Hauv kev sim ob lub lis piam no, sulfanilamide (p-aminobenzenesulfonamide), thawj tiam sulfa tshuaj, yuav raug tsim los ntawm acetanilide. Cov tub ntxhais kawm yuav ua haujlwm ua khub los npaj cov tshuaj hauv ntau cov txheej txheem hluavtaws uas tau teev tseg hauv daim duab 4.1 hauv qab no. Acetanilide (1) yuav siv los ua cov khoom pib.
Dab tsi yog cov khoom pib rau kev sib txuas ntawm sulfonamide?
Sulfonyl chlorides tseem yog qhov kev xaiv zoo tshaj plaws los pib cov ntaub ntawv rau kev npaj sulfonamide derivatives. Ib txoj kev raug suav nrog dropwise ntxiv ntawm tosyl chloride 1 (1.2 equiv.) rau hauv cov kua dej ntawm cov amino acid 2a–c, 3b-c lossis p-hydroxybenzoic acid 3a nyob rau hauv muaj Na2CO3 (1.2 equiv.)
Qhov twg yog siv los ua cov khoom pib hauv kev sib txuas ntawm sulfanilamide?
Sulfanilamide (tseem spelled sulphanilamide) yog sulfonamide tshuaj tua kab mob. Chemically, nws yog ib qho organic compound uas muaj aniline derivatized nrog ib pawg sulfonamide.
YKoj ua li cas ua sulfanilamide?
Sulfa Drug Synthesis
Cov acetanilide coj mus kuaj tau chlorosulfonation. Qhov tshwm sim 4-acetamidobenzenesulfanyl chloride yog kho nrog ammonia los hloov cov tshuaj chlorine nrog cov amino pawg thiab them taus 4-acetamidobenzenesulfonamide. Lub tom ntej hydrolysis ntawm sulfonamide tsim cov sulfanilamide.
Tus catalyst yog siv rau kev sib txuas ntawm sulfanilamide?
Cov tshuaj tiv thaiv ntawm sulfonyl halide thiab amines feem ntau yog catalyzed los ntawm cov catalyst yooj yim xws li sodium carbonate, potassium carbonate, pyridine lossis triethyl amine. Txoj kev sulfonyl chloride sawv cev rau txoj kev yooj yim tshaj plaws thiab ncaj qha rau kev npaj sulfonamides.
