A Synthesis of Functionalized Thiazoles and Pyrimidine-4(3H)-thiones from 1,1,3,3-Tetramethylguanidine, Acetylenic Esters, and Aryl Isothiocyanates
作者:Issa Yavari、Asiyeh Amirahmadi、Mohammad Halvagar
DOI:10.1055/s-0036-1590862
日期:2017.12
Aryl isothiocyanates react with dialkyl 2-[bis(dimethylamino)methylene]amino}maleates, generated from 1,1,3,3-tetramethylguanidine and acetylenic esters, to afford 2-(dimethylamino)-1,3-thiazole derivatives, functionalized 2-(dimethylamino)-6-thioxo-1,6-dihydropyrimidines, and ethyl 2-(dimethylamino)-6-[(4-nitrophenyl)imino]-4-phenyl-6H-1,3-thiazine-5-carboxylate, in moderate to good yields.
异硫氰酸芳基酯与由 1,1,3,3-四甲基胍和乙炔酯生成的 2-[双(二甲氨基)亚甲基]氨基}马来酸二烷基酯反应,得到功能化的 2-(二甲氨基)-1,3-噻唑衍生物2-(二甲氨基)-6-硫代-1,6-二氢嘧啶和2-(二甲氨基)-6-[(4-硝基苯基)亚氨基]-4-苯基-6H-1,3-噻嗪-5-羧酸乙酯, 中等至良好的产量。