Six new N4-[bi-（4-fluorophenyl）-methyl]-piperazine thiosemicarbazones 3a-f have been prepared starting from [bi-（4-fluorophenyl）-methyl]-piperazine in solvent-free condition under microwave irradiation with excell...Six new N4-[bi-（4-fluorophenyl）-methyl]-piperazine thiosemicarbazones 3a-f have been prepared starting from [bi-（4-fluorophenyl）-methyl]-piperazine in solvent-free condition under microwave irradiation with excellent yields. Their structures have been determined by elemental analysis, IR, MS and 1H NMR data.展开更多
Based on the one carbon unit transfer reaction of tetrahydrofolate coenzymes, hydratropic aldehyde was synthesized successfully by using benzimidazolium salt as tetrahydrofolate coenzyme model at formic acid oxidation...Based on the one carbon unit transfer reaction of tetrahydrofolate coenzymes, hydratropic aldehyde was synthesized successfully by using benzimidazolium salt as tetrahydrofolate coenzyme model at formic acid oxidation level and Grignard reagent as a nucleophile to which one carbon unit was transfered. A novel method for the preparation of hydratropic aldehyde was provided. The mechanism for the addition hydrolysis reaction of benzimidazolium salt with Grignard reagent and the effects of reaction condition on the yield are discussed.展开更多
Lanthanide triflates are stable in water. It is possible for lanthanides to undergo many organic reactions in environmentally friendly solvents. This makes lanthanides very promising in the field of green chemistry. T...Lanthanide triflates are stable in water. It is possible for lanthanides to undergo many organic reactions in environmentally friendly solvents. This makes lanthanides very promising in the field of green chemistry. This review describes the recent development of the lanthanide-catalyzed organic reactions in protic solvents. Those reac-tions include Diels-Alder, Aldol, Allylation, acetalization, pericyclization, radical reactions as well as some newly-developed lanthnides-based catalysts.展开更多
基金Natural Foundation of Southwest University for Nationalities(No.234688).
文摘Six new N4-[bi-（4-fluorophenyl）-methyl]-piperazine thiosemicarbazones 3a-f have been prepared starting from [bi-（4-fluorophenyl）-methyl]-piperazine in solvent-free condition under microwave irradiation with excellent yields. Their structures have been determined by elemental analysis, IR, MS and 1H NMR data.
文摘Based on the one carbon unit transfer reaction of tetrahydrofolate coenzymes, hydratropic aldehyde was synthesized successfully by using benzimidazolium salt as tetrahydrofolate coenzyme model at formic acid oxidation level and Grignard reagent as a nucleophile to which one carbon unit was transfered. A novel method for the preparation of hydratropic aldehyde was provided. The mechanism for the addition hydrolysis reaction of benzimidazolium salt with Grignard reagent and the effects of reaction condition on the yield are discussed.
基金This work was supported by the National Natural Science Foundation of China (Grant No. 29928004).
文摘Lanthanide triflates are stable in water. It is possible for lanthanides to undergo many organic reactions in environmentally friendly solvents. This makes lanthanides very promising in the field of green chemistry. This review describes the recent development of the lanthanide-catalyzed organic reactions in protic solvents. Those reac-tions include Diels-Alder, Aldol, Allylation, acetalization, pericyclization, radical reactions as well as some newly-developed lanthnides-based catalysts.
