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Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee K. Clarke, John T. R. Liddon, James D. Cuthbertson, Richard J. K. Taylor and William P. Unsworth Department of Chemistry, University of York, Heslington, York, YO10 3DD, U.K. Table of Contents Page Full optimisation table for spirocyclic dienone formation (Table S1) 2 HPLC data 3 1 H and 13 C NMR spectra 451 Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry. This journal is © The Royal Society of Chemistry 2016

Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

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Page 1: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

Supporting Information

Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of

Alkynes

Aimee K. Clarke, John T. R. Liddon, James D. Cuthbertson, Richard J. K. Taylor and

William P. Unsworth

Department of Chemistry, University of York, Heslington, York, YO10 3DD, U.K.

Table of Contents Page

Full optimisation table for spirocyclic dienone formation (Table S1) 2

HPLC data 3

1H and

13C NMR spectra 4–51

Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry.This journal is © The Royal Society of Chemistry 2016

Page 2: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

Table S1. Full optimisation of acid-catalysed ynone spirocyclisation

En

try

Yn

on

e

Catalyst Equiv/

Time [h]/ Temp [°C]

Conversion[a],[b]

(isolated yield in brackets)

1 9a SnCl2.2H2O 5/20/RT No Reaction

2 9a SnCl2.2H2O 5/20/45 No Reaction

3 9b SnCl2.2H2O 5/20/RT No Reaction

4 9b SnCl2.2H2O 5/20/45 No Reaction

5 9c SnCl2.2H2O 5/20/RT No Reaction

6 9c SnCl2.2H2O 5/20/45 10%

7 9d SnCl2.2H2O 5/20/RT 75% (57%)

8 9d SnCl2.2H2O H2O (50

eq.)

5/20/RT No Reaction

9 9d Dry SnCl2 5/20/RT 10%

10 9d SnCl2.2H2O 1/20/RT 65%

11 9d SnCl2.2H2O 0.1/72/RT 30%

12 9d Yb(OTf)2 1/20/RT No Reaction

13 9d Au(PPh3)Cl 1/20/RT No Reaction

14 9d Formic acid 1/20/RT No Reaction

15 9d Zn(OTf)2 1/20/RT No Reaction

16 9d ZnCl2 1/20/RT No Reaction

17 9d PdCl2(PPh3)2 1/20/RT No Reaction

18 9d Sc(OTf)3 1/20/RT 25%

9 9d SnCl4 1/20/RT 1:1 9d:10d mixture (with

impurities)

20 9d TFA 1/20/RT 3:1 9d:10d mixture (with

impurities)

21 9d BF3.OEt2 1/20/RT 1:9 9d:10d mixture (with

impurities)

22 9d c. HCl aq. 1/4/RT Complex mixture

23 9d TfOH 1/1/RT Complex mixture

24 9d p-TSA.H2O 1/20/RT Complex mixture

25 9d Au(PPh3)Cl and AgOTf 1/1/RT Complex mixture

26 9d AgOTf 1/20/RT 10%

27 9d AuCl3.H2O 1/0.25/RT Complex mixture

28 9d Cu(OTf)2 1/1/RT >95% (80%)

[a] All reactions performed on 0.09–0.2 mmol of ynone in CH2Cl2 (0.1M); [b] Conversion measured

from crude 1H NMR spectra.

Page 3: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

CSP-HPLC of 12t using Chiralpak ID column, eluting with 20% IPA in hexanes.

1. Racemic 12t recorded at 280 nm

Peak

No.

Retention

Time / min

Peak

Area

Peak

Area / %

1 77.3 2726 50.2

2 87.5 2696 49.7

2. (+)12t recorded at 280 nm

Peak

No.

Retention

Time / min

Peak

Area

Peak

Area / %

1 72.8 47799 38.4

2 82.6 76541 61.6

Page 4: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

j2793jdo_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.003.632.001.012.152.142.06

j2795jdo_CARBON-1.jdf

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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j2859wpu_PROTON-1.jdf

7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

Norm

alized Inte

nsity

2.006.055.142.002.00

j2860wpu_CARBON-1.jdf

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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j4382jdc_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

5.172.001.001.960.980.94

j4381jdc_CARBON-1.jdf

190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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j5192wpu_PROTON-1.jdf

7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.012.932.001.011.800.95

j5191wpu_CARBON-1.jdf

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

Norm

alized Inte

nsity

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j5152jdc_PROTON-1.jdf

8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

3.001.001.033.253.243.330.932.142.22

j5151jdc_CARBON-1.jdf

170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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j4683wpu_PROTON-1.jdf

7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.870.860.911.006.083.942.301.83

j4684wpu_CARBON-1.jdf

180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

Norm

alized Inte

nsity

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j4784wpu_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.601.020.920.913.252.943.191.162.06

j4785wpu_CARBON-1.jdf

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

0.65

0.70

Norm

alized Inte

nsity

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j4309jdc_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.9411.322.000.97

j4308jdc_CARBON-1.jdf

170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

Norm

alized Inte

nsity

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j4886jdc_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

