Molecular Iodine: An Efficient Catalyst for the Synthesis of Tetrahydrobenzo[b]pyrans

Abstract

An iodine/DMSO system is introduced as an excellent catalyst in three‐component coupling reactions of tetrahydrobenzo[b]pyran synthesis. The reaction proceeds quickly under very mild reaction conditions.

Keywords:

• aldehydes
• malononitrile
• molecular iodine
• tetrahydrobenzo[b]pyran

Acknowledgment

The authors are thankful to W. N. Jadhav, Head of the Chemistry Department, Dnyanopasak College, Parbhani, India, for his valuable guidance.