Multigram-scale synthesis of enantiopure 3,3-difluoroproline
作者:Christelle Doebelin、Yuanjun He、Theodore M. Kamenecka
DOI:10.1016/j.tetlet.2016.11.012
日期:2016.12
An efficient route for the synthesis of enantiopure 3,3-difluoroproline on multigram-scale is described herein. The deoxofluorination can be achieved with DAST on the corresponding racemic pyrrolidinone in good yield. Resolution of the racemate by crystallization with D- and L-tyrosine hydrazide provides both enantiomers of 3,3-difluoroproline in high yield and ee%.