Indlela yokuthumela ephephile yaseShayina i-CAS 56553-60-7 powder Umkhiqizi kanye Nefektri yeSodium triacetoxyborohydride

Indlela yokuthumela ephephile i-CAS 56553-60-7 powder i-Sodium triacetoxyborohydride

Incazelo emfushane:

Igama lomkhiqizo: I-Sodium triacetoxyborohydride

I-CAS: 56553-60-7

Ifomula yama-molecule: C6H10BNaO6

Ukubukeka: impuphu emhlophe

Okuqukethwe: 95.0%~105.0% (inani)

Ukusetshenziswa: Kokunciphisa ukusabela kwe-amination kwe-ketone ne-aldehyde, i-reductive amination noma i-lactamization ye-carbonyl compound kanye ne-amine, kanye ne-reductive amination ye-aryl aldehyde

Umthamo: 5~10mt/ngenyanga

Sithumelele i-imeyili

Imininingwane Yomkhiqizo

Amathegi Omkhiqizo

Incazelo Yomkhiqizo

Igama lomkhiqizo: I-Sodium triacetoxyborohydride

I-CAS: 56553-60-7

Ifomula yama-molecule: C6H10BNaO6

Ukubukeka: impuphu emhlophe

Okuqukethwe: 95.0%~105.0% (inani)

Umthamo: 5~10mt/ngenyanga

I-Sodium triacetoxyborohydride (STAB) CAS 56553-60-7 eyaziwa nangokuthi i-sodium triacetoxyhydroborate, evame ukufushaniswa ngokuthi i-STAB, iyinhlanganisela yamakhemikhali enefomula i-Na(CH3COO)3BH. Njengamanye ama-borohydrides, isetshenziswa njenge-ejenti yokunciphisa ekuhlanganisweni kwezinto eziphilayo. Lo sawoti ongenambala ulungiswa yi-protolysis ye-sodium borohydride ene-acetic acid: NaBH4 + 3 HO2CCH3 → NaBH(O2CCH3)3 + 3 H2.

Ngenxa yemiphumela ye-steric neye-elekthronikhi yamaqembu e-acetoxy, i-sodium triacetoxyborohydride iyisithako esinciphisa kalula kune-sodium borohydride noma ngisho ne-sodium cyanoborohydride. Ngaphezu kwalokho, i-NaBH(OAc)3 igwema imikhiqizo eseceleni enobuthi ekhiqizwa yi-sodium cyanoborohydride. I-Sodium triacetoxyborohydride ifaneleka kakhulu ekuncishisweni kwe-aldehydes nama-ketone.
Kodwa-ke, ngokungafani ne-sodium cyanoborohydride, i-triacetoxyborohydride ayizwani namanzi, futhi amanzi awakwazi ukusetshenziswa njengesithako esinalesi sidakamizwa, futhi awahambisani ne-methanol. Isabela kancane kuphela nge-ethanol ne-isopropanol futhi ingasetshenziswa nalezi. I-NaBH(OAc)3 ingasetshenziswa futhi ekunciphisweni kwe-alkylation yama-amine esibili ane-aldehyde-bisulfite adducts.