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Synthesis of fused pyrimidines with N-, S-heterocyclic moieties by double-annelation reaction

✍ Scribed by A. Z. M. Shaifullah Chowdhury; Yasuyuki Shibata

Publisher: Journal of Heterocyclic Chemistry
Year: 2001
Tongue: English
Weight: 48 KB
Volume: 38
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570380333

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✦ Synopsis

Abstract

A variety of tri‐ and tetracyclic hetero systems were obtained by reaction of heteroaromatic ortho‐aminoesters or ortho‐aminonitriles with iminothioether, yielding double‐annelation of a thiazolo[3,2‐a]‐pyrimidine, pyrimido[2,l‐b]thiazine, imidazo[1,2‐a]pyrimidine, and pyrimido[1,2‐a]pyrimidine moieties in a one‐pot process.

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