4,5-Dihydro-2-thiazolamine → N-(2-thiazolin-2-yl)-p-(2-thenoyl)hydratropamide

Participants

Reaction Steps

To a stirred and refluxing solution of 3.06 parts of 2-amino-2-thiazoline in 60 parts of dioxane is added a solution of 4.2 parts of p-(2-thenoyl)hydratropoyl chloride in 45 parts of dioxane. Upon completion, stirring at reflux is continued for 30 minutes. The reaction mixture is cooled, filtered and the filtrate is evaporated. The residue is purified by column-chromatography over silicagel, using a mixture of chloroform and 5% of methanol as eluent. The pure fractions are collected and the eluent is evaporated. The residue is crystallized from ethanol, yielding N-(2-thiazoline-2-yl)-p-(2-thenoyl)hydratropamide; mp. 186.4° C.

Provenance & Evidence