One‐pot three‐component reaction; synthesis of new symmetrically bridge 4,4′‐(1,4‐phenylene)di‐pyrimidines under solvent free conditions
作者:Asmaa H. Mohamed、Hager S. Abdelmeged、Raafat M. Shaker、Fathy F. Abdel‐Latif
DOI:10.1002/jhet.4363
日期:2021.12
describes a facile one-pot synthesis of a new series of 4,4′-(1,4-phenylene)-dipyrimidines (6a–c and 10a, b) by the reaction of terephthalaldehyde (1), 2-acetylthiophene, and/or nitriles with S-benzylthiouronium chloride 3a. And also, the di-pyrimidinones 13a-d were obtained by the reaction of different amidines 3a–d and ethyl cyanoacetate (11) with terephthalaldehyde (1) under solvent-free conditions in the
本文描述了通过对苯二醛 ( 1 )、2-乙酰噻吩的反应轻松一锅合成一系列新的 4,4'-(1,4-亚苯基)-二嘧啶 ( 6a–c和10a,b ) ,和/或腈与 S-苄基硫脲氯化物3a。此外,二嘧啶酮13a-d是通过不同的脒3a-d和氰乙酸乙酯(11)与对苯二醛(1)在无溶剂条件下在氢氧化钠存在下反应获得的这些反应的有效基础。最终产品通过光谱数据和元素分析、IR、MS、1H 和13 C NMR 光谱。