Unusual product from the acid-catalyzed one-pot, multicomponent reaction of thiocarbohydrazide, aldehydes, and phenacyl bromides
作者:Mohanad Shkoor、Ayahtallah Al-Abade、Ibtesam Aleteiwib、Mahmoud Al-Talib、Hasan Tashtoush
DOI:10.1080/00397911.2017.1332225
日期:2017.8.18
five-membered thiazole ring bonded to two hydrazone motifs is described. The acid-catalyzed reaction of one equivalent of thiocarbohydrazide, two equivalents of aromatic aldehydes, and one equivalent of phenacyl bromides afforded the five-membered thiazole ring. The reactions proceed with novel chemoselectivity. Similar reported protocols have always afforded 1,3,4-thiadiazines. GRAPHICAL ABSTRACT
摘要描述了一种用于合成与两个腙基序结合的新型五元噻唑环的一锅三组分方案。一当量的硫代碳酰肼、两当量的芳香醛和一当量的苯甲酰溴在酸催化下反应得到五元噻唑环。反应以新的化学选择性进行。类似的报道协议一直提供 1,3,4-噻二嗪。图形概要