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 chiral sulfinimine, 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
据报道,使用甘氨酸席夫碱衍生的手性或非手性Ni(II)配合物的非对映选择性曼尼希加成反应,可方便地获得(2 S,3 S)-β-(三氟甲基)-α,β-二氨基酸。手性亚磺酰亚胺,ñ -叔丁基亚-3,3,3- trifluoroacetaldimine。分解所得的Ni(II)配合物可得到目标氨基酸,该氨基酸首次以对映体纯形式分离并得到充分表征。