作者:Anton Tverdokhlebov、Alexander Andrushko、Andrey Tolmachev
DOI:10.1055/s-2006-926438
日期:2006.5
react with mercaptoacetic acid in refluxing pyridine yielding 2-[(arylsulfonyl)methylidene]thiazolidin-4-ones. The latter underwent alkylation with α-bromoketones in the presence of K 2 CO 3 selectively at the nitrogen atom. Further formylation of the resulting phenacyl derivatives with excess DMF-POCl 3 complex afforded 5-aroyl-7-aryl-sulfonyl-2-[(dimethylamino)methylidene]pyrrolo[2,1-b]thiazol-3(2H)-ones
(芳基磺酰基)乙腈与巯基乙酸在回流的吡啶中反应生成 2-[(芳基磺酰基)亚甲基]噻唑烷-4-酮。后者在 K 2 CO 3 存在下选择性地在氮原子处用 α-溴酮进行烷基化。用过量的 DMF-POCl 3 复合物进一步甲酰化所得的苯甲酰基衍生物,得到 5-芳酰基-7-芳基-磺酰基-2-[(二甲基氨基)亚甲基]吡咯并[2,1-b]噻唑-3(2H)-酮。