An improved method of oxazolidinone hydrolysis in the asymmetric synthesis of α-alkylprolines
摘要:
An improvement in Seebach's method for the synthesis of alpha-alkylprolines is reported wherein the hydrolysis of the chiral oxazolidinone 2 is performed on a suspension of silica gel in MeOH/H2O. Following hydrolysis, the pure alpha-alkylproline can he obtained by filtration thereby avoiding a tedious ion exchange purification.