11.001.961.880.941.83

j4885jdc_CARBON-1.jdf

180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

0.65

0.70

Norm

alized Inte

nsity

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j4781wpu_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

0.960.973.032.981.000.961.971.961.94

j4782wpu_CARBON-1.jdf

200 180 160 140 120 100 80 60 40

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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j4958wpu_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

11.242.001.932.110.97

j4959wpu_CARBON-1.jdf

180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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j4984jdc_PROTON-1.jdf

7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.006.434.152.961.18

j4983jdc_CARBON-1.jdf

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Norm

alized Inte

nsity

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j5735jdc_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

5.001.906.75

j5734jdc_CARBON-1.jdf

190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30

Chemical Shift (ppm)

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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j5394jdc_PROTON-1.jdf

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.040.992.002.045.05

j5393jdc_CARBON-1.jdf

200 180 160 140 120 100 80 60 40

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

Norm

alized Inte

nsity

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j5038wpu_PROTON-1.jdf

8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

3.976.144.001.911.89

j5039wpu_CARBON-1.jdf

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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j5050jdc_PROTON-1.jdf

7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

1.931.993.151.012.012.061.992.00

j5048jdc_CARBON-1.jdf

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

0.65

0.70

Norm

alized Inte

nsity

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j6528wpu_PROTON-1.jdf

8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

6.012.002.142.434.161.020.95

j6718wpu_CARBON-1.jdf

180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

Norm

alized Inte

nsity

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j5655wpu_PROTON-1.jdf

9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

3.001.914.813.051.910.87

j5656wpu_CARBON-1.jdf

190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30

Chemical Shift (ppm)

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

Norm

alized Inte

nsity

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P2758AKC_PROTON-1-1.JDF

10 9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

3.005.062.112.11

P2758AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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P2561AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.000.921.951.951.963.00

P2561AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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N7474AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.002.051.112.232.301.182.14

N7525AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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P8766AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

5.001.024.001.941.94

P8780AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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P6965AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

3.002.982.083.081.170.992.05

P6973AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

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R0328AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

4.822.960.890.983.871.99

R0328AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 28: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R0751AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.002.973.020.990.980.971.991.032.00

R0751AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 29: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R4235AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

3.032.082.062.032.000.932.001.98

R4235AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 30: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

P9943AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

3.672.892.311.991.950.961.942.00

P9974AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 31: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R4428AKC_PROTON-1-1.JDF

8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

9.001.992.791.911.952.651.97

R4566AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 32: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R4567AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

10.292.112.133.282.181.002.082.11

R4567AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 33: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

448 V6-9 PROTON (1).ESP

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

6.0010.742.104.352.172.20

448 V6-9 CARBON (1).ESP

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 34: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

450 V7-9 PROTON.ESP

9 8 7 6 5 4 3 2 1 0 -1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

5.869.292.062.072.081.061.972.00

450 V7-9 CARBON.ESP

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 35: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R3682AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

1.981.930.932.030.952.002.01

R3696AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 36: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R3698AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.031.951.352.000.951.952.00

R3698AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 37: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R4621AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

6.092.200.952.050.952.012.00

R4658AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 38: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R4699AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.012.322.232.110.972.000.971.962.00

R4703AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 39: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

P6857AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

3.033.132.001.051.021.041.050.97

P6857AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 40: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R3944AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.051.890.802.000.941.880.950.95

R3944AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 41: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R3996AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.072.071.141.000.980.941.910.971.04

R3996AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 42: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

P8627AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.000.941.961.962.030.822.18

P8686AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 43: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R4464AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

1.031.000.991.990.986.33

P8970AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 44: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R0325AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.991.970.933.911.901.96

R0325AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 45: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R0731AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

1.000.973.130.971.981.012.103.31

R0749AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 46: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R0326AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

2.000.962.092.031.992.01

R0326AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 47: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R0750AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

1.000.990.972.000.991.993.12

R0750AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 48: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R4928AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

9.232.000.961.984.861.030.981.05

R4928AKC_CARBON-1-1.JDF

180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 49: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R5000AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

8.842.002.020.992.152.261.051.001.00

R5000AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 50: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

R5903AKC_PROTON-1-1.JDF

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

4.072.204.441.091.091.001.061.06

R5903AKC_CARBON-1-1.JDF

200 180 160 140 120 100 80 60 40 20 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

Page 51: Supporting Information Dearomatisation approaches to ... · Supporting Information Dearomatisation approaches to Spirocyclic Dienones via the Electrophilic Activation of Alkynes Aimee

455 V9-13 PROTON.ESP

9 8 7 6 5 4 3 2 1 0

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity

1.001.044.131.061.041.051.911.00

455 V9-13 CARBON.ESP

200 180 160 140 120 100 80 60 40 20

Chemical Shift (ppm)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Norm

alized Inte

nsity