Reaktionen mesoionischer Fünfringheterocyclen mit o-chinoiden Verbindungen, IV [1]. Mono- und tricyclische 1.3-Thiazolium-4-olate, 1.3-Dithiolylium-4-olate / Reactions of Mesoionic Five-Membered Heterocycles with o-Quinonoid Compounds, IV [1]. Mono- and Tricyclic 1,3-Thiazolium-4-olates, 1,3-Dithiolylium-4-olates
Open Access
- 1 May 1981
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 36 (5) , 609-621
- https://doi.org/10.1515/znb-1981-0514
Abstract
Monocyclic 1,3thiazolium-4-olates (10) react with o-quinonoid compounds to give [π4 + π4] cycloadducts (12, 13); tricyclic 1,3-thiazolium-4-olates (14, 15) yield compounds (17, 18, 19, 20) which can formally be derived from a ketene tautomer (C). 1,3-Dithiolylium-4-olates are borderline cases; both [π4+ π2] (32) and [π4 + π4] adducts (34) were obtainedKeywords
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