On the Synthesis and Reactivity of the <i>Z</i>-2,4-Dinitrophenylhydrazone of 5-Amino-3-benzoyl-1,2,4-oxadiazole
作者:Barbara Cosimelli、Susanna Guernelli、Domenico Spinelli、Silvestre Buscemi、Vincenzo Frenna、Gabriella Macaluso
DOI:10.1021/jo0157270
日期:2001.9.1
The synthesis of the title compound (4b) has been completed: its rearrangement (in dioxane/water; 1:1, v/v) into N-(2,4-dinitrophenyl)-5-phenyl-2H-1,2,3-triazol-4-ylurea (7) has been quantitatively studied in a wide reactivity (at 293 K, k(A) 10(-8) -4 s(-1)) and pS+ (4.5-14.1) range and compared with that of the Z-2,4-dinitrophenylhydrazone of 3-benzoyl-5-phenyl-1,2,4-oxadiazole (10), of the 3-(p-nitro)phenylureine
标题化合物(4b)的合成已完成:将其重排(在二恶烷/水中; 1:1,v / v)成N-(2,4-二硝基苯基)-5-苯基-2H-1,2, 3-triazol-4-ylurea(7)已在广泛的反应性(在293 K,k(A)10(-8)-4 s(-1))和pS +(4.5-14.1)范围内进行了定量研究并进行了比较与3-苯甲酰基-5-苯基-1,2,4-恶二唑的Z-2,4-二硝基苯基hydr(10),5-苯基-1,2-的3-(对硝基)苯基脲的4-恶二唑(13)和N-(5-苯基-1,2,4-恶二唑-3-基)-N'-对硝基苯基甲am(14)。考虑到所涉及的侧链的结构以及在重排中获得的最终环的稳定性,已经很好地解释了结果(反应性,发生特定或一般的碱催化反应,是否存在限速常数的证据)。