An environmental benign procedure for synthesis of 2-(N-formyl)-5-aryl/aryloxymethyl-1,3,4-thiadiazoles has been developed by reaction of 2-amino-5-aryl/aryloxymethyl-1,3,4-thiadiazoles with formic acid in PEG-400.The...An environmental benign procedure for synthesis of 2-(N-formyl)-5-aryl/aryloxymethyl-1,3,4-thiadiazoles has been developed by reaction of 2-amino-5-aryl/aryloxymethyl-1,3,4-thiadiazoles with formic acid in PEG-400.The key advantages of this protocol are the shorter reaction time,higher yields,lower cost,simple workup,and environment-friendly compared to conventional organic solvent reaction.The present method does not involve any hazardous organic solvent or catalyst.展开更多
A new series of imidazole-containing 1, 5-benzodiazepines have been synthesized by the condensation of chalcones with o- phenylenediamine using piperidine in polyethylene glycol (PEG-400) as an efficient and green r...A new series of imidazole-containing 1, 5-benzodiazepines have been synthesized by the condensation of chalcones with o- phenylenediamine using piperidine in polyethylene glycol (PEG-400) as an efficient and green reaction solvent. The advantages of this protocol are environmental friendliness, easy work-up, high yields, mild reaction condition and avoidance of expensive catalyst. Furthermore, newly synthesized compounds were evaluated for their antimicrobial activity.展开更多
基金support from the Natural Science Foundation of Gansu Province(No.3ZS061- A25-019)the Scientific Research fund of Gansu Provincial Education Department(No.0601-25)
文摘An environmental benign procedure for synthesis of 2-(N-formyl)-5-aryl/aryloxymethyl-1,3,4-thiadiazoles has been developed by reaction of 2-amino-5-aryl/aryloxymethyl-1,3,4-thiadiazoles with formic acid in PEG-400.The key advantages of this protocol are the shorter reaction time,higher yields,lower cost,simple workup,and environment-friendly compared to conventional organic solvent reaction.The present method does not involve any hazardous organic solvent or catalyst.
文摘A new series of imidazole-containing 1, 5-benzodiazepines have been synthesized by the condensation of chalcones with o- phenylenediamine using piperidine in polyethylene glycol (PEG-400) as an efficient and green reaction solvent. The advantages of this protocol are environmental friendliness, easy work-up, high yields, mild reaction condition and avoidance of expensive catalyst. Furthermore, newly synthesized compounds were evaluated for their antimicrobial activity.