Reaction of Resorcinol with Mesityl Oxide: Synthesis of 2,2-Dimethyl-4-formyl- 7-methoxy-(2H)-1-benzopyran

Abstract

Synthesis of 2,2-dimethyl-4-formyl-7-methoxy-(2H)-1-benzopyran has been achieved by a three step reaction sequence, wherein the key step has been the preparation of 7-hydroxy-2,2,4-trimethyl-(2H)-1-benzopyran by a novel condensation reaction between resorcinol and mesityl oxide in presence of polyphosphoric acid (PPA).

^#R.R.L. (Jammu) communication no. 2348

Keywords:

• Resorcinol
• Mesityl oxide
• Polyphosphoric acid
• 2,2-dimethyl-4-formyl-7-methoxy-(2H)-1-benzopyran

Acknowledgment

We are thankful to the Director RRL(J) for financial support and the instrumentation section for spectral data.

Notes

^#R.R.L. (Jammu) communication no. 2348