919770-42-6Relevant articles and documents
Direct catalytic asymmetric Mannich-type reactions of γ-butenolides: Effectiveness of Bronsted acid in chiral metal catalysis
Yamaguchi, Akitake,Matsunaga, Shigeki,Shibasaki, Masakatsu
supporting information; scheme or table, p. 2319 - 2322 (2009/05/26)
(Chemical Equation Presented) Direct catalytic asymmetric Mannich-type reactions of γ-butenolides are described. A chiral Lewis acid/amine base/Bronsted acid combination was used to catalyze a γ-addition of γ-butenolides to N-diphenylphosphinoyl imines, a