Studies with Functionally Substituted Enamines: The Reactivity of Enaminals and Enamino Esters toward Naphthoquinone, Hydrazonoyl Halides, Aminoazoles and Hippuric Acid
作者:Saad Makhseed、Balkis AL-Saleh、Huwaida M. Hassaneen、Mohamed Hilmy Elnagdi
DOI:10.1055/s-2005-921750
日期:——
yield benzoindole derivatives 7. Enamine 1b reacts with hydrazonoyl halides 8 to yield 3,4-disubstituted pyrazoles 12. On the other hand, the enaminal la failed to react with 8, while enamine ester 1c afforded hydrazone 16 on treatment with 8. The enamino ester 1b afforded triethyl 1,3,5-benzenetricarboxylates on refluxing in acetic acid.
烯胺 la,b 与萘醌 (2) 反应生成萘并呋喃醛 5a,b,烯胺酯 1c 与 2 反应生成苯并吲哚衍生物 7。烯胺 1b 与肼酰卤 8 反应生成 3,4-二取代吡唑 12。另一方面,烯胺1a不能与8反应,而烯胺酯1c在用8处理时得到腙16。烯胺酯1b在乙酸中回流时得到1,3,5-苯三甲酸三乙酯。