Michael addition reactions between various nucleophilic glycine equivalents and (S,E)-1-enoyl-5-oxo-N-phenylpyrrolidine-2-carboxamide, an optimal type of chiral Michael acceptor in the asymmetric synthesis of β-phenyl pyroglutamic acid and related compounds
作者:Trevor K. Ellis、Hisanori Ueki、Rohit Tiwari、Vadim A. Soloshonok
DOI:10.1016/j.tetasy.2009.10.006
日期:2009.11
an optimal type of chiral Michael acceptor for reactions with a series of nucleophilic glycine equivalents. A study of the corresponding Michaeladdition reactions revealed that the new generation of modular glycine derivatives, as a counterpart to the Michael acceptor, provides for operationally convenient preparation of β-phenyl pyroglutamic acids and relatedcompounds with virtually complete chemical
Synthesis of (2S,3S)-β-(trifluoromethyl)-α,β-diamino acid by Mannich addition of glycine Schiff base Ni(II) complexes to N-tert-butylsulfinyl-3,3,3-trifluoroacetaldimine
作者:Akie Kawamura、Hiroki Moriwaki、Gerd-Volker Röschenthaler、Kosuke Kawada、José Luis Aceña、Vadim A. Soloshonok
DOI:10.1016/j.jfluchem.2014.09.013
日期:2015.3
yl)-α,β-diamino acid is reported by using highly diastereoselective Mannich addition reactions of either chiral or achiral Ni(II) complexes derived from glycine Schiff bases to a chiralsulfinimine, N-tert-butylsulfinyl-3,3,3-trifluoroacetaldimine. Disassembly of the resultant Ni(II) complexes affords the target amino acid which was, for the first time, isolated in enantiomerically pure form and fully
New generation of nucleophilic glycine equivalents
作者:Trevor K. Ellis、Hisanori Ueki、Vadim A. Soloshonok
DOI:10.1016/j.tetlet.2004.12.050
日期:2005.2
A new generation of nucleophilic glycine equivalents, designed to contain a functional framework, that allows control over the physical properties as well as the reactivity, is described. The reactivity of these nucleophilic glycine equivalents have been compared to previously described examples with the application of various transformations such as alkyl halide alkylations, Michael additions, and aldol condensations. (C) 2004 Elsevier Ltd. All rights reserved.