Eight new 3alkoxy6(4methylphenyl)pyridazines which contain a benzene ring,an alkoxyl group of different length were synthesized through the crosscoupling reaction of 3halo6alkoxypyridazines with 4met...Eight new 3alkoxy6(4methylphenyl)pyridazines which contain a benzene ring,an alkoxyl group of different length were synthesized through the crosscoupling reaction of 3halo6alkoxypyridazines with 4methylphenylborate in the presence of palladium catalyst.Their mesogenic behaviors were studied through DSC and optical microscope.The length of the terminal chain can affect the transition and clearing point temperatures of the complexes,but has little influence on the temperature range of mesophases.展开更多
From α acetylthioformanilide and thio semicarbazide eight heterocyclic compounds of substituted phenylamino 6 metyl 1,2,4 triazine 3 thiones were synthesized.Their structures were confirmed by elemental analysis, 1HN...From α acetylthioformanilide and thio semicarbazide eight heterocyclic compounds of substituted phenylamino 6 metyl 1,2,4 triazine 3 thiones were synthesized.Their structures were confirmed by elemental analysis, 1HNMR,IR and MS.展开更多
文摘Eight new 3alkoxy6(4methylphenyl)pyridazines which contain a benzene ring,an alkoxyl group of different length were synthesized through the crosscoupling reaction of 3halo6alkoxypyridazines with 4methylphenylborate in the presence of palladium catalyst.Their mesogenic behaviors were studied through DSC and optical microscope.The length of the terminal chain can affect the transition and clearing point temperatures of the complexes,but has little influence on the temperature range of mesophases.
文摘From α acetylthioformanilide and thio semicarbazide eight heterocyclic compounds of substituted phenylamino 6 metyl 1,2,4 triazine 3 thiones were synthesized.Their structures were confirmed by elemental analysis, 1HNMR,IR and MS.
