Diastereodivergent Access to <i>Syn</i> and <i>Anti</i> 3,4-Substituted β-Fluoropyrrolidines: Enhancing or Reversing Substrate Preference
作者:Kasper Fjelbye、Mauro Marigo、Rasmus Prætorius Clausen、Karsten Juhl
DOI:10.1021/acs.orglett.6b00293
日期:2016.3.4
A practical diastereodivergent access to beta-fluoropyrrolidines with two adjacent stereocenters has been demonstrated, by either enhancing or completely reversing the substrate control, in the diastereoselective fluorination of a series of diverse pyrrolidinyl carbaldehydes using organocatalysis. Furthermore, enamine catalysis has been successfully utilized for kinetic resolution, obtaining a fluorinated beta-prolinol analogue with two adjacent tetrasubstituted chiral centers in 95% ee from a racemic substrate.