supported on silica gel (HBF4‐SiO2) catalyzes efficiently the threecomponent condensation of an aldehyde, a 1,3‐dicarbonyl compound and urea or thiourea to afford the corresponding 3,4‐dihydropyrimidin‐ 2(1H)‐ones and thiones in high yields. The ambient conditions, fast reaction rates, and excellent product yields are the important characteristics of this reaction.
(C<sub>5</sub>H<sub>6</sub>N<sub>4</sub>O)(C<sub>5</sub>H<sub>5</sub>N<sub>4</sub>O)<sub>3</sub>(C<sub>5</sub>H<sub>4</sub>N<sub>4</sub>O)[Bi<sub>2</sub>Cl<sub>11</sub>]Cl<sub>2</sub>as a simple and efficient catalyst in Biginelli reaction
作者:Xiang Zhang、Xiaoyu Gu、Yuhua Gao、Shipeng Nie、Hongfei Lu
DOI:10.1002/aoc.3590
日期:2017.4
A highly efficient and facile procedure for the one‐pot three‐component synthesis of 3,4‐dihydropyrimidin‐2‐(1H)ones/thiones from the one‐pot condensation of aldehyde, β‐dicarbonyl compound and urea/thiourea was developed. The methodology is applicable to a wide range of substrates with high yield in the presence of (C5H6N4O)(C5H5N4O)3(C5H4N4O)[Bi2Cl11]Cl2. The complex is an air‐stable, environmentally
开发了一种高效,简便的方法,该方法可通过醛,β-二羰基化合物和尿素/硫脲的一锅缩合反应一锅三组分合成3,4-二氢嘧啶-2-(1 H)酮/硫酮。该方法适用于(C 5 H 6 N 4 O)(C 5 H 5 N 4 O)3(C 5 H 4 N 4 O)[Bi 2 Cl 11 ] Cl 2。该络合物是一种对空气稳定,对环境友好且可回收的催化剂,可以有效催化Biginelli反应。该催化剂具有高催化效率和低催化剂载量,并且可以循环十次而活性损失很小。
Synthesis and In Silico Prediction of Biological Activity and Acute Toxicity of [1,3]Thiazolo[3,2-a]pyrimidines Containing Aliphatic Aldehyde Fragments
作者:I. V. Mineyeva、Ya. V. Faletrov、V. A. Staravoitava、V. M. Shkumatov
DOI:10.1134/s1070428022070028
日期:2022.7
Abstract An efficient method has been developed for the synthesis of novel [1,3]thiazolo[3,2-a]pyrimidines containing a pentyl or 1-acetoxycyclopropylmethyl group at the 5-position. Potential biological activity of the synthesized compounds has been evaluated in silico by predicting their phospholipid bilayer permeability and by molecular docking to protein kinases and human acetylcholinesterase. Study
摘要 已经开发了一种有效的方法来合成在 5 位含有戊基或 1-乙酰氧基环丙基甲基的新型 [1,3]噻唑并[3,2- a ]嘧啶。合成化合物的潜在生物活性已通过预测其磷脂双层通透性和通过分子对接蛋白激酶和人乙酰胆碱酯酶进行计算机评估。对噻唑并嘧啶对酿酒酵母生长影响的研究表明,这些化合物不存在急性毒性。(2 Z )-6-Acetyl-2-(2-hydroxy-5-nitrobenzylidene)-7-methyl-5-pentyl-5 H -[1,3]thiazolo[3,2 - a ]pyrimidin-3(2 H )-one 表现出抗菌活性枯草芽孢杆菌。
Bhinge, Somanath D.; Saifuddin Khalid; Sunil Kumar, Asian Journal of Chemistry, 2010, vol. 22, # 5, p. 3381 - 3384