A practical and eco-friendly synthesis of stereocontrolled alkylaminomethylidene derivatives of 2-thiohydantoins by dimethylamine substitution
作者:Jean-René Chérouvrier、François Carreaux、Jean Pierre Bazureau
DOI:10.1016/s0040-4039(02)02156-1
日期:2002.11
-4-ones 3(a–c) available in two steps from methyl glycinate hydrochloride, represent a useful synthetic tool for efficient and mild solventless preparations of new alkylaminomethylidene derivatives of 2-thiohydantoins 8(a–e), 10(a–c) and 12(a–d) by stereocontrolled transamination reactions under microwave irradiations. The 1H, 13C NMR spectrum and the (5Z)-conformation of some representatives products
可从甘氨酸甲酯盐酸盐分两步获得的3-烷基-5-二甲基氨基亚甲基-2-硫代-咪唑啉丁-4-酮3(a – c)是有用的合成工具,可用于高效,温和的无溶剂制备2-的新烷基氨基亚甲基衍生物硫代乙内酰脲8(a - e),10(a - c)和12(a - d)在微波辐射下通过立体控制的氨基转移反应生成。的1个H,13 C NMR光谱和(5 ž)-一些代表性产品的构形也进行了讨论。