2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Methyl cyanide. Lus Qhia: Alkyl isocyanide ntawm kev txo qis nrog lithium aluminium hydride tsim cov amine theem nrab uas muaj methyl ua ib pawg alkyl.
Qhov twg yuav tsim cov amine thib ob ntawm cov tshuaj tiv thaiv nrog LiAlH4?
Ntawm qhov txo qis los yog nrog nascent hydrogen lossis nrog lithium aluminium hydride (LiAlH 4) alkyl isocyanide tawm los thib ob amine.
Cov tebchaw twg muab cov amine theem nrab ntawm kev txo qis?
Carbylamamines (los yog isocyanides) muab amine theem nrab ntawm kev txo qis.
Can LiAlH4 txo amines?
LiAlH4 yog ib qho muaj zog, tsis muaj kev xaiv txo tus neeg sawv cev rau polar ob daim ntawv cog lus, feem ntau yooj yim xav tias yog qhov chaw ntawm H-. Nws yuav txo aldehydes, ketones, esters, carboxylic acid chlorides, carboxylic acids thiab txawm carboxylate ntsev rau cawv. Amides thiab nitriles raug txo kom amines.
Puas LiAlH4 hnov mob nrog amines?
Nitriles tuaj yeem hloov pauv rau 1° amines los ntawm cov tshuaj tiv thaiv nrog LiAlH4. Thaum lub sij hawm no cov tshuaj tiv thaiv hydride nucleophile tawm tsam cov pa roj carbon electrophilic hauv nitrile los ua ib qho imine anion.
Pom zoo:
Yuav tsum tau muab cov nqi txo qis qis?
Cov khoom muaj nqis ruaj khov muaj qhov nyiaj tshuav ntawm daim ntawv tshuav nyiaj. … Nyob rau hauv lwm yam lus, sau depreciation yog ib tug contra-asset account, txhais tau tias nws offsets tus nqi ntawm cov cuab tam uas nws depreciating. Raws li qhov tshwm sim, cov nyiaj poob qis yog qhov qhov tsis zoo tshaj tawm ntawmdaim ntawv tshuav nyiaj li cas nyob rau hauv cov khoom muaj nqis mus ntev.
Los ntawm cov khoom ntawm kev txo qis amination?
Cov tshuaj tiv thaiv ntawm ib qho amine thiab formaldehyde ua raws li kev txo qis amination tuaj yeem tsim ib qho tshuaj methylated amine. Ib qho tertiary amine feem ntau yog cov khoom ntawm cov tshuaj tiv thaiv yog tias siv formaldehyde ntau dhau.
Cov ntaub ntawv hom twg raug zam los ntawm kev txo qis thiab kev cais tawm?
Cov lus qhia txo qis yuav tsum tsis txhob siv rau cov ntaub ntawv uas muaj tsoomfwv cov ntaub ntawv txawv teb chaws lossis Cov Ntaub Ntawv Txwv lossis Cov Ntaub Ntawv txwv yav dhau los. Txhua daim ntawv teev npe yuav tsum qhia kom meej raws li qhov ua tau, cov ntaub ntawv twg hauv nws tau muab cais tawm thiab qib twg.
Qhov twg hauv qab no muab) aniline los ntawm kev txo cov nitrobenzene?
Kev txo qis ntawm nitrobenzene los ntawm qhov twg hauv qab no reagent muab aniline? C6H5NO2Zn/NH4OH →C6H5NHOH thaum tag nrho lwm cov reagents muab aniline. Qhov twg hauv qab no yog txo cov khoom ntawm nitrobenzene? Teb tiav: Thaum cov tshuaj nitro txo qis, ces amines yog tsim.
Vim li cas qis qis qis qis tv ma?
qis qis yog rated R rau lus, kev nruj kev tsiv, duab liab qab, thiab gore. Vim li cas thiaj pom TV-Ma? Ntshav, kev sib ntaus sib tua ua phem muaj kev txiav plaub hau, stabbing, maulings, thiab lwm yam xwm txheej phem. Riam phom muaj xws li axes, rakes, bludgeons, ropes, aub qus, thiab lwm yam.
