Introduction of taurine (2-aminoethanesulfonic acid) as a green bio-organic catalyst for the promotion of organic reactions under green conditions
作者:Farhad Shirini、Nader Daneshvar
DOI:10.1039/c6ra15432h
日期:——
derivatives are simply prepared via a three-component reaction in the presence of taurine as the catalyst. All these reactions are performed in water, a green solvent. The advantages of using of taurine as the catalyst are it is environmentally friendly, low cost, commercially available, easy to separate from the reaction mixture, and has high reusability. Use of this catalyst results in acceptable reaction
Nickel nanoparticles: A highly efficient catalyst for one pot synthesis of tetraketones and biscoumarins
作者:JITENDER M. KHURANA、KANIKA VIJ
DOI:10.1007/s12039-012-0275-8
日期:2012.7
nickel nanoparticles have been used as a catalyst for promoting the synthesis of 2,2′-aryl-methylene bis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one), 2,2′-aryl-methylene bis(3-hydroxy-2-cyclohexene-1-one), also known as tetraketones, and biscoumarins via Knoevenagel condensation followed by rapid Michael addition. A novel and highly efficient PVP stabilized Ni nanoparticle catalysed synthesis of tetraketones
efficient, simple, and ecologically benign method for their preparation in the presence of the novel catalytic agent is still in great demand. In the present report, direct crystals of 2,2′-(arylmethylene)bis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) (a tetraketone) were obtained via a simple procedure using 2-aminopyrazine as a catalyst. The prepared compound shows significant antioxidant checked by different
water plays a significant role in many reactions. Another aspect of green chemistry is the development of reusable and heterogeneous catalysts under environmentally friendly conditions. From the viewpoint of green chemistry, good recovery and reusability of the catalyst are highly preferable. These concepts are at the center of chemical activity, and research on high selectivity is the driving force