Cov txheej txheem rau Kev Npaj Benzimidazoles Yog xav tau kev lim dej ntxiv, los ntawm recrystallization nws tau yaj hauv EtOH (10 mL) thiab tom qab ntawd nchuav rau hauv dej khov (30 mL). Cov khoom ntshiab yog lim, ntxuav nrog dej khov, thiab tom qab ziab.
Nws yog ib qho hnyav hauv kev sib txuas ntawm benzimidazole?
Ib yam li ntawd, cov tshuaj tiv thaiv tau ua nyob rau hauv cov kuab tshuaj sib txawv xws li CH3CN, MeOH, CHCl3, ether , thiab DMF; CHCl3 tau pom tias yog cov kuab tshuaj haum tshaj plaws uas muab benzimidazole nrog 40% tawm los.
Koj ua li cas benzimidazole recrystallization?
Lim tawm cov khoom siv roj ntsha benzimidazole los ntawm kev siv lub twj tso kua mis, ntxuav nrog dej txias, ntws zoo thiab ntxuav dua nrog 25 ml ntawm dej txias. Recrystallisation: Dissolve cov khoom synthesized nyob rau hauv 400 ml ntawm boiling dej, ntxiv 2 g ntawm decolourising carbon thiab zom rau 15 feeb
Cov kuab tshuaj twg yog siv los ua kom rov ua kom muaj zog hauv kev sib txuas ntawm Benztriazole?
Benzotriazole tuaj yeem npaj los ntawm kev kho mob o-phenylenediamine nrog nitrous acid(liberated thaum lub sij hawm cov tshuaj tiv thaiv ntawm sodium nitrite thiab acetic acid) los tsim mono-diazonium ntsev uas ua raws li spontaneous intramolecular cyclization Cov tshuaj tiv thaiv los tsim benzotriazole.
Tus catalyst yog siv rau kev sib txuas ntawm para benzimidazole?
Synthesis ntawm benzimidazoles tau tsim los ntawm o-phenylenediamine nrog aldehydes siv boric acid tus catalyst muaj txiaj ntsig hauv cov tshuaj tiv thaiv me me hauv cov xov xwm aqueous.
