2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
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.
Pom zoo:
Dab tsi yog qhov txawv ntawm cov khoom siv thiab cov kab lis kev cai tsis yog khoom?
Cov kab lis kev cai yog hais txog cov khoom lossis cov khoom ntawm ib pawg neeg. … Cov kab lis kev cai tsis yog khoom, qhov sib txawv, muaj cov tswv yim, kev xav, thiab kev ntseeg ntawm ib lub zej zog. Cov khoom siv thiab cov khoom tsis zoo ntawm kab lis kev cai yog txuas, thiab cov khoom siv lub cev feem ntau ua cim cov tswv yim kab lis kev cai.
Qhov twg yog qhov txuas txuas txuas txuas ntxiv?
Qhia kom meej tias Uplink Connectivity Monitor tau qhib nyob rau hauv Settings > System Settings > Controller Configuration > Uplink Connectivity Monitor. Kuv yuav ua li cas lov tes taw uplink saib txuas? Txhawm rau lov tes taw "
Puas yog kev sib txuas lus lossis kev sib txuas lus?
yog tias telecommunication yog (tsis suav tau) kev tshawb fawb thiab thev naus laus zis ntawm kev sib txuas lus ntawm cov lus nyob deb uas siv hluav taws xob, hluav taws xob lossis hluav taws xob impulses thaum kev sib txuas lus yog kev tshawb fawb thiab thev naus laus zis ntawm kev sib txuas lus.
Qhov twg yog qhov kev txiav txim siab rau kev tsis lees paub thiab rau kev ua kom muaj kev tawm tsam ntawm kev tawm tsam?
Kev qhuab ntuas tau siv los ntawm cov thawj coj loj hauv cov tub rog Romanrau txim rau cov koom haum lossis pab pawg loj ua txhaum cai, xws li kev ua phem, kev tawm tsam, kev tawm tsam, thiab kev tsis ncaj ncees, thiab rau lub pacification ntawm rebellious legions.
Qhov twg yog qhov kev sib raug zoo ntawm stereochemical ntawm ob khub ntawm cov molecules?
Enantiomers thiab diastereomers tsuas yog ob qho kev sib raug zoo stereochemical uas koj tuaj yeem muaj ntawm ob lub molecules. Cov stereoisomers yog ob lub molecules uas ua tiav ob qhov kev xav tau hauv qab no: Ob lub molecules yuav tsum muaj tib lub qauv molecular, thiab.
