Synthesis and Functionalization of Challenging meso-Substituted Aryl Bis-pocket Porphyrins Accessed via Suzuki-Miyaura Cross-Coupling

J Org Chem. 2022 Sep 2;87(17):11783-11795. doi: 10.1021/acs.joc.2c01538. Epub 2022 Aug 17.

Abstract

Herein we report an investigation into the synthesis, metalation, and functionalization of bis-pocket porphyrins using the Suzuki-Miyaura cross-coupling reaction. Steric limitations to accessing bis-pocket porphyrins were overcome by using this Pd-catalyzed C-C-bond-forming strategy to introduce steric bulk after macrocyclization: 2,6-dibromo-4-trimethylsilybenzaldehyde was condensed with pyrrole, and a variety of boronic acids were coupled to the resulting porphyrin in up to 95% yield. Furthermore, we show that these porphyrins can be metalated with a variety of metals and sulfonated to create water-soluble bis-pocket porphyrins.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Boronic Acids
  • Porphyrins*
  • Pyrroles
  • Water

Substances

  • Boronic Acids
  • Porphyrins
  • Pyrroles
  • Water