The present disclosure relates to a novel, highly efficient and enantiospecific borylation method to synthesize a wide range of enantiopure alfa-amino tertiary boronic esters, and novel alfa-amino tertiary boronic acids and esters prepared by the method. More specifically, highly enantiospecific borylation of configurationally stable α-N-Boc substituted tertiary organolithium species and HBpin has been developed to synthesize various alfa-amino tertiary boronic esters through the formation of a new C—B bond with excellent enantiopurities.
The present disclosure relates to a novel, highly efficient and enantiospecific borylation method to synthesize a wide range of enantiopure alfa-amino tertiary boronic esters, and novel alfa-amino tertiary boronic acids and esters prepared by the method. More specifically, highly enantiospecific borylation of configurationally stable α-N-Boc substituted tertiary organolithium species and HBpin has been developed to synthesize various alfa-amino tertiary boronic esters through the formation of a new C—B bond with excellent enantiopurities.
range of enantiopure (>99 % ee) α‐aminotertiary boronic esters. The configurationally stable α‐N‐Boc substituted tertiary organolithium species and pinacolborane (HBpin) underwent enantiospecific borylation at −78 °C with the formation of a new stereogenic C−B bond. This reaction has a broad scope, enabling the synthesis of various α‐aminotertiary boronic esters in excellent yields and, importantly