A Method for the Deprotection of Alkylpinacolyl Boronate Esters
摘要:
A two-step procedure for deprotection of alkylpinacolyl boronate esters via transesterification with diethanolamine followed by hydrolysis was successfully developed with the advantages of tolerance to various functional groups, short reaction time, and ease of product isolation.
Abstractmagnified imageAn efficient copper catalyst system for the β‐boration of α,β‐unsaturated amides has been developed. Copper‐bisphosphine complexes with small bite angles generate efficient catalyst systems for the successful conjugate addition of bis(pinacolato)diboron to a variety α,β‐unsaturated amides under mild conditions. This method was utilized in the formal synthesis of (S)‐fluoxetine.