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■ The Introduction of Methoxy Group to the Aromatic Ring of Heteroaromatic Systems; A Model Study for the Introduction of Methoxy Group to the 5-Position of 3,3-Disubstituted Indoline Alkaloids

Takeshi Oishi,* Mineo Fukui, and Yumiko Endo

*The Institute of Physical and Chemical Research, Wako-shi, Saitama 351-0198, Japan

Abstract

Introduction of methoxy group to the 5-position of 3,3-disubstituted indoline derivative was achieved by the substitution of chlorine of the corresponding 5-chloroindoline with methoxy group, substitution being assisted by chromium tricarbonyl complex formation and by the use of “naked” methoxide anion.