Synthesis of 2,<i>N</i>,<i>N</i>-Trisubstituted 1<i>H</i>-Indole-1-carbothioamides from 2-(Acylmethyl)phenyl Isocyanides
作者:Kazuhiro Kobayashi、Kazuya Yamane、Shuhei Fukamachi
DOI:10.1002/hlca.201200236
日期:2013.1
A convenient procedure for the synthesis of 2,N,N‐trisubstituted 1H‐indole‐1‐carbothioamides from 2‐(acylmethyl)phenyl isocyanides has been developed. Thus, these isocyanides are converted into (Z)‐ [1‐alkyl (or phenyl)‐2‐(2‐isothiocyanatophenyl)ethenyl] 1,1‐dimethylethyl carbonates via an easy two‐step sequence. Treatment with secondary amines gave thiourea intermediates which afforded with CF3COOH
已经开发了一种方便的方法,可以从2-(酰基甲基)苯基异氰酸酯合成2,N,N-三取代的1 H-吲哚-1-碳硫代酰胺。因此,这些异氰酸酯通过简单的两步流程即可转化为(Z)-[1-烷基(或苯基)-2-(2-异硫氰酸根合苯基)乙烯基] 1,1-二甲基碳酸酯。用仲胺处理可得到硫脲中间体,该中间体可与CF 3 COOH(TFA)一起以所需的中等收率获得所需的产物。