Metal free coupling of heteroaryl N -tosylhydrazones and thiols: Efficient synthesis of sulfides
作者:Mario Alfredo García-Carrillo、Ángel Guzmán、Eduardo Díaz
DOI:10.1016/j.tetlet.2017.04.021
日期:2017.5
A metal free coupling of heteroaromatic N-tosylhydrazones with thiols is presented. A convenient synthetic route to synthesize heteroaryl N-tosylhydrazones is also showed. Valuable thioethers with pyrroles, pyridines, thieno[2,3-b]pyridines, imidazo[1,2-a]pyridines, and 6H-thieno[2,3-b]pyrroles derivatives were synthesized in good yields. This coupling reaction can be carried out in a one-pot fashion
提出了杂芳族N-甲苯磺酰基hydr与硫醇的无金属偶联。还显示了合成杂芳基N-甲苯磺酰基hydr的简便合成途径。以高收率合成了具有吡咯,吡啶,噻吩并[2,3- b ]吡啶,咪唑并[1,2- a ]吡啶和6 H-噻吩并[2,3- b ]吡咯衍生物的有价值的硫醚。该偶联反应可以一锅法进行,并且通过使用杂芳基醛而放大至克级,而无需分离N-甲苯磺酰zone。