Ko te wheketere te utu pai rawa atu te konutai triacetoxyborohydride paura CAS 56553-60-7

Te ara tuku haumaru CAS 56553-60-7 paura konutai triacetoxyborohydride
Ingoa Hua: Sodium triacetoxyborohydride
CAS: 56553-60-7
tātai rāpoi: C6H10BNaO6
Te ahua: te paura ma
Ihirangi: 95.0%~105.0%(titrate)
Whakamahinga: Mo te tauhohenga whakaheke amination o te ketone me te aldehyde, te amination whakaiti, te lactamization ranei o te pūhui waro me te amine, me te amination whakaiti o te aryl aldehyde
Te kaha: 5 ~ 10mt / marama

Ko te konutai triacetoxyborohydride (STAB) CAS 56553-60-7 e mohiotia ana ano ko te konutai triacetoxyhydroborate, te nuinga o te whakapoto STAB, he puhui matū me te tauira Na(CH3COO)3BH.Pērā i ētehi atu borohydride, ka whakamahia hei māngai whakaheke i roto i te whakahiato waro.Ka mahia tenei tote taekore e te protonolysis o te konutai borohydride me te waikawa acetic: NaBH4 + 3 HO2CCH3 → NaBH(O2CCH3)3 + 3 H2.

Na te kaha o te mate me te hiko o nga roopu acetoxy, ko te konutai triacetoxyborohydride he mea whakaheke ngawari ake i te konutai borohydride me te konutai cyanoborohydride.I tua atu, ka karohia e NaBH(OAc)3 nga hua-taha paitini i hangaia e te konutai cyanoborohydride.Ko te konutai triacetoxyborohydride he mea tino pai mo nga aminations whakaheke o te aldehydes me nga ketones.

Heoi ano, he rereke ki te konutai cyanoborohydride, he tairongo te triacetoxyborohydride ki te wai, a, kaore e taea te whakamahi i te wai hei whakarewa ki tenei reagent, kaore hoki i te hototahi ki te methanol.He puhoi te mahi ki te waihano me te isopropanol ka taea te whakamahi me enei.Ka taea ano te NaBH(OAc)3 te whakamahi mo te whakaheke whakaheke o nga amine tuarua me nga taapiri aldehyde-bisulfite.