One-pot synthesis of pyrido[2,3-<i>d</i>]pyrimidines via efficient three-component reaction in aqueous media
作者:Daqing Shi、Shunjun Ji、Lihui Niu、Jingwen Shi、Xiangshan Wang
DOI:10.1002/jhet.5570440517
日期:2007.9
A short and facile synthesis of pyrido[2,3-d]pyrimidinederivatives was accomplished in good yields via the three-component reaction of aldehydes, alkyl nitriles and aminopyrimidines in water in the presence of triethylbenzylammonium chloride (TEBAC). The structures of these compounds were characterized by elemental analysis, IR and 1H NMR spectra and further confirmed by single crystal X-ray diffraction
在三乙基苄基氯化铵(TEBAC)存在下,通过醛,烷基腈和氨基嘧啶的三组分反应,可以快速,简便地合成吡啶并[2,3- d ]嘧啶衍生物。这些化合物的结构通过元素分析,IR和1 H NMR光谱进行表征,并通过单晶X射线衍射分析进一步证实。
A Clean Procedure for Synthesis of Pyrido[d]Pyrimidine Derivatives Under Solvent-Free Conditions Catalyzed by ZrO2 Nanoparticles
作者:Shahrzad Abdolmohammadi、Saeed Balalaie
DOI:10.2174/138620712800194486
日期:2012.4.1
A simple one-pot method for the preparation of 7-amino-2,4-dioxo-5-aryl-1,2,3,4-tetrahydropyrido[2,3-
d]pyrimidine-6-carbonitriles 4 from aromatic aldehydes, malononitrile and 4(6)-aminouracil in the presence of ZrO2
nanoparticles (ZrO2 NPs) as an efficient heterogeneous catalyst is described. The procedure has the advantages of high
yields (86-97%), short reaction time (2h) and an environmentally friendly specificity....
A greener approach for the synthesis of pyrido[2,3‐
<i>d</i>
]pyrimidine derivatives in glycerol under microwave heating
作者:Luan A. Martinho、Carlos Kleber Z. Andrade
DOI:10.1002/jhet.4483
日期:2022.8
Herein, we report the multicomponent synthesis of pyrido[2,3-d]pyrimidine derivatives from 6-aminouracil, aromatic aldehydes, and malononitrile in glycerol as a green solvent under microwave heating. This methodology shows several advantages: catalyst-free synthesis, up to 90% yield, operational simplicity, short reaction times, easy work-up procedure, and a greener approach compared with other methods
在此,我们报道了在微波加热下以甘油为绿色溶剂,以 6-氨基尿嘧啶、芳香醛和丙二腈为原料,合成吡啶并[2,3 - d ]嘧啶衍生物的多组分方法。与文献中报道的其他方法相比,该方法显示出几个优点:无催化剂合成、高达 90% 的产率、操作简单、反应时间短、后处理程序简单以及更环保的方法。
An expeditious one-pot synthesis of pyrido[2,3-d]pyrimidines using Fe3O4–ZnO–NH2–PW12O40 nanocatalyst
An efficient protocol for the facile synthesis of a series of pyrido[2,3-d]pyrimidine derivatives has been developed applying Fe3O4–ZnO–NH2–PW12O40 nanocatalyst in water. This novel method has the benefits of operational simplicity, green aspects by avoiding toxic solvents and high to excellent yields of products. Fe3O4–ZnO–NH2–PW12O40 was synthesized and characterized by Fourier transform infrared
使用 Fe3O4–ZnO–NH2–PW12O40 纳米催化剂在水中轻松合成一系列吡啶并 [2,3-d] 嘧啶衍生物的有效方案已被开发。这种新方法具有操作简单、绿色环保、避免使用有毒溶剂以及产品收率高的优点。 –ZnO–NH2–PW12O40 被合成并通过傅里叶变换红外、X 射线衍射、振动样品磁强计、扫描电子显微镜、能量色散 X 射线光谱和透射电子显微镜分析表征。纳米催化剂很容易通过外部磁铁从反应混合物中分离和回收。
Shi, Daqing; Niu, Lihui; Zhuang, Qiya, Journal of Chemical Research, 2005, # 10, p. 648 - 650