A <i>syn</i>‐Selective Aza‐Aldol Reaction of Boron Aza‐Enolates Generated from <i>N</i>‐Sulfonyl‐1,2,3‐Triazoles and 9‐BBN‐H

Abstract

A syn-selective aza-aldol reaction of boron aza-enolates, generated from N-sulfonyl-1,2,3-triazoles and 9-BBN-H, is reported. It provides a sequential one-pot procedure for the stereoselective construction of 1,3-amino alcohols, having contiguous stereocenters, starting from terminal alkynes.