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Polyphenylalkane derivativesQ 0720 Catalytic Enantioselective Reformatsky Reaction with ortho-Substituted Di-

arylketones. — The addition of 20 mol% Ph3PO is crucial for high enantioselectivities. para- and meta-Substituted diarylketones provide racemic carbinols. Only the combi-nation of the para- and ortho-substituted aryl-groups [cf. (VI)] is effective albeit with moderate yields. — (FERNANDEZ-IBANEZ, M. A.; MACIA, B.; MINNAARD, A. J.; FRINGA*, B. L.; Org. Lett. 10 (2008) 18, 4041-4044; Stratingh Inst. Chem., Univ. Groningen, NL-9747 AG Groningen, Neth.; Eng.) — R. Steudel

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