Reactions of benzotriazole with formaldehyde and aliphatic primary amines: selective formation of 1 : 1 : 1, of 2 : 2 : 1, and of 2 : 3 : 2 adducts and a study of their reactions with nucleophiles
作者:Alan R. Katritzky、Boguslaw Pilarski、Laszlo Urogdi
DOI:10.1039/p19900000541
日期:——
the amine, and is also influenced by the nature of the solvent. Primary aliphatic 1,2- or 1,3-diamines yield cyclic aminals which are imidazolidine (8a) and hexahydropyrimidine (8b) derivatives. Reactions of these aminals with Grignard reagents, and with cyanide anion as nucleophiles, are also described.
苯并三唑(BtH)在水性介质中容易与脂肪族伯胺和甲醛反应生成三种或更多种产品中的一种或多种:(i)(BtCH 2)2 NR(5),(ii)(BtCH 2 NR)2 CH 2(6)和/或(iii)BtCH 2 NHR(7)。形成的产物取决于底物的摩尔比以及胺中的空间位阻程度,并且还受溶剂性质的影响。伯脂族1,2-或1,3-二胺生成的环状缩醛是咪唑烷(8a)和六氢嘧啶(8b))衍生产品。还描述了这些缩醛与格氏试剂以及氰化物阴离子作为亲核试剂的反应。