Electrogenerated base-promoted synthesis of 5-aryl-5,6-dihydro-2H-pyrano[2,3-d]pyrimidine-2,4,7-triones by multicomponent assembly of barbituric acid, aldehydes and Meldrum's acid at room temperature
SCMNPs@Urea/Py-CuCl<sub>2</sub>: a recyclable catalyst for the synthesis of pyrano[2,3-<i>d</i>]pyrimidinone and pyrano[2,3-<i>d</i>] pyrimidine-2,4,7-trione derivatives
作者:Jun Zhang、Hongqing Song、Ruirui Cui、Chaoyong Deng、Qahtan A. Yousif
DOI:10.1080/00958972.2020.1737681
日期:2020.2.16
Abstract An efficient, simple, and mild strategy for the one-pot multicomponent synthesis of pyrano[2,3-d]pyrimidinone and pyrano[2,3-d]pyrimidine-2,4,7-trione derivatives is described using SCMNPs@Urea/Py-CuCl2 nanoparticles as a reusable heterogeneous magnetic nanocatalyst. The catalyst was characterized using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), vibrating
Microwave-assisted, mild, facile, and rapid one-pot three-component synthesis of some novel pyrano[2,3-d]pyrimidine-2,4,7-triones
作者:Sadeq Hamood Saleh Azzam、M.A. Pasha
DOI:10.1016/j.tetlet.2012.10.056
日期:2012.12
Novel pyrano[2,3-d]pyrimidine-2,4,7-triones were synthesized in 90–97% yield via a three-component reaction of an aromatic aldehyde, Meldrums acid, and barbituric acid in the presence of 10 mol % K2CO3 under microwave irradiation. This is the first protocol to be reported for the synthesis of title compounds and the significant features of the present protocol are simplicity, high yields, short reaction
新型的吡喃并[2,3 - d ]嘧啶-2,4,7-三酮在10 mol%的存在下通过芳族醛,Meldrums酸和巴比妥酸的三组分反应以90-97%的产率合成在微波辐射下的K 2 CO 3。这是首次报道的用于标题化合物合成的方案,本方案的显着特征是简单,高收率,反应时间短,需要进行水后处理程序,对环境无害,并且不进行色谱纯化。
Facile and greener method synthesis of pyrano[2,3-d]pyrimidine-2,4,7-triones: Electrochemical and biological activity evaluation studies
作者:Santosh Y. Khatavi、Kantharaju Kamanna
DOI:10.1016/j.molstruc.2021.131708
日期:2022.2
simple and efficientprotocol using a vast number of heterogeneous and homogeneous catalysts. Various methods reported on this particular study gave a glimpse of risk factors such as difficulty, hazardous, and also expensive. In order to minimize some of these limitations, we have developed greener and sustainable protocol for the synthesis of pyrano[2,3-d] pyrimidine-2,4,7-trione derivatives via multicomponent
Pyrano[2,3 - d ]pyrimidine-2,4,7-triones 在各种药理学应用中得到证实,例如抗菌、抗真菌、抗癌、抗高血压等。因此,化学家更加关注使用大量非均相和均相催化剂开发简单有效的方案。在这项特定研究中报告的各种方法让我们一瞥风险因素,例如困难、危险和昂贵。为了最小化这些局限性,我们已经开发更环保的和可持续的协议吡喃并[2,3-的合成d ]嘧啶-2,4,7-三酮衍生物通过由10%的水提取物的多组分催化反应(MCRS)橙果壳灰 (WEOFSA) ( Citrus sinensis) 提取物,该反应通过微波辐射加速。反应后分离的产物被重结晶并通过FT-IR、1 H-、13 C NMR和通过C、H、N分析表征。此外,对选定的吡喃并 [2, 3- d ] 嘧啶-2,4,7-三酮衍生物进行电化学和抗菌研究。
Electrogenerated base-promoted synthesis of 5-aryl-5,6-dihydro-2H-pyrano[2,3-d]pyrimidine-2,4,7-triones by multicomponent assembly of barbituric acid, aldehydes and Meldrum's acid at room temperature