Nitrogen extrusion from pyrazoline-substituted porphyrins and chlorins using long wavelength visible light

Chem Commun (Camb). 2002 Nov 21:(22):2622-3. doi: 10.1039/b208368j.

Abstract

Protoporphyrin reacts with diazomethane to give pyrazolines which at long wavelength (approximately 630 nm) extrude nitrogen to give the corresponding cyclopropyl derivatives.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cross-Linking Reagents / chemical synthesis
  • Cross-Linking Reagents / chemistry
  • Light*
  • Nitrogen / chemistry*
  • Photochemotherapy
  • Photosensitizing Agents / chemical synthesis
  • Photosensitizing Agents / chemistry
  • Porphyrins / chemical synthesis
  • Porphyrins / chemistry*
  • Pyrazoles / chemical synthesis
  • Pyrazoles / chemistry*

Substances

  • Cross-Linking Reagents
  • Photosensitizing Agents
  • Porphyrins
  • Pyrazoles
  • chlorin
  • Nitrogen