2003 Polyphenylalkane derivatives

200348.fm Page 98 Friday, October 31, 2003 2:17 PM

Polyphenylalkane derivativesQ 0720 Truly Catalytic and Enantioselective Pinacol Coupling of Aryl Aldehydes Medi-

ated by Chiral Ti(III) Complexes. — The complex TCS, generated from Ti(O-iPr)4, SAL, and TmsCl, is found to be an efficient catalyst for the enantioselective pinacol coupling of aryl aldehydes. Solvent and temperature as well as the nature of ligand strongly effect the reaction outcome. — (CHATTERJEE, A.; BENNUR, T. H.; JOSHI*, N. N.; J. Org. Chem. 68 (2003) 14, 5668-5671; Div. Org. Chem., Natl. Chem. Lab., Pune 411 008, India; Eng.) — Jannicke

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