Adipic-1′,6′-bis(4-halogenpheny1 hydrazine) has been synthesized in ice bath with adipic chloride and 4-bromophenyl hydrazine made by ourselves.At the same time,adipic-1′,6′-bis(4-halogenpheny1 hydrazine) is synth...Adipic-1′,6′-bis(4-halogenpheny1 hydrazine) has been synthesized in ice bath with adipic chloride and 4-bromophenyl hydrazine made by ourselves.At the same time,adipic-1′,6′-bis(4-halogenpheny1 hydrazine) is synthesized firstly with oxidation system NaBrO3/H2SO4.The products are confirmed by elemental analysis,IR and 1HNMR.The yields of adipic-1′,6′-bis(4-halogenpheny1 hydrazine) is 83-92%.展开更多
1,2-Bis(4-hydroxy-3-methoxyphenyl)ethane,a by-product formed from synthesis reaction of vanillyl nonanoate,is separated by silica-gel column chromatography and characterized by 1HNMR,13CNMR and MS.
In this paper,the dibenzo-14-crown-4(DB14C4,abbreviation of Dibenzo-14-crown-4) is synthesized by the ultrasonic synthesis method when use 1,3-dibromopropane and pyrocatechol as starting material,dimethyl sulfoxide(DM...In this paper,the dibenzo-14-crown-4(DB14C4,abbreviation of Dibenzo-14-crown-4) is synthesized by the ultrasonic synthesis method when use 1,3-dibromopropane and pyrocatechol as starting material,dimethyl sulfoxide(DMSO) as solvent,and lithium hydroxide as catalyst and template reagent.The experiment result shows that the new synthetic method has some properties such as simple operation(no protection of nitrogen gas),short reaction time(50min),high yield(42.2%),etc.and it is a extensive new method for synthesis of crown.展开更多
文摘Adipic-1′,6′-bis(4-halogenpheny1 hydrazine) has been synthesized in ice bath with adipic chloride and 4-bromophenyl hydrazine made by ourselves.At the same time,adipic-1′,6′-bis(4-halogenpheny1 hydrazine) is synthesized firstly with oxidation system NaBrO3/H2SO4.The products are confirmed by elemental analysis,IR and 1HNMR.The yields of adipic-1′,6′-bis(4-halogenpheny1 hydrazine) is 83-92%.
文摘1,2-Bis(4-hydroxy-3-methoxyphenyl)ethane,a by-product formed from synthesis reaction of vanillyl nonanoate,is separated by silica-gel column chromatography and characterized by 1HNMR,13CNMR and MS.
文摘In this paper,the dibenzo-14-crown-4(DB14C4,abbreviation of Dibenzo-14-crown-4) is synthesized by the ultrasonic synthesis method when use 1,3-dibromopropane and pyrocatechol as starting material,dimethyl sulfoxide(DMSO) as solvent,and lithium hydroxide as catalyst and template reagent.The experiment result shows that the new synthetic method has some properties such as simple operation(no protection of nitrogen gas),short reaction time(50min),high yield(42.2%),etc.and it is a extensive new method for synthesis of crown.
