Tuam Tshoj txoj kev xa khoom nyab xeeb CAS 56553-60-7 hmoov Sodium triacetoxyborohydride Chaw Tsim Khoom thiab Hoobkas

Kev xa khoom zoo CAS 56553-60-7 hmoov Sodium triacetoxyborohydride

Kev Piav Qhia Luv:

Khoom npe: Sodium triacetoxyborohydride

CAS: 56553-60-7

Cov mis mos molecular: C6H10BNaO6

Tsos: hmoov dawb

Cov Ntsiab Lus: 95.0% ~ 105.0% (titration)

Siv: Rau kev txo cov tshuaj tiv thaiv ntawm ketone thiab aldehyde, kev txo cov tshuaj amination lossis lactamization ntawm carbonyl compound thiab amine, thiab kev txo cov tshuaj amination ntawm aryl aldehyde

Peev Xwm: 5 ~ 10mt / hli

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Cov Khoom Qhia Txog Khoom

Cov Cim Npe Khoom

Kev piav qhia txog khoom

Khoom npe: Sodium triacetoxyborohydride

CAS: 56553-60-7

Cov mis mos molecular: C6H10BNaO6

Tsos: hmoov dawb

Cov Ntsiab Lus: 95.0% ~ 105.0% (titration)

Peev Xwm: 5 ~ 10mt / hli

Sodium triacetoxyborohydride (STAB) CAS 56553-60-7 tseem hu ua sodium triacetoxyhydroborate, feem ntau hu ua STAB, yog ib qho tshuaj lom neeg nrog cov mis Na (CH3COO) 3BH. Ib yam li lwm cov borohydrides, nws yog siv los ua tus neeg sawv cev txo qis hauv kev tsim cov organic. Cov ntsev tsis muaj xim no yog npaj los ntawm protonolysis ntawm sodium borohydride nrog acetic acid: NaBH4 + 3 HO2CCH3 → NaBH(O2CCH3) 3 + 3 H2.

Vim yog cov teebmeem steric thiab hluav taws xob ntawm cov pawg acetoxy, sodium triacetoxyborohydride yog tus neeg sawv cev txo qis dua li sodium borohydride lossis txawm tias sodium cyanoborohydride. Ntxiv mus, NaBH (OAc) 3 zam cov khoom lom uas tsim los ntawm sodium cyanoborohydride. Sodium triacetoxyborohydride yog qhov tshwj xeeb tshaj yog rau kev txo cov aminations ntawm aldehydes thiab ketones.
Txawm li cas los xij, tsis zoo li sodium cyanoborohydride, triacetoxyborohydride yog dej-sensitive, thiab dej tsis tuaj yeem siv ua cov kuab tshuaj nrog cov reagent no, thiab nws tsis sib xws nrog methanol. Nws tsuas yog reacts qeeb nrog ethanol thiab isopropanol thiab tuaj yeem siv nrog cov no. NaBH (OAc) 3 kuj tseem siv tau rau kev txo qis alkylation ntawm cov amines theem nrab nrog aldehyde-bisulfite adducts.