Studies on Amine Oxide Rearrangement: Synthesis of Pyrrolo[3,2‐c][1]benzothiopyran‐4‐one

Abstract

A methodology, based on tandem [2,3] and [3,3] sigmatropic rearrangement, has been described for the synthesis of hitherto unreported, potentially bioactive pyrrolo[3,2‐c][1]benzothiopyran‐4‐ones (6a–g) derivatives.

Keywords:

• m‐chloroperoxybenzoic acid
• pyrrolo[3,2‐c][1]benzothiopyran‐4‐ones
• [2,3] and [3,3] sigmatropic rearrangement

Acknowledgment

We thanks Council of Scientific and Industrial Research (CSIR) (New Delhi) for financial assistance. One of us (S. K. C.) is grateful to CSIR for a senior research fellowship. We also thank Department of Science and Technology (DST) (New Delhi) for awarding UV‐VIS and FT‐IR instruments under the Financial Assistance for Infrastructural Development of Science and Technology (FIST) program.