Convenient Synthesis of N,N′‐bis‐protected‐3,3′‐diiodo‐2,2′‐biindoles

Abstract

A convenient synthesis of N,N′‐bis‐protected 3,3′‐diiodo‐2,2′‐biindoles 4–7 from 2,2′‐biindole (1) is described.

Keywords:

• 2,2′‐Biindole
• 3,3′‐diiodo‐2,2′‐biindoles
• iodination

Acknowledgments

This investigation was supported in part by the donors of the Petroleum Research Fund (PRF), administered by the American Chemical Society, and Wyeth. We thank Dr. Tomasz Janosik for the preparation of 2,2′‐biindole.