43114-35-8Relevant articles and documents
Method for synthesizing 1,4-dihydropyridines derivatives
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Paragraph 0150; 0151, (2017/10/27)
The invention relates to a method for synthesizing 1,4-dihydropyridines derivatives. According to the method, a fluorescence-marked nonmetal organic boron-nitrogen lewis acid-alkali dual-functional complex is used as a catalyst, so that the pollution of heavy metals is effectively avoided; the catalyst can be recycled, and a residual amount of the catalyst in a product can be rapidly detected; and the source of raw materials is wide, the target yield is close to 100 percent, the reaction process is a homogenous reaction, and a product is obtained by virtue of chromatographic separation. The whole reaction system can be directly amplified, and the industrialization prospect is significant.
A Simple and Efficient One-pot Synthesis of 1,4-dihydropyridines Using Nano-WO3-supported Sulfonic Acid as an Heterogeneous Catalyst under Solvent-free Conditions
Bitaraf, Mehrnoosh,Amoozadeh, Ali,Otokesh, Somayeh
, p. 336 - 344 (2016/05/09)
Nano-tungsten trioxide-supported sulfonic acid (n-WSA) was found to be an effective heterogeneous catalyst for the one-pot reaction of aromatic aldehydes, β-dicarbonyl compounds and ammonium acetate to afford 1,4-dihydropyridine derivatives in good to excellent yields. The other main advantages of the present method are short reaction times, simple workup, ease in purification and environmentally benign methodology. The reaction conditions were optimized employing Response Surface Method technique (Central Composite Design (CCD)) which is economically considerable because of the minimum number of experiments required to evaluate the effects of multiple parameters on the response.
Ultrasound-mediated, uranyl nitrate hexahydrate-catalyzed synthesis of 1,4-dihydropyridines under mild conditions
Palakshi Reddy,Sarveswari,Vijayakumar
, p. 6877 - 6883 (2015/08/18)
Abstract Synthesis of 1,4-dihydropyridines by three-component condensation reaction of aldehyde, 1,3-dicarbonyl compounds, and ammonium acetate have been found to be efficiently catalyzed by uranyl nitrate hexahydrate [UO2(NO3)2 ·6H2O] at room temperature under ultrasound irradiation. This novel synthetic method offers the advantages of high yields, short reaction times, simplicity, and easy workup compared to the conventional methods reported in the literature.