1,3-Disulfonic acid imidazolium trifluoroacetate ([Dsim][CF3CO2]) was employed as an efficient, homogeneous and recyclable ionic liquid catalyst for the synthesis of triazoloquinazolinones, chromeno[4,3-d]benzothiazolopyrimidines and benzoimidazopyrimidine derivatives via one-pot multi-component reactions under thermal and solvent-free conditions. The catalyst is demonstrated excellent catalytic properties
1,3-二磺酸咪唑三氟乙酸盐([Dsim] [CF 3 CO 2 ])被用作一种高效,均相且可回收的离子液体催化剂,用于通过合成三唑并喹唑啉酮,苯并[4,3- d ]苯并噻唑并嘧啶和苯并咪唑并嘧啶衍生物在无热和无溶剂条件下进行一锅多组分反应。在短的反应时间和低成本下,该催化剂表现出优异的催化性能和良好的收率。所有产品均通过重结晶获得,无需繁琐的后处理。
N,N′-Dichlorobis(2,4,6-trichlorophenyl)urea (CC-2) as a new reagent for the synthesis of pyrimidone and pyrimidine derivatives via Biginelli reaction
A simple and efficient method for the synthesis of 3,4-dihydropyrimidin-2-(1H)one and benzo[4,5]imidazo/thioazo[1,2-a]pyrimidine derivatives has been described using N,N′-dichlorobis(2,4,6-trichlorophenyl)urea (CC-2) as a newreagent. This method is found to be efficient and convenient for the synthesis of pyrimidone and pyrimidine derivatives.
Silica sulfuric acid / ethylene glycol: An Efficient Eco-friendly Catalyst for One-pot Synthesis of Tricyclic and Tetarcyclic Dihydropyrimidine Derivatives.
A simple and efficient eco-friendly chemical procedures were developed for the synthesis of series of tricyclic and tetarcyclic dihydropyrimidine derivatives in excellent yields via a one-pot, multi-component reaction in the presence of silicasulfuric acid / ethylene glycol catalyst. The Tricyclic dihydropyrimidine derivatives 1a-g (benzo[4,5]imidazo[1,2-a]pyrimidine derivatives) were synthesized
Thiamine hydrochloride (VB1): an efficient promoter for the one-pot synthesis of benzo[4,5]imidazo[1,2-a]pyrimidine and [1,2,4]triazolo[1,5-a]pyrimidine derivatives in water medium
作者:Junhua Liu、Min Lei、Lihong Hu
DOI:10.1039/c2gc16499j
日期:——
A straightforward and general method has been developed for the synthesis of benzo[4,5]imidazo[1,2-a]pyrimidine and [1,2,4]triazolo[1,5-a]pyrimidinederivatives by simply combining 2-aminobenzimidazole or 3-amino-1,2,4-triazole, aldehyde, and β-dicarbonyl compound in the presence of a catalytic amount of thiamine hydrochloride (VB1). The advantages of this method are the use of an inexpensive and readily
已经开发了一种简单而通用的方法来合成 苯并[4,5]咪唑并[1,2- a ]嘧啶和[1,2,4]三唑并[1,5- a ]嘧啶衍生物简单地组合即可2-氨基苯并咪唑 或者 3-氨基1,2,4-三唑, 醛以及β-二羰基化合物在催化量的 盐酸硫胺素(VB 1)。这种方法的优点是使用便宜且容易获得的催化剂,简便的后处理,提高的产量以及使用 水 作为 溶剂 被认为是相对环境友好的。
One-pot synthesis of tricyclic dihydropyrimidine derivatives and their biological evaluation
作者:Navneet Kaur、Kamalpreet Kaur、Tilak Raj、Gaganpreet Kaur、Ajnesh Singh、Thammarat Aree、Sae-Jin Park、Tack-Joong Kim、Narinder Singh、Doo Ok Jang
DOI:10.1016/j.tet.2014.11.039
日期:2015.1
A series of tricyclic dihydropyrimidine derivatives were synthesized using a one-pot, three-component Traube-Schwarz reaction in the presence of catalyst Zn(ClO4)(2)center dot 6H(2)O. All the purified compounds were evaluated for their in vitro anticancer activity against three different cancer cell lines such as prostate cancer cells (PO), lung cancer cells (NCI-H1299) and colon cancer cells (HCT116). In vitro DNA-intercalation ability of the compounds was investigated by UV vis absorption spectroscopy, showing the insertion of compound into the DNA base pairs and a strong interaction with the DNA double helix. (C) 2014 Elsevier Ltd. All rights reserved.