Stereospecific Reduction with Retention of Chiral Fluoral-derived 1,3-Oxazolidines with LiAlH<sub>4</sub>: Asymmetric Synthesis of 1-Substituted 2,2,2-Trifluoroethylamines
The asymmetricsynthesis of 1-substituted 2,2,2-trifluoroethylamines from chiral 1,3-oxazolidines having trifluoromethyl group derived from trifluoromethylketones and (R)-phenylglycinol is described. The stereospecific reduction of chiral 1,3-oxazolidines with LiAlH4 proceeds in retention fashion.
Stereocontrol at the quaternary center in 1-substituted 1-phenyl-2,2,2-trifluoroethylamines: stereospecific substitution with retention of a chiral cyclic fluoral N,O-acetal with organolithium reagents
The asymmetric synthesis of 1-substituted 1-phenyl-2,2,2-trifluoroethylamines from chiral 1,3-oxazolidines is described. The stereospecific substitution reaction with organolithiumreagents of chiral 1,3-oxazolidines having a trifluoromethyl group proceeds with retention to control the newly created quaternary center.