Ukunikezwa kwefekthri intengo engcono kakhulu I-Sodium triacetoxyborohydride powder CAS 56553-60-7

Indlela yokuthumela ephephile CAS 56553-60-7 powder I-sodium triacetoxyborohydride
Igama lomkhiqizo: I-sodium triacetoxyborohydride
I-CAS: 56553-60-7
Ifomula yemolekyuli: C6H10BNaO6
Ukubukeka: impushana emhlophe
Okuqukethwe: 95.0%~105.0%(i-titration)
Ukusetshenziswa: Ukuze kuncishiswe ukusabela kwe-ketone ne-aldehyde, i-reductive amination noma i-lactamization ye-carbonyl compound ne-amine, kanye ne-reductive amination ye-aryl aldehyde.
Amandla: 5~10mt/ngenyanga

I-sodium triacetoxyborohydride (STAB) CAS 56553-60-7 eyaziwa nangokuthi i-sodium triacetoxyhydroborate, evame ukufushaniswa i-STAB, iyinhlanganisela yamakhemikhali enefomula ethi Na(CH3COO)3BH.Njengamanye ama-borohydrides, isetshenziswa njenge-ejenti yokunciphisa ku-organic synthesis.Lo sawoti ongenambala ulungiswa nge-protonolysis ye-sodium borohydride ene-acetic acid: NaBH4 + 3 HO2CCH3 → NaBH(O2CCH3)3 + 3 H2.

Ngenxa yemiphumela eqinile neye-elekthronikhi yamaqembu e-acetoxy, i-sodium triacetoxyborohydride iyi-ejenti enciphisa kancane kune-sodium borohydride noma i-sodium cyanoborohydride.Ngaphezu kwalokho, i-NaBH(OAc)3 igwema imikhiqizo eseceleni enobuthi ekhiqizwe i-sodium cyanoborohydride.I-sodium triacetoxyborohydride ifaneleka ngokukhethekile ekunciphiseni ama-aldehydes nama-ketones.

Kodwa-ke, ngokungafani ne-sodium cyanoborohydride, i-triacetoxyborohydride ayizwani namanzi, futhi amanzi awakwazi ukusetshenziswa njenge-solvent nalesi sici, futhi ayihambisani ne-methanol.Isabela kancane kuphela nge-ethanol ne-isopropanol futhi ingasetshenziswa nalokhu.I-NaBH(OAc)3 ingase isetshenziselwe ukunciphisa i-alkylation yama-amine esibili ane-aldehyde-bisulfite adducts.