In search of environmentally benign compounds with high biological activity, low toxicity and low resistance, 8 novel benzoyl hydrazines containing pyrazole were designed and synthesized. All compounds were characteri...In search of environmentally benign compounds with high biological activity, low toxicity and low resistance, 8 novel benzoyl hydrazines containing pyrazole were designed and synthesized. All compounds were characterized by I H NMR spectra and HRMS. The preliminary results of biological activity assessment indicated that most of title compounds exhibited certain insecticidal activities against M）,thimna separata Walker at 200 mg L-1 but excellent fungicidal activities against six fungus at 50 mg L-1, which were better than the control.展开更多
In order to prevent fire even explosion accident caused by hydrazines in chemical industry,the adiabatic stability of benzoyl hydrazine and p-nitro phenyl hydrazine are tested by Accelerating Rate Calorimeter(ARC).The...In order to prevent fire even explosion accident caused by hydrazines in chemical industry,the adiabatic stability of benzoyl hydrazine and p-nitro phenyl hydrazine are tested by Accelerating Rate Calorimeter(ARC).Then pseudo-inverse matrix method is used to calculate dynamics parameters of the two samples respectively.Finally,the measured data are modified by considering of thermal inertia factor of ARC.The results show that the initial exothermic temperature for benzoyl hydrazine is 141.16℃.with the maximum temperature being 364.50℃ and the time to maxinmm self-heating rate is 1061.11 min.But the initial exothermic temperature for p-Nitro phenyl hydrazine is 88.36℃,with the maximum temperature being 596.38℃ and the time to maximum self-heating rate is 314.67 min.It can be seen that p-nitro phenyl hydrazine is easier to explode and the explosion is more powerful.展开更多
4-nitro benzoyl acylhydrazines are synthesized in ice bath with substituted hydrazine and 4-nitrobenzoic chloride as raw materials. At the same time ,4-nitrobenzoic acyl azo compounds are synthesized firstly with the ...4-nitro benzoyl acylhydrazines are synthesized in ice bath with substituted hydrazine and 4-nitrobenzoic chloride as raw materials. At the same time ,4-nitrobenzoic acyl azo compounds are synthesized firstly with the oxidation system NBS/Pyridine. The products are characterized by elementary analysis, IR and 1HNMR, The yields of products are about from 80% to 92%.展开更多
文摘In search of environmentally benign compounds with high biological activity, low toxicity and low resistance, 8 novel benzoyl hydrazines containing pyrazole were designed and synthesized. All compounds were characterized by I H NMR spectra and HRMS. The preliminary results of biological activity assessment indicated that most of title compounds exhibited certain insecticidal activities against M）,thimna separata Walker at 200 mg L-1 but excellent fungicidal activities against six fungus at 50 mg L-1, which were better than the control.
文摘In order to prevent fire even explosion accident caused by hydrazines in chemical industry,the adiabatic stability of benzoyl hydrazine and p-nitro phenyl hydrazine are tested by Accelerating Rate Calorimeter(ARC).Then pseudo-inverse matrix method is used to calculate dynamics parameters of the two samples respectively.Finally,the measured data are modified by considering of thermal inertia factor of ARC.The results show that the initial exothermic temperature for benzoyl hydrazine is 141.16℃.with the maximum temperature being 364.50℃ and the time to maxinmm self-heating rate is 1061.11 min.But the initial exothermic temperature for p-Nitro phenyl hydrazine is 88.36℃,with the maximum temperature being 596.38℃ and the time to maximum self-heating rate is 314.67 min.It can be seen that p-nitro phenyl hydrazine is easier to explode and the explosion is more powerful.
文摘4-nitro benzoyl acylhydrazines are synthesized in ice bath with substituted hydrazine and 4-nitrobenzoic chloride as raw materials. At the same time ,4-nitrobenzoic acyl azo compounds are synthesized firstly with the oxidation system NBS/Pyridine. The products are characterized by elementary analysis, IR and 1HNMR, The yields of products are about from 80% to 92%.
