Heterocyclisation of substituted ylidenethiocarbonohydrazides using dimethyl acetylenedicarboxylate
作者:Alaa A. Hassan、Fathy F. Abdel-Latif、Mohamed Abdel Aziz、Sara M. Mostafa、Stefan Bräse、Martin Nieger
DOI:10.1515/chempap-2015-0092
日期:2015.1.1
oxothiazolidin-2-ylidenehydrazono]succinate, dimethyl [2-alkylidenehydrazono)-5-(2-methoxy-2-oxoethylidene)-4-oxothiazolidin-3-yl)amino]succinate and methyl (4-amino-5-oxo-3-thioxo-2,3,4,5-tetrahydro-1,2,4-triazine-6-yl)acetate affording yields of 61–54 %, 22–18 % and 14–11 %, respectively, via a condensation reaction of dimethyl acetylenedicarboxylate (DMAD) with (substituted ylidene)thiocarbonohydrazides
一种简便快速的合成二甲基-2- [3-氨基-5-(2-甲氧基-2-氧代亚乙基)-4-氧噻唑烷二-2-亚甲基肼基]琥珀酸酯,二甲基[[2-亚烷基肼基] -5- (2-甲氧基-2-氧代亚乙基)-4-氧噻唑烷-3-基)氨基]琥珀酸酯和(4-氨基-5-氧代-3-硫代氧代2,3,4,5-四氢-1,2,通过乙酰基乙二酸二甲酯(DMAD)与(取代的亚烷基)硫代碳酰肼的缩合反应,可分别得到4-三嗪-6-基)乙酸酯的产率为61-54%,22-18%和14-11%。通过单晶X射线分析最终确认了其中一种产物。提出了形成产物的机制。