A novel poly(vinyl chloride)-supported Pd complex was found to be a highly active catalyst for the Heck and Sonogashira reactions of aryl halides under aerobic conditions.The complex is thermally stable,and can be eas...A novel poly(vinyl chloride)-supported Pd complex was found to be a highly active catalyst for the Heck and Sonogashira reactions of aryl halides under aerobic conditions.The complex is thermally stable,and can be easily recovered and reused.The catalyst was recycled for the Heck and Sonogashira reactions for five runs without appreciable loss of its catalytic activity,and with negligible metal leaching.展开更多
The palladium-salen complex palladium(Ⅱ) N,N'-bis{[5-(triphenylphosphonium)-methyl]salicylidene}-1,2-ethanediamine chloride was found to be a highly active catalyst for the copper- and solvent-free coupling react...The palladium-salen complex palladium(Ⅱ) N,N'-bis{[5-(triphenylphosphonium)-methyl]salicylidene}-1,2-ethanediamine chloride was found to be a highly active catalyst for the copper- and solvent-free coupling reaction of terminal alkynes with different acyl chlorides in the presence of triethylamine as base,giving excellent ynones under aerobic conditions.展开更多
A simple, green, and efficient synthesis protocol for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones using boehmite nanoparticles as catalyst was developed.It did not use any toxic metal catalysts or corrosive acid...A simple, green, and efficient synthesis protocol for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones using boehmite nanoparticles as catalyst was developed.It did not use any toxic metal catalysts or corrosive acidic reagents.The method gave good to excellent yields and has short reaction time, operational simplicity, and a recyclable catalyst.展开更多
This letter describes a simple and efficient synthesis of 3-（cyclohexylamino）-7-hydroxy-2-arylimi- dazo[1,2-c]pyrimidin-5（6H）-one via a one-pot three-component reaction of cyclohexyl isocyanide, an aldehyde, and 4...This letter describes a simple and efficient synthesis of 3-（cyclohexylamino）-7-hydroxy-2-arylimi- dazo[1,2-c]pyrimidin-5（6H）-one via a one-pot three-component reaction of cyclohexyl isocyanide, an aldehyde, and 4-amiopyrimidine-2,6-diol in the presence of a catalytic amount of SSA.展开更多
基金the financial support of the Research Council of Shahrood University of Technology
文摘A novel poly(vinyl chloride)-supported Pd complex was found to be a highly active catalyst for the Heck and Sonogashira reactions of aryl halides under aerobic conditions.The complex is thermally stable,and can be easily recovered and reused.The catalyst was recycled for the Heck and Sonogashira reactions for five runs without appreciable loss of its catalytic activity,and with negligible metal leaching.
基金the Research Council of Shahrood University of Technology for the support of this work
文摘The palladium-salen complex palladium(Ⅱ) N,N'-bis{[5-(triphenylphosphonium)-methyl]salicylidene}-1,2-ethanediamine chloride was found to be a highly active catalyst for the copper- and solvent-free coupling reaction of terminal alkynes with different acyl chlorides in the presence of triethylamine as base,giving excellent ynones under aerobic conditions.
基金the Research Council of Shahrood University of Technology for the financial support
文摘A simple, green, and efficient synthesis protocol for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones using boehmite nanoparticles as catalyst was developed.It did not use any toxic metal catalysts or corrosive acidic reagents.The method gave good to excellent yields and has short reaction time, operational simplicity, and a recyclable catalyst.
基金the Research Council of Shahrood University of Technology for the financial support of this work
文摘This letter describes a simple and efficient synthesis of 3-（cyclohexylamino）-7-hydroxy-2-arylimi- dazo[1,2-c]pyrimidin-5（6H）-one via a one-pot three-component reaction of cyclohexyl isocyanide, an aldehyde, and 4-amiopyrimidine-2,6-diol in the presence of a catalytic amount of SSA.
