Access to Seleno‐Functionalized Thiazolo[3,2‐a]Pyrimidinones and Pyrimido[2,1‐b][1,3]Thiazinones via Selenocyclization of 2‐Alkenylthiopyrimidinones and Their Fused Analogs
Alla Vaskevych,
Svitlana Shishkina,
Maryna Dekhtyar
et al.
Abstract:The methodology of electrophilic selenylation/cyclization of 2‐alkenylthiopyrimidinones and their fused analogs underlies most of the reported synthetic approaches to seleno‐functionalized thiazolo[3,2‐a]pyrimidinones and pyrimido[2,1‐b][1,3]thiazinones. We have developed a novel implementation of this strategy using as reagent phenylselenyl chloride or the visible‐light‐induced radical‐generating (PhSe)2/CBr4 system. The effect of the unsaturated substrate structure and reaction conditions on the selenocycliz… Show more
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