Novel Reaction of N,N'-Bisarylmethanediamines with Formaldehyde. Synthesis of Some New 1,3,5-Triaryl-1,3,5-hexahydrotriazines
作者:Mehdi Ghandi、Farshid Salimi、Abolfazl Olyaei
DOI:10.3390/11070556
日期:——
methanediamines 5a-c with aqueous formaldehyde in refluxing acetonitrile leads to the formation of the corresponding 1,3,5-triaryl-1,3,5-hexa-hydrotriazines 6a-c. The stoichiometric reactions of 2-aminopyrimidine and 2-amino-pyrazine with aqueous formaldehyde in acetonitrile under reflux conditions also afforded 6a and 6b, respectively. Treatment of 2-aminopyrimidine with aqueous formaldehyde in a 3:2 ratio yielded
N,N'-双芳基(芳基 = 2-嘧啶基、2-吡嗪基和 4-硝基苯基)甲二胺 5a-c 与甲醛水溶液在回流乙腈中的酸催化环缩合反应导致形成相应的 1,3,5-三芳基-1,3,5-六氢三嗪6a-c。2-氨基嘧啶和2-氨基-吡嗪与甲醛水溶液在回流条件下的化学计量反应也分别得到6a和6b。用 3:2 的甲醛水溶液处理 2-氨基嘧啶,得到 N,N',N"-三(2-嘧啶基)二亚甲基三胺 (7a) 作为唯一产物,随后与甲醛反应也得到 6a。反应还研究了 N,N'-联苯甲二胺与甲醛的反应。