55718-51-9Relevant academic research and scientific papers
Study on one-pot biginelli-like synthesis of pyrazolo[3,4-d]pyrimidines in bronsted acidic ionic liquid under sonication and its mechanism
Thummar, Bhautik B.,Tarpada, Umesh P.,Raval, Dipak K.
, p. 1740 - 1746 (2014)
Pyrazolo[3,4-d]pyrimidine derivatives were synthesized using ionic liquid, 1-butylimidazolium tetrafluoroborate, under ultrasound irradiation at ambient condition without any added catalyst. Mechanistic pathway based on the catalytic role of ionic liquid has been proposed. This method offers the advantages of simple procedure, milder reaction condition, easier workup and improved yield over the conventional method. The ionic liquid could be recycled at least three times with marked retention in its activity.
An efficient synthesis of 4,5-diaryl-3,4-dihydropyrimidin-2(1: H)-one via a cesium carbonate-promoted direct condensation of 1-aryl-2-propanone with 1,1'-(arylmethylene)diurea
Deng, Wei,Guo, Yi-Cong,Rao, Weidong,Shen, Zhi-Liang,Song, Xuan-Di,Xu, Haiyan
, p. 30062 - 30068 (2020/10/26)
An efficient method for the synthesis of 4,5-diaryl-3,4-dihydropyrimidin-2(1H)-one by using 1,1'-(arylmethylene)diurea and 1-aryl-2-propanone as substrates was developed. The reactions proceeded efficiently in the presence of Cs2CO3 to give the desired pr
Biginelli reaction via bis-ureide intermediate in low melting mixture
Mahajan, Hitesh,Jamwal, Babita,Paul, Satya
, p. 585 - 593 (2019/09/30)
This paper deals with the study of mechanism of the Biginelli reaction using low melting mixture as solvent and catalyst. The catalytic effect of low melting mixture and the reaction mechanism is discussed on the basis of nuclear magnetic resonance (NMR)
Nanosilica-bonded N-(propylsulfonyl) piperazine-N-sulfamic acid as recyclable catalyst for synthesis of 1,1′-(arylmethylene) diureas and 1,3,5-triazinane-2,4-dithiones
Rezaee, Parizad,Davarpanah, Jamal
, p. 6815 - 6830 (2016/08/25)
Nanosilica-bonded N-(propylsulfonyl) piperazine-N-sulfamic acid was easily prepared by functionalizing silica nanoparticles and characterized by thermogravimetric analysis, scanning electron microscopy, infrared (IR) spectroscopy, elemental analyses, and
Eco-efficiency and scalable synthesis of bisamides in deep eutectic solvent
Azizi, Najmedin,Alipour, Masoumeh
, p. 268 - 271 (2015/03/18)
Solvents define a major part of the environmental performance of processes in chemical industry and also impact on cost, safety and health issues. In order to minimize the environmental impact resulting from the use of volatile organic solvents in chemica
