3,5-dimethyl phenyl isocyanate was prepared by the method of trichloromethyl chloroformate in 70% yield.New compound N,N′-di-(3,5-dimethyl)phenyl-3,6-dimethyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboamide was synthe...3,5-dimethyl phenyl isocyanate was prepared by the method of trichloromethyl chloroformate in 70% yield.New compound N,N′-di-(3,5-dimethyl)phenyl-3,6-dimethyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboamide was synthesized by reacting 3,5-dimethyl phenyl isocyanate and 3,6-dimethyl-1,6-dihydro-1,2,4,5-tetrazine.Its post-disposal method had been improved.yield being 30.8%.Byproduct 1,3-bis-(3,5-dimethyphenyl)-1,3-diazetidine-2,4-dione have not been reported,too.Their structures were conformed by IR, 1HNMR and elemental analysis.展开更多
Two new phloroglucinol glycosides, 2,6-dihydroxy-3,5-dimethyl-1-isobutyrylbenzene-4-O-beta-D-glucoside and 2,6-dihydroxy-3,5-dimethyl-1-(2-methylbutyryl) benzene-4-O-beta-D-glucoside were isolated from Hypericum japon...Two new phloroglucinol glycosides, 2,6-dihydroxy-3,5-dimethyl-1-isobutyrylbenzene-4-O-beta-D-glucoside and 2,6-dihydroxy-3,5-dimethyl-1-(2-methylbutyryl) benzene-4-O-beta-D-glucoside were isolated from Hypericum japonicum. Their structures were determined by spectroscopic and chemical methods.展开更多
文摘3,5-dimethyl phenyl isocyanate was prepared by the method of trichloromethyl chloroformate in 70% yield.New compound N,N′-di-(3,5-dimethyl)phenyl-3,6-dimethyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboamide was synthesized by reacting 3,5-dimethyl phenyl isocyanate and 3,6-dimethyl-1,6-dihydro-1,2,4,5-tetrazine.Its post-disposal method had been improved.yield being 30.8%.Byproduct 1,3-bis-(3,5-dimethyphenyl)-1,3-diazetidine-2,4-dione have not been reported,too.Their structures were conformed by IR, 1HNMR and elemental analysis.
文摘Two new phloroglucinol glycosides, 2,6-dihydroxy-3,5-dimethyl-1-isobutyrylbenzene-4-O-beta-D-glucoside and 2,6-dihydroxy-3,5-dimethyl-1-(2-methylbutyryl) benzene-4-O-beta-D-glucoside were isolated from Hypericum japonicum. Their structures were determined by spectroscopic and chemical methods.
