A Facile Synthesis of Oxoindenothiazine and Dioxospiro(indene-2,4′-thiazine) Derivatives from (Substituted ethylidene)hydrazinecarbothioamides
作者:Alaa A. Hassan、Yusria R. Ibrahim、Essmat M. El-Sheref、Mahmoud A. A. Ibrahim、Stefan Bräse
DOI:10.1002/jhet.2234
日期:2015.7
(E)‐2‐[2‐(1‐Substituted ethylidene)hydrazinyl]‐5‐oxo‐9b‐hydroxy‐5,9b‐dihydroindeno[1,2‐d][1,3]‐thiazine‐4‐carbonitriles and (E)‐5‐oxo‐[(E)‐(1‐substituted ethylidene)hydrazinyl]‐2,5‐dihydroindeno[1,2‐d][1,3]thiazine‐4‐carbonitriles have been obtained from the reaction of 2‐(substituted ethylidene)hydrazinecarbothioamides with 2‐(1,3‐dioxo‐2,3‐dihydro‐1H‐inden‐2‐ylidene)propanedinitrile (1) in ethyl
(E)-2- [2-(2-(1-亚乙基)肼基] -5-氧代-9b-羟基-5,9b-二氢茚并[1,2- d ] [1,3]-噻嗪-4-腈和从反应中获得了(E)-5-氧代[[ E)-(1-取代的亚乙基)肼基] -2,5-二氢茚并[1,2- d ] [1,3]噻嗪-4-腈乙酸乙酯溶液中的2-(取代亚乙基)肼甲硫基酰胺与2-(1,3-二氧代-2-3,2-二氢-1 H-茚满-2-亚烷基)丙腈(1)的混合物。但是,(Z)-6′-氨基-1,3-二氧代-3′-取代的2′-[(E)-(1-苯乙叉基)azo]]′1,2′,3,3′-四氢螺(在反应过程中观察到茚2,4'-[1,3]噻嗪)-5'-腈带有(1)的N-取代-2-(1-苯乙叉基)肼基碳硫磺酰胺。产品的结构分配已根据1 H-,13 C-NMR,质谱和理论计算得到确认。