Hāʻawi ka hale hana i ke kumukūʻai maikaʻi loa Sodium triacetoxyborohydride pauka CAS 56553-60-7

Ke ala hoʻouna palekana CAS 56553-60-7 pauka Sodium triacetoxyborohydride
inoa huahana: Sodium triacetoxyborohydride
CAS: 56553-60-7
Kumu molekala: C6H10BNaO6
Nānā: ka pauka keʻokeʻo
Maʻiʻo: 95.0%~105.0%(titration)
Hoʻohana: No ka hoʻohaʻahaʻa hoʻoemi ʻana o ka ketone a me ka aldehyde, ka amination reductive a i ʻole lactamization o ka hui carbonyl a me ka amine, a me ka amination hoʻemi o aryl aldehyde
Kaha: 5 ~ 10mt / mahina

ʻO ka sodium triacetoxyborohydride (STAB) CAS 56553-60-7 i ʻike pū ʻia ʻo sodium triacetoxyhydroborate, i hoʻopaʻa pinepine ʻia ʻo STAB, he mea hoʻohui kemika me ke ʻano Na(CH3COO)3BH.E like me nā borohydride ʻē aʻe, hoʻohana ʻia ia ma ke ʻano he mea hōʻemi i ka synthesis organik.Hoʻomākaukau ʻia kēia paʻakai kala ʻole e ka protonolysis o ka sodium borohydride me ka acetic acid: NaBH4 + 3 HO2CCH3 → NaBH(O2CCH3)3 + 3 H2.

Ma muli o ka hopena steric a me ka uila o nā pūʻulu acetoxy, ʻo ka sodium triacetoxyborohydride kahi mea hoʻemi haʻahaʻa ma mua o ka sodium borohydride a i ʻole ka sodium cyanoborohydride.Eia kekahi, pale ʻo NaBH(OAc)3 i nā huahana ʻaoʻao ʻona i hana ʻia e ka sodium cyanoborohydride.He kūpono loa ka sodium triacetoxyborohydride no ka hoʻohaʻahaʻa ʻana o nā aldehydes a me nā ketones.

Eia naʻe, ʻaʻole e like me ka sodium cyanoborohydride, ʻo ka triacetoxyborohydride he mea maʻalahi ka wai, a ʻaʻole hiki ke hoʻohana ʻia ka wai ma ke ʻano he mea hoʻoheheʻe me kēia reagent, ʻaʻole hoʻi i kūpono me ka methanol.Hiki ke hana mālie me ka ethanol a me ka isopropanol a hiki ke hoʻohana pū me kēia.Hiki ke hoʻohana ʻia ka NaBH(OAc)3 no ka hoʻohaʻahaʻa alkylation o nā amine lua me nā mea hoʻohui aldehyde-bisulfite.