2-Azabuta-1,3-diene-4-carbonitriles: stereoselective synthesis and nucleophilic substitution at the carbon–nitrogen double bond
作者:Antonio Lorente、Marta Casillas、Pilar Gomez-Sal、Antonio Manzanero
DOI:10.1139/v96-032
日期:1996.3.1
3-diene-4,4-dicarbonitriles with pyrrolidine, which afforded 1-(1-pyrrolidinyl) derivatives 20, 21, and 23. X-ray crystallographic analyses of 21 and 23 established the E stereochemistry of the C—N double bond. Key words: 2-azabuta-1,3-diene-4-carbonitriles: stereoselective synthesis, nucleophilic substitution and X-ray diffraction; N-alkenylamides: methylation.
(E)-1-甲氧基-2-azabuta-1,3-diene-4-carbonitriles 的合成是通过 N-烯基酰胺 9 和 11 的甲基化进行的。 Z 异构体是通过处理 (E)-1-甲硫基-2-azabuta-1,3-diene-4,4-dicarbonitriles 与甲醇钠的甲醇溶液。我们还描述了 (E)-1-methylthio-2-azabuta-1,3-diene-4,4-dicarbonitriles 与吡咯烷的反应,得到了 1-(1-pyrrolidinyl) 衍生物 20、21 和 23。X 21和23的-射线晶体学分析确定了CN双键的E立体化学。关键词:2-azabuta-1,3-diene-4-carbonitriles:立体选择性合成、亲核取代和X射线衍射;N-烯基酰胺:甲基化。