Polycarbonyl heterocycles, Part IX1: Synthesis of thiophene-2,3-dione derivatives and their transformation to pyrrolo[3,2-c]pyridine systems
作者:Barbara Zaleska、Dariusz Cież、Jerzy Klimek
DOI:10.1016/s0040-4039(98)00812-0
日期:1998.6
Thiophene-2,3-dione derivatives 2 were prepared in the reaction of β-aminovinylthioamides 1 with ethyl oxalyl chloride. Treatment of compounds 2b,c with malonodinitrile led to the ring transformation of the thiophene-2,3-dione system to pyrrolo[3,2-c]pyridine derivatives 4b,c.
通过β-氨基乙烯基硫代酰胺1与乙二酰氯乙基的反应制备噻吩-2,3-二酮衍生物2。用丙二腈处理化合物2b,c导致噻吩-2,3-二酮系统环转化为吡咯并[3,2- c ]吡啶衍生物4b,c。