Qhov no qhia, tsis yog tsuas yog hydrogen ntawm txhuas tab sis kuj yog β-hydrogen ntawm isobutyl pawg koom nrog hauv kev txo qis. Tab sis ob daim ntawv cog lus tsis zoo thaum lub sijhawm txo. … Yog li DIBAL-H yog tus reagent xaiv rau kev txo qis ntawm α, β-unsaturated carbonyl compounds rau allylic alcohols
Pab pawg twg DIBAL-H txo?
Dab tsi yog siv rau: DIBAL yog tus neeg sawv cev muaj zog, loj heev. Nws yog qhov tseem ceeb tshaj plaws rau kev txo qis ntawm esters rau aldehydesTsis zoo li lithium aluminium hydride, nws yuav tsis txo cov aldehyde ntxiv yog tias tsuas yog ib qho sib npaug ntxiv. Nws kuj tseem yuav txo tau lwm cov tshuaj carbonyl xws li amides, aldehydes, ketones, thiab nitriles.
DIBAL-H tsis txo dab tsi?
H tsis tuaj yeem txo: amides, acids, isocyanides thiab nitro pawg.
DIBAL-H siv rau dab tsi?
DIBAL muaj txiaj ntsig hauv organic synthesis rau ntau yam kev txo qis, suav nrog hloov cov carboxylic acids, lawv cov derivatives, thiab nitriles rau aldehydes. DIBAL ua tau zoo txo α-β unsaturated esters rau cov allylic cawv.
Puas LiAlH4 txo alkenes?
Lithium aluminium hydride tsis txo cov alkenes yooj yim 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.
