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New synthetic approaches to bridgehead nitrogen heterocycles. Derived from 3-amino-2,3-dihydro-5,6-dimethyl-2-thioxothieno[2,3-d]pyrimidin-4(1H)-one and its salts

✍ Scribed by Andrea Santagati; Maria Modica; Maria Santagati

Publisher: Journal of Heterocyclic Chemistry
Year: 2000
Tongue: English
Weight: 260 KB
Volume: 37
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570370523

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✦ Synopsis

Abstract

Bridgehead nitrogen heterocycles 3a, b and 6a, b containing the thieno‐pyrimidine system have been prepared from the versatile intermediates 3‐amino‐2,3‐dihydro‐5,6‐dimethyl‐2‐thioxo‐thieno[2,3‐d]pyrimidin‐4‐(1__H__)‐one 1 and its hydrazinium or potassium salts 4; their structural elucidation is also reported.

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