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Synthesis of Tetrahydrobenzo[b] Pyran Derivatives using Sodium Trifluoromethane Sulphonate as an Efficient Catalyst

A. Shekhar, D. Dey and D. Deo Pathak

An efficient and convenient approach to the synthesis of 2-amino-3-cyano-4-aryl-7,7-dimethyl-5- oxo-4H-5,6,7,8-tetrahydrobenzo[b]pyran derivatives using sodium trifluoromethanesulphonate as a catalyst is described. This method provides several advantages such as neutral conditions, high yields and simple work procedure.