Cov txheej txheem:
- Puas lah teb nrog amides?
- Can amides txo los ntawm LiAlH4?
- Dab tsi tuaj yeem txo amides?
- lah tsis txo?
Video: Puas txo amides?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Lithium aluminium hydride (LiAlH4) - LAH - Txo-Mechanism. …LiAlH4 reagent tuaj yeem txo aldehydes rau thawj cawv, ketones rau cov cawv thib ob, carboxylic acids thiab esters rau thawj cawv, amides thiab nitriles rau amines, epoxides rau cawv thiab lactones rau diols.
Puas lah teb nrog amides?
Amides tuaj yeem hloov pauv rau 1°, 2° lossis 3° amines siv LiAlH4.
Can amides txo los ntawm LiAlH4?
Amides tuaj yeem txo rau amines los ntawm LiAlH 4: Nco ntsoov tias txo qis ntawm tag nrho lwm cov carboxylic acid derivatives muaj cov pab pawg carbonyl tsim cov cawv: Lwm qhov tshwj xeeb yog cov nitriles, tab sis cov no tsis muaj cov pab pawg carbonyl thiab nyob ntawm tus neeg sawv cev txo qis, cov khoom sib txawv tuaj yeem tau txais.
Dab tsi tuaj yeem txo amides?
Cov amides tuaj yeem txo qis nrog lithium aluminium hydride rau cov khoom siv Mannich sib raug.
lah tsis txo?
Lithium aluminium hydride tsis txo yooj yim alkenes lossis arenes. Alkynes tsuas yog txo yog tias ib pawg cawv nyob ze. Nws tau pom tias LiAlH4 txo qis ob daim ntawv cog lus hauv N-allylamides.
Pom zoo:
Tus neeg txo hwj chim yuav hais tias lawv txo hwj chim?
Tus neeg txo hwj chim tiag tiag tsis txhob hu lawv tus kheej txo hwj chim, yog tias lawv tsuas yog vim lawv txo hwj chim dhau ib txwm hais . txhais li cas tus neeg txo hwj chim? Kev txo hwj chim txhais tau tias " tus neeg siab ncaj;
Qhov txawv ntawm kev txo qis thiab tsis txo cov suab thaj yog dab tsi?
Txo cov suab thaj yog cov suab thaj uas cov pa roj carbon monoxide muaj OH pawg txuas uas tuaj yeem txo lwm cov tebchaw. Tsis yog- txo cov suab thaj tsis muaj OH pawg txuas nrog cov pa roj carbon monoxide kom lawv tsis tuaj yeem txo lwm cov tebchaw… M altose thiab lactose txo cov suab thaj, thaum sucrose yog cov piam thaj tsis txo qis .
Vim li cas amides tsis tshua muaj tshwm sim?
Amides tsis tshua muaj zog dua li cov esters vim qhov tseeb tias nitrogen txaus siab pub nws cov khoom siv hluav taws xob ntau dua li cov pa oxygenVim li ntawd, ib nrab tus cwj pwm zoo ntawm carbonyl carbon yog me me nyob rau hauv amides tshaj nyob rau hauv esters, ua rau lub cev no tsawg electrophilic .
Pob amides hnov mob nrog cawv?
Ntawm cov kev sib txawv, N-alkylation ntawm amides nrog cawv yog cov txheej txheem txaus nyiam rau lawv cov synthesis vim cawv yog nkag tau, thiab dej yog tsim los ntawm cov khoom lag luam . Yuav ua li cas nrog amides? Amides tuaj yeem ua hydrolyzed rau hauv carboxylic acid thiab ammonia lossis aminelos ntawm cua sov hauv cov kua qaub lossis cov tshuaj aqueous yooj yim.
Nyob rau hauv tus kheej txo tus txo tus neeg sawv cev yog?
Kev txo tus kheej. oxidation naj npawb oxidation naj npawb Qhov nce nyob rau hauv lub xeev oxidation ntawm ib tug atom, los ntawm ib tug tshuaj tiv thaiv, hu ua oxidation; Kev txo qis hauv oxidation lub xeev yog hu ua txoCov kev cuam tshuam no cuam tshuam nrog kev hloov pauv ntawm cov hluav taws xob:
