Reaction of 4-arylmethylene-3-phenylisoxazolones and 4-arylmethylene-1,3-diphenylpyrazolones with enamines and nucleophilic heterocycles
作者:David C. Cook、Alexander Lawson
DOI:10.1039/p19740001112
日期:——
4-Arylmethylene-3-phenylisoxazolones (1) and 4-arylmethylene-1,3-diphenylpyrazolones (2) were treated with enamines (8), 3-phenylisoxazol-5(4H)-one (4), 1,3-diphenylpyrazol-5(4H)-one (6), and 2-phenyloxazol-5(4H)-one (3). The enamines were β-alkylated to give 1:1 adducts (9) and (10). The reaction of (1) with (6) and (2) with (4) gave symmetrical benzylidenedi-isoxazolones and -pyrazolones (7). 2-
用烯胺(8),3-苯基异恶唑-5(4 H)-一(4),1,3-处理4-芳基亚甲基-3-苯基异恶唑酮(1)和4-芳基亚甲基-1,3-二苯基吡唑并酮(2)二苯基吡唑-5(4 H)-一(6)和2-苯基恶唑-5(4 H)-一(3)。将烯胺β-烷基化以得到1:1的加合物(9)和(10)。(1)与(6)的反应和(2)与(4)的反应得到对称的苄二烯基-异恶唑酮和-吡唑啉酮(7)。2-苯基恶唑-5(4 H)-与(1)转移,通过转移亚苄基得到4-亚苄基-2-苯基恶唑酮(5),与(2)分离为相应的1:1加合物(19)马尿酸乙酯衍生物(20)。