930299-14-2Relevant articles and documents
Asymmetric synthesis of anti- and syn-2,3-diamino esters using sulfinimines. Water and concentration effects
Davis, Franklin A.,Zhang, Yanfeng,Qiu, Hui
, p. 833 - 836 (2007/10/03)
(Chemical Equation Presented) In the absence of water, an excess of the lithium enolate of N-(diphenylmethylene)glycine ethyl ester (4) adds to sulfinimines to give syn-2,3-diamino esters 6, and in the presence of water, this enolate gives the anti-2,3-diamino esters 5. These unusual results are interpreted in terms of those factors that inhibit the retro-Mannich fragmentation in the diamino esters.