SYNTHETIC REACTIONS OF COUMARIN-3-(4-AMINOSULFONYL)-CARBANILIDE DERIVATIVES WITH REACTIVE METHYLENE COMPOUNDS
作者:Ahmed M.M. El-saghier、El-Jazi I. Al-afaleq
DOI:10.1080/10426509808035678
日期:1998.8.1
Abstract Coumarin and benzo[f]coumarin–3–(4–aminosulfonyl)carbanilide derivatives 3a, b react with malononitrile or ethyl cyanoacetate to afford pyrido[3,4–c]– and pyrido[3,4–c]–benzo–[f]coumarin derivatives 4a–d. Compounds 4a–d were also prepared by treatment of arylidene–malononitrile or arylidenecyanoester derivatives 1a–d with ethyl 2–[4–aminosulfonyl carbanilide]acetate 2. 3a, b Derivatives were also
摘要 香豆素和苯并[f]香豆素-3-(4-氨基磺酰基)脲衍生物3a、b与丙二腈或氰乙酸乙酯反应生成吡啶并[3,4-c]-和吡啶并[3,4-c]-苯并- [f]香豆素衍生物4a-d。化合物 4a-d 也可以通过用 2-[4-氨基磺酰脲]乙酸乙酯 2 处理亚芳基-丙二腈或亚芳基氰基酯衍生物 1a-d 来制备。3a、b 衍生物也可以与各种具有 α -氰基或α-酮基通过亲核加成和环化得到吡啶并[3,4-c]-和吡啶并[3,4-c]-苯并[氟香豆素衍生物5a、b-11a、b。