Corrole and nucleophilic aromatic substitution are not incompatible: a novel route to 2,3-difunctionalized copper corrolates

Org Biomol Chem. 2015 Jun 21;13(23):6611-8. doi: 10.1039/c5ob00659g. Epub 2015 May 19.

Abstract

The insertion of a -NO2 group onto the corrole framework represents a key step for subsequent synthetic manipulation of the macrocycle based on the chemical versatility of such a functionality. Here we report results of the investigation of a copper 3-NO2-triarylcorrolate in nucleophilic aromatic substitution reactions with "active" methylene carbanions, namely diethyl malonate and diethyl 2-chloromalonate. Although similar reactions on nitroporphyrins afford chlorin derivatives, nucleophilic attack on carbon-2 of corrole produces 2,3-difunctionalized Cu corrolates in acceptable yields (ca. 30%), evidencing once again the erratic chemistry of this contracted porphyrinoid.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chemistry Techniques, Synthetic
  • Copper / chemistry*
  • Crystallography, X-Ray
  • Magnetic Resonance Spectroscopy
  • Malonates / chemistry
  • Molecular Structure
  • Organometallic Compounds / chemistry
  • Porphyrins / chemistry*
  • Pyrroles / chemistry
  • Spectrophotometry, Ultraviolet

Substances

  • Malonates
  • Organometallic Compounds
  • Porphyrins
  • Pyrroles
  • corrole
  • chlorin
  • diethyl malonate
  • Copper