Synthesis of Heterocyclic Systems by the Reaction of Zwitterionic Compounds with Isocyanates and Thiophosgene
作者:Barbara Zaleska、Marcin Karelus
DOI:10.1055/s-2002-34866
日期:——
The reaction of various isocyanates or thiophosgene with zwitterionic pyrimidinylium and 1,3-diazepinylium derivatives has led to the formation of unusually substituted [1,3]oxazolo[3,4-α]pyrimidines and novel heterocyclic system such as [1,3]oxazo-lo[3,4-a][1,3]diazepine.
各种异氰酸酯或硫光气与两性离子嘧啶鎓和 1,3-二氮杂鎓衍生物的反应导致形成异常取代的 [1,3] 恶唑并 [3,4-α] 嘧啶和新型杂环系统,如 [1,3]恶唑-lo[3,4-a][1,3]二氮杂。