Vilsmeier-Haack formylation of acetonitrile revisited: Synthesis of novel pyrazolo[1,5-<i>a</i>]pyrimidines and triazolo[1,5-<i>a</i>]pyrimidine
作者:Maruti G. Ghagare、Dilip R. Birari、Deepak P. Shelar、Raghunath B. Toche、Madhukar N. Jachak
DOI:10.1002/jhet.76
日期:2009.3
Vilsmeier–Haack formylation of acetonitrile using dimethylformamide and phosphorus oxychloride leading to a novel intermediate, N-((E)-3-(dimethylamino)-2-formylacryloyl)formamidine and its utility in the synthesis of pyrimidine-fused heterocycles such as pyrazolo[1,5-a]pyrimidines and triazolo[1,5-a]pyrimidine is reported. J. Heterocyclic Chem., 46, 327 (2009).
Vilsmeier-Haack使用二甲基甲酰胺和乙腈对乙腈进行甲酰化氯氧磷生成新的中间体N -((E)-3-(二甲基氨基)-2-甲酰基丙烯酰基)甲idine报道了其在嘧啶融合的杂环如吡唑并[1,5- a ]嘧啶和三唑并[1,5- a ]嘧啶的合成中的用途。杂环化学杂志,46,327(2009)。