A powerful and environmentally benign method has been developed for the one-pot synthesis of 4-substituted-1,5-benzodiazepines via the three-component reaction of a series of aldehydes with dimedone and o-phenylenedia...A powerful and environmentally benign method has been developed for the one-pot synthesis of 4-substituted-1,5-benzodiazepines via the three-component reaction of a series of aldehydes with dimedone and o-phenylenediamine using [H-NMP][HSO_4] as a Brnsted acidic ionic liquid catalyst under solvent-free conditions. The key benefits of this new method over existing techniques include high yields, the use of a green catalyst, short reaction times and facile catalyst separation.展开更多
A novel method for determination of sulfide ion in water was described by screen-printed electrochemical sensor.The electrochemical behavior of N,N-dimethylphenylenediamine and catalytic oxidation of sulfide ion were ...A novel method for determination of sulfide ion in water was described by screen-printed electrochemical sensor.The electrochemical behavior of N,N-dimethylphenylenediamine and catalytic oxidation of sulfide ion were studied.There was an excellent linear response range from 8.0×10-7 to 6.5×10-4mol/L(R=0.997)for the detection of sulfide ion,with a detection limit of 3.0×10-7mol/L.The method is simple,rapid,cheap and accurate.展开更多
基金University of Kashan for supporting this work by Grant No: 159148/55
文摘A powerful and environmentally benign method has been developed for the one-pot synthesis of 4-substituted-1,5-benzodiazepines via the three-component reaction of a series of aldehydes with dimedone and o-phenylenediamine using [H-NMP][HSO_4] as a Brnsted acidic ionic liquid catalyst under solvent-free conditions. The key benefits of this new method over existing techniques include high yields, the use of a green catalyst, short reaction times and facile catalyst separation.
文摘A novel method for determination of sulfide ion in water was described by screen-printed electrochemical sensor.The electrochemical behavior of N,N-dimethylphenylenediamine and catalytic oxidation of sulfide ion were studied.There was an excellent linear response range from 8.0×10-7 to 6.5×10-4mol/L(R=0.997)for the detection of sulfide ion,with a detection limit of 3.0×10-7mol/L.The method is simple,rapid,cheap and accurate.