✦ LIBER ✦

The mechanism of formation of 3H,9H-Pyrano[3,4-b]indol-3-ones from 3-indolalkanoic acids

✍ Scribed by Medio-Simon, Mercedes ;Erfanian-Abdoust, Houshang ;Pindur, Ulf

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 186 KB
Volume: 1991
Category: Article
ISSN: 0947-3440
DOI: 10.1002/jlac.1991199101110

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✦ Synopsis

Abstract

The mechanism of the formation of 1‐methyl‐3__H__,9__H__‐pyrano[3,4‐b]indol‐3‐one (4) from the corresponding 3‐indolacetic acid 1 is discussed. The suggested mechanism is substantiated by the isolation of a stable intermediate 2 and its transformations in the presence of acetic anhydride and/or Lewis acids.

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