A Novel Carbocationic Species Paired with Tetrakis (pentafluorophenyl) borate Anion in Catalytic Aldol Reaction.

T Mukaiyama, M Yanagisawa, D Iida, I Hachiya

Index: Mukaiyama, Teruaki; Yanagisawa, Manabu; Iida, Daisuke; Hachiya, Iwao Chemistry Letters, 2000 , # 6 p. 606 - 607

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Citation Number: 13

Abstract

The reaction of silyl enol ethers which are stable and isolable carbon nucleophiles with activated carbonyl com- pounds is one of the most versatile synthetic tools for the car- bon-carbon bond formation.1 Although Lewis acids such as TiCl4, SnCl4, BF3·OEt2, etc. are frequently employed in these reactions as useful promoters, it is still strongly desired to explore a new and effective catalyst which accelerates the reac- tions under essentially neutral conditions. Previously, ...