Synthesis of some ytterbium (III) tris-(perfluoroalkylsulfonyl) methides
…, N Bouloc, DC Braddock, D Catterick, D Chadwick…
Index: Barrett, Anthony G.M.; Bouloc, Nathalie; Christopher Braddock; Catterick, David; Chadwick, David; White, Andrew J.P.; Williams, David J. Tetrahedron, 2002 , vol. 58, # 20 p. 3835 - 3840
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Citation Number: 17
Abstract
Lanthanide(III) triflates and related species have enjoyed recent attention as catalysts for a wide range of reactions in organic synthesis. 1. and 2. The interest stems from their apparent ability to function as strong Lewis acids even in Lewis basic solvents such as THF and water, and by their relatively high turnover numbers compared to traditional Lewis acids. 3 For instance, ytterbium(III) triflate was found to catalyze the Mukaiyama aldol reaction of silylketene ...