Direct C-H borylation of vinylporphyrins via copper catalysis

Org Biomol Chem. 2022 Mar 2;20(9):1926-1932. doi: 10.1039/d1ob02005f.

Abstract

A method of direct borylation of vinyl-substituted porphyrinoids (porphyrins and chlorins) has been developed based on the copper catalyzed vinylic C-H activation. Ni(II) complexes of meso- and β-vinylporphyrinoids have been transformed to the corresponding pinacolboronated derivatives with good yields and high (E)-stereoselectivity. The method provides an easy and direct access to the valuable synthons which were shown to act as nucleophylic partners in the Suzuki cross-coupling building tetrapyrrole derivatives with π-conjugation through the carbon-carbon double bond.

Publication types

  • Research Support, Non-U.S. Gov't