Reactions with 1(2H)-phthalazinones, 4,5-dihydro-3(2H)-pyridazinones and 3-pyrazolin-5-ones
作者:A. Mustafa、W. Asker、A.H. Harhash、K.M. Foda、H.H. Jahine、N.A. Kassab
DOI:10.1016/s0040-4020(01)98615-6
日期:1964.1
The condensation of 1(2H)-phthalazinones (Ia-c), 4,5-dihydro-6-phenyl-3(2H)-pyridazinone (IIIa), and 4-arylidene-4,5-dihydro-6-phenylpyridazinones (IVa-b) with secondary amines and formaldehyde yields the corresponding N-Mannich-bases (Id, IIIc-d, and IVi-j, respectively). Similarly, reaction with acrylonitrile, affords the cyanoethylated products (Ig, IIIf, and IVk-1, respectively). The Mannich-bases
1(2H)-酞嗪酮(Ia-c),4,5-二氢-6-苯基-3(2H)-哒嗪酮(IIIa)和4-亚芳基-4,5-二氢-6-苯基哒嗪酮的缩合反应(具有仲胺和甲醛的IVa-b)产生相应的N-曼尼希碱(分别为Id,IIIc-d和IVi-j)。类似地,与丙烯腈反应,得到氰基乙基化产物(分别为Ig,IIIf和IVk-1)。曼尼希碱(Id)也可以通过适当的胺与相应的氯甲基-(If)或羟甲基酞嗪酮衍生物(Ie)反应获得;通过用相同的试剂处理IIIa的羟甲基衍生物。在乙胺存在下,la-c与甲醛缩合,生成相应的双衍生物(II)。