Triton-B Mediated One-Pot Multicomponent Synthesis of 3,5 Substituted Tetrahydro-2H-1,3,5-Thidiazine-2-Thiones
作者:Ram Kishore、Monika Kamboj、Manisha Shukla
DOI:10.13005/ojc/340627
日期:2018.12.28
A new-fangled, proficient, one-pot multi component, intramolecular C-S bond formation reaction, mediated by phase transfer catalyst, Triton-B, is described in this paper. The reaction of alkyl/phenyl amines, CS2 and formaldehyde catalyzed via Triton-B resulted in formation of 3-(Alkyl or aryl methyl), 5-(Alkyl or aryl methyl) substituted tetrahydro-2H-1,3,5-thiadiazine-2-thiones compounds(1a-15a).
本文描述了一种新的,高效的,单锅多组分分子内CS键形成反应,该反应是由相转移催化剂Triton-B介导的。通过Triton-B催化的烷基/苯胺,CS2和甲醛的反应导致形成3-(烷基或芳基甲基),5-(烷基或芳基甲基)取代的四氢-2H-1,3,5-噻二嗪- 2-硫酮化合物(1a-15a)。借助元素分析,IR,NMR和质谱法对这些化合物(1a-15a)进行了表征。PTC介导的反应需要温和的反应条件并缩短完成时间。该反应在常温下在无溶剂条件下以良好的收率和高的选择性进行。这种方法不鼓励用于这种偶联反应的传统的无机碱合成方法。