A convenient one-pot synthesis of trisubstituted 1,3,5-triazines through intermediary amidinothioureas
作者:Jitendra C. Kaila、Arshi B. Baraiya、Amit N. Pandya、Hitesh B. Jalani、V. Sudarsanam、Kamala K. Vasu
DOI:10.1016/j.tetlet.2010.01.034
日期:2010.3
A thiophile-promoted one-pot synthesis of trisubstituted 1,3,5-triazines starting from isothiocyanates, N,N-diethylamidines, and carbamidines has been studied. The reaction proceeds through the formation of intermediary amidinothioureas, which react with carbamidines in the presence of mercury(II) chloride to generate the desired 1,3,5-triazines in good to moderate yields (40–70%).
已研究了由异硫氰酸酯,N,N-二乙基am和尿素起始的由噻吩促进的一锅合成三取代1,3,5-三嗪。该反应通过形成中间体a基硫脲而进行,该中间体在氯化汞(II)的存在下与氨基甲酰胺反应生成所需的1,3,5-三嗪,并具有良好至中等的收率(40-70%)。