Chemo-enzymatic, regioselective synthesis of dihydropyrimidinone-fused
β
-amino alcohols and their anti-inflammatory and antioxidant activity evaluation
An Efficient One-Pot Synthesis of 3,4-Dihydropyrimidin-2-(<i>1H</i>)-Ones/Thiones Catalysed by 2-Thienylboronic Acid
作者:Zhenfang Fu、Tianhua Shen、Zhiping Du、Zhiguo Qiao、Qingbao Song
DOI:10.3184/174751912x13318375421203
日期:2012.4
A simple efficient one-pot three-component condensation for synthesis of 3,4-dihydropyrimidin-2-(1H)-ones/thiones in good to excellent yields using 2-thienylboronic acid as a catalyst was described.
Substituted dihydropyrimidone derivatives were synthesized through one pot multicomponent Zn(ClO4)2catalysed Biginelli reactions between differently substituted aromatic aldehydes, urea and ethylacetoacetate.
Zn salen complex supported on MnCoFe2O4(MCF) magnetic nanoparticles as a catalyst in the synthesis of 3,4-dihydropyrimidin-2 (1H)-ones/thiones (Biginelli-like reaction)
Biginelli-like reaction via three component reaction ethyl acetoacetate or dimedone/ or barbituric acid, urea/ or thiourea and different aromatic aldehydes. The structure of new prepared 3,4-dihydropyrimidin-2 (1H)-ones/thions was properly identified by FT-IR, 1H- and 13C-NMR spectroscopy data. Some important advantages of this procedure include easy separation of catalyst by a magnet, short reaction times
在目前的工作中,一种新型的 MnCoFe 2 O 4磁性纳米粒子负载的 Zn salen 配合物,MnCoFe 2 O 4 @SiO 2 -Pr-NH-SA&Zn (MCF@SiO 2-Pr-NH-SA&Zn) 易于通过清洁方法合成,并通过傅里叶变换红外光谱 (FT-IR)、X 射线衍射、场发射扫描电子显微镜、能量色散 X 射线分析仪、透射电子进行充分表征显微镜、电感耦合等离子体发射光谱法、热重和振动样品磁力计分析。此外,通过乙酰乙酸乙酯或双甲酮/或巴比妥酸、脲/或硫脲和不同芳香醛的三组分反应,在类 Biginelli 反应中研究了所制备的复合物作为非均相催化剂的活性。新制备的 3,4-dihydropyrimidin-2 (1H)-ones/thions 的结构被 FT-IR、1 H-和13正确鉴定C-NMR光谱数据。该程序的一些重要优点包括通过磁体轻松分离催化剂、反应时间短、产品产率高、无溶剂、易于后处理和在所用模型反应的