A Convenient Synthesis of N1-Substituted 3,4-Dihydropyrimidin-2(1<i>H</i>)-ones by Cyclocondensation of α-Chlorobenzyl Isocyanates with Ethyl <i>N</i>-alkyl(aryl)-β-aminocrotonates
作者:Mykhaylo Vovk、Volodymyr Sukach、Andriy Bol’but、Anatoliy Sinitsa
DOI:10.1055/s-2006-926241
日期:——
A new convenient approach to the synthesis of N1-sub-stituted 3,4-dihydropyrimidin-2(1H)-ones was developed using the regioselective cyclocondensation of α-chlorobenzyl isocyanates with ethyl N-alkyl(aryl)-β-aminocrotonates. A number of Nl-aryl and N1-alkyl substituted Biginelli compounds difficult to obtain by other methods were prepared with high yields.
使用 α-氯苄基异氰酸酯与 N-烷基(芳基)-β-氨基巴豆酸乙酯的区域选择性环缩合反应,开发了一种合成 N1 取代的 3,4-二氢嘧啶-2(1H)-酮的新方法。以高收率制备了许多通过其他方法难以获得的 N1-芳基和 N1-烷基取代的 Biginelli 化合物。