The reaction of 2'-hydroxychalcones with I_2-H_2SO_4-DMSO system has been studied. The results obtained by us are entirely different from those reported in the literature. The mechanism of this reaction has also b...The reaction of 2'-hydroxychalcones with I_2-H_2SO_4-DMSO system has been studied. The results obtained by us are entirely different from those reported in the literature. The mechanism of this reaction has also been investigated.展开更多
A facile one-pot strategy for the synthesis ofα,β-unsaturated amides via an I_(2)/t-butylhydroperoxide(TBHP)-mediated oxidative system has been reported.The methodology achieves efficient construction of a series of...A facile one-pot strategy for the synthesis ofα,β-unsaturated amides via an I_(2)/t-butylhydroperoxide(TBHP)-mediated oxidative system has been reported.The methodology achieves efficient construction of a series ofα,β-unsaturated amides through oxidative coupling of allylbenzenes with N,N-dialkylformamides under mild conditions.Notably,N,N-dialkylformamides serve as both solvents and reactants in this protocol,significantly enhancing the atom economy of transformation.展开更多
The ketalization of cyclohexanone with ethylene glycol catalyzed by I2 was studied.The effects of reaction time,reactant ratio,catalyst amount and the amount of water-carrying agent on the yield of cyclohexanone ethyl...The ketalization of cyclohexanone with ethylene glycol catalyzed by I2 was studied.The effects of reaction time,reactant ratio,catalyst amount and the amount of water-carrying agent on the yield of cyclohexanone ethylene glycol ketal was investigated.The results showed that the most suitable condition for the reaction were as follows:ethylene glyco:cyclohexanone molar ratio 1.2,molar ratio of catalyst to reactant 0.005%,cyclohexane as the water-carrying agent 6 ml,reaction time 30 min.The yield was up to 94.3%.展开更多
文摘The reaction of 2'-hydroxychalcones with I_2-H_2SO_4-DMSO system has been studied. The results obtained by us are entirely different from those reported in the literature. The mechanism of this reaction has also been investigated.
文摘A facile one-pot strategy for the synthesis ofα,β-unsaturated amides via an I_(2)/t-butylhydroperoxide(TBHP)-mediated oxidative system has been reported.The methodology achieves efficient construction of a series ofα,β-unsaturated amides through oxidative coupling of allylbenzenes with N,N-dialkylformamides under mild conditions.Notably,N,N-dialkylformamides serve as both solvents and reactants in this protocol,significantly enhancing the atom economy of transformation.
文摘The ketalization of cyclohexanone with ethylene glycol catalyzed by I2 was studied.The effects of reaction time,reactant ratio,catalyst amount and the amount of water-carrying agent on the yield of cyclohexanone ethylene glycol ketal was investigated.The results showed that the most suitable condition for the reaction were as follows:ethylene glyco:cyclohexanone molar ratio 1.2,molar ratio of catalyst to reactant 0.005%,cyclohexane as the water-carrying agent 6 ml,reaction time 30 min.The yield was up to 94.3%.
