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A cyclopropenone route to new pyrrolizidine derivatives

✍ Scribed by Albert Kascheres; Heloisa C. Schumacher; Reinaldo A. F. Rodrigues

Publisher
Journal of Heterocyclic Chemistry
Year
1997
Tongue
English
Weight
177 KB
Volume
34
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

New pyrrolizidine derivatives 6 and 7 were prepared from the 1, 5‐dihydro‐2__H__‐pyrrol‐2‐one 3a via an acidic intramolecular aldol condensation in 16% and 42% yields, respectively. Compound 6 was obtained by dehydration of 7 with p‐toluenessulfonic acid in 67% yield.

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