One-Pot Synthesis of π-Extended Fluorenone-Fused Subphthalocyanines

Org Lett. 2019 Apr 19;21(8):2908-2912. doi: 10.1021/acs.orglett.9b00944. Epub 2019 Apr 8.

Abstract

A family of inherently chiral nonplanar aromatic chromophores, comprising Subphthalocyanines bearing fluorenone-fused units (SubFcs), have been prepared by an innovative one-pot synthesis, which relies on the standard cross-cyclotrimerization of phthalonitriles followed by intramolecular Friedel-Crafts acylation. Their Q-band absorption experiences a ca. 20 nm red shift per fused fluorenone as a consequence of the enlarged conjugated π-system.

Publication types

  • Research Support, Non-U.S. Gov't