1016669-67-2Relevant articles and documents
A new sparteine surrogate for asymmetric deprotonation of N-Boc pyrrolidine
Stead, Darren,O'Brien, Peter,Sanderson, Adam
supporting information; experimental part, p. 1409 - 1412 (2009/04/12)
(Chemical Equation Presented) The s-BuLi complex of a cyclohexane-derived diamine is as efficient as s-BuLi/(-)-sparteine for the asymmetric deprotonation of N-Boc pyrrolidine. This is the first example of high enantioselectivity using a non-sparteine-like diamine in such reactions. The ( S, S)-diamine is a useful (+)-sparteine surrogate and was utilized in short syntheses of (-)-indolizidine 167B and an intermediate for the synthesis of the CCK antagonist (+)-RP 66803.