2-甲氧基苄亚基丙二腈 、 亚磷酸二乙酯 在
ionic tagged propyl amine immobilized on magnetic nanoparticles 作用下,
以
甲醇 为溶剂,
反应 3.0h,
以82%的产率得到diethyl (2,2-dicyano-1-(2-methoxyphenyl)ethyl)phosphonate
参考文献:
名称:
Novel Ionic Tagged Amine Anchored on Magnetic Nanoparticles: An Efficient and Magnetically Recyclable Catalyst for Phospha-Michael Addition
摘要:
Ionic tagged propyl amine immobilized on magnetic nanoparticles (MNPs) was synthesized and fully characterized. The novel catalyst (MNPs@PA-IL) was applied in phospha-Michael addition and gave the desired beta-phosphonomalonates in good yields. The MNPs supported catalyst with ionic tag could be readily recovered from the reaction mixture using an external magnet. Compared with ionic-free counterpart (MNPs@PA), MNPs@PA-IL present better catalytic activity. The proposed mechanism regarding the MNPs@PA-IL catalyzed phospha-Michael reaction was also discussed.
Tris(hydroxymethyl)aminomethane as an efficient organobase catalyst for the synthesis of β-phosphonomalonates
作者:Reddi Mohan Naidu Kalla、Il Kim
DOI:10.1016/j.tetlet.2016.12.035
日期:2017.2
Tris(hydroxymethyl)aminomethane (THAM) is a highly efficient and recyclable organobasecatalyst for the nucleophilic phosphonylation of benzylidene malononitrile under solvent-free conditions. This new catalytic methodology is applicable without a solvent, eco-friendly, economically viable, avoids conventional isolation procedures, and has a facile work-up procedure and wide scope. THAM is an inexpensive
Efficient, Solvent-Free, Multicomponent Method for Organic-Base-Catalyzed Synthesis of β-Phosphonomalonates
作者:Reddi Mohan Naidu Kalla、Huiju Park、Hye Ri Lee、Hongsuk Suh、Il Kim
DOI:10.1021/acscombsci.5b00109
日期:2015.11.9
An efficient, one-pot, di-n-butylamine-catalyzed, three-component synthesis of beta-phosphonomalonates has been developed. A wide range of substrates, including aromatic and fused aromatic aldehydes, were condensed with enolizable C-H activated compounds and dialkylphosphites to give the desired products in excellent yields. This method provides an eco-friendly alternative approach to rapid construction of a diversity-oriented library of beta-phosphonomalonates.
Heterogeneous reusable catalyst, ultrasound energy, and no solvent: a quick and green recipe for one-pot synthesis of β-phosphonomalononitriles at room temperature
作者:Bashir Ahmad Dar、Nalini Pandey、Snehil Singh、R.K. Bamezai、Meena Sharma、Ram A. Vishwakarma、Baldev Singh
DOI:10.1016/j.tetlet.2013.11.095
日期:2014.1
Clay-supported heteropolyacid catalyst has been prepared and investigated as a novel heterogeneous, reusable and efficient catalyst for the one-pot synthesis of beta-phosphonomalononitriles under ultrasound irradiation at room temperature. Compared with traditional methods, the present method is solvent-free, works under milder and cleaner conditions, furnishes products with higher purity and yields, needs shorter reaction time, easier work-up procedure, and generates less waste. No column purification is required and the products can be purified by simple crystallization. The catalyst can be easily recovered and reused several times without significant loss of its catalytic activity. The catalyst was characterized by scanning electron microscopy, X-ray powder diffraction, and thermal gravimetric, surface area, and elemental analyses. (C) 2013 Elsevier Ltd. All rights reserved.
Novel Ionic Tagged Amine Anchored on Magnetic Nanoparticles: An Efficient and Magnetically Recyclable Catalyst for Phospha-Michael Addition
作者:Zhifeng Li、Yuxiang Ni、Fangli Qiu、Anguo Ying、Songlin Xu、Yunlong Wang
DOI:10.1007/s10562-014-1342-1
日期:2014.11
Ionic tagged propyl amine immobilized on magnetic nanoparticles (MNPs) was synthesized and fully characterized. The novel catalyst (MNPs@PA-IL) was applied in phospha-Michael addition and gave the desired beta-phosphonomalonates in good yields. The MNPs supported catalyst with ionic tag could be readily recovered from the reaction mixture using an external magnet. Compared with ionic-free counterpart (MNPs@PA), MNPs@PA-IL present better catalytic activity. The proposed mechanism regarding the MNPs@PA-IL catalyzed phospha-Michael reaction was also discussed.