Regioselective Alkylation Method of Heterocyclic N-Oxides Using 1,1-Alkyl Diboron Compounds

Transition-Metal-Free Regioselective Alkylation Technology for Heterocyclic N-Oxides

This technology relates to an organic synthesis method for regioselectively alkylating heterocyclic N-oxides by using 1,1-alkyl diboron compounds.

Conventional alkylation reactions have faced issues such as the cost and inefficiency of transition-metal catalysts and difficulty separating isomers in radical pathways. This technology reacts a heterocyclic N-oxide with a 1,1-alkyl diboron compound in the presence of a base to realize selective alkylation without a catalyst.

As a result, it can reduce process cost and separation burden while improving alkylation efficiency at the desired position, making it useful in pharmaceutical and fine-chemical synthesis.

Key Features:

• It reacts heterocyclic N-oxides using 1,1-alkyl diboron compounds and a base.
• It realizes regioselective alkylation without a transition-metal catalyst.
• It improves synthetic efficiency and economics by reducing the burden of structural-isomer separation.