Substituted 4-(3-Cyanopyridin-2-ylthio)acetoacetates: New Convenient Reagents for the Synthesis of Heterocycles
作者:Lyudmila Rodinovskaya、Anatoliy Shestopalov、Anna Gromova、Alexander Shestopalov
DOI:10.1055/s-2006-942433
日期:——
Polyfunctional 4-(3-cyanopyridin-2-ylthio)acetoacetates were used in the synthesis of 4-hydroxy-1H-thieno[2,3-b:4,5-b]dipyridin-2-ones. The latter were used in reactions with arylidene-malononitriles or in three-component reactions with aldehydes and malononitrile to give 2-amino-4-aryl-3-cyano-5-oxo-5,6-dihydro-4H-pyrano[2,3-d]pyrido[3',2':4,5]thieno[3,2-b]pyridines. Utilizing 4-(3-cyanopyridin-2
多官能团 4-(3-cyanopyridin-2-ylthio)acetoacetates 用于合成 4-hydroxy-1H-thieno[2,3-b:4,5-b]dipyridin-2-ones。后者用于与亚芳基-丙二腈的反应或与醛和丙二腈的三组分反应,得到 2-amino-4-aryl-3-cyano-5-oxo-5,6-dihydro-4H-pyrano[2, 3-d]吡啶并[3',2':4,5]噻吩并[3,2-b]吡啶。利用 4-(3-cyanopyridin-2-ylthio)acetoacetates 和亚芳基丙二腈或醛和丙二腈,我们开发了一种合成取代的 3-alkoxycarbonyl-6-amino-4-aryl-2-(3-cyanopyridin-2-基硫甲基)-4H-吡喃。取代的 4-(3-cyanopyridin-2-ylthio)acetoacetates 与水合肼反应生成取代的