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Reactions of α-diazoketones with indolinone imines: Synthesis of new 1,3,3-triaryl-1′-methylspiro[azetidine-2,3′-indoline]-2′,4-diones

✍ Scribed by Girija S. Singh; Boycie J. Mmolotsi

Book ID
102338232
Publisher
Journal of Heterocyclic Chemistry
Year
2006
Tongue
English
Weight
196 KB
Volume
43
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

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The paper describes the synthesis of new 1,3,3‐triary‐1′‐methylspiro[azetidine‐2,3′‐indoline]‐2′,4‐diones from reaction of the 2‐diazo‐1,2‐diarylethanones with 3‐arylimino‐1‐methyl‐2‐indolinones. The compounds have been characterized by satisfactory analytical and spectral (IR, ^1^H NMR and ^13^C NMR) data. The diarylketenes, generated in situ from thermal decomposition of the 2‐diazo‐1,2‐diarylethanones, react with azomethine linkage in preference to carbonyl group leading to the formation of products.

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