Efficient and Versatile Single‐Pot Alternative Approach to Dipyrromethanes

Abstract

A convenient procedure for the synthesis of meso‐substituted dipyrromethanes and 5,10‐disubstituted tripyrranes is described. Different aryl groups appended with electron donating/withdrawing substituents as well as alkyl groups have been incorporated at the methylene bridge (C‐5).

Keywords:

• Carbonyl equivalents
• dipyrromethanes
• tetra‐meso‐arylporphyrins
• 5,10‐tripyrranes
• oxazinanes

Acknowledgments

The authors are grateful to Council of Scientific & Industrial Research [CSIR, 1(1653)/00/EMR‐II], New Delhi, India, for financial support.

Notes

*Incorporated by using 2‐cyanomethyl‐4,4,6‐trimethyloxazolidine.