Chemical Properties | Di-tert-butyl dicarbonate (BOC Anhydride, DiBOC) haina ruvara kusvika kuchena kune yero makristasi, yakaomeswa mikuru kana yakajeka mvura.Inonyunguduka mukati metembiricha yemumba (mp=23°C).Haina kuora panguva iyi kana kunyange kutonhora kwepamusoro zvishoma.Semuenzaniso, inowanzocheneswa ne distillation pasi pekumanikidzwa kwakaderedzwa patembiricha inosvika kunosvika 65°C.Pakupisa kwepamusoro inoora kuita isobutene, t-butyl doro uye carbon dioxide. |
Uses | Di-tert-butyl dicarbonate (Boc2O) chinhu chinoshandiswa zvakanyanya kuunza mapoka ekudzivirira mu peptide synthesis.Inoita basa rinokosha mukugadzirira kwe6-acetyl-1,2,3,4-tetrahydropyridine nekuita ne 2-piperidone.Inoshanda seboka rinodzivirira rinoshandiswa mune yakasimba chikamu peptide synthesis. |
Kugadzirira | Kugadzirira kweDi-tert-butyl dicarbonate kunotevera: Kune monoester sodium munyu solution yakawedzerwa 2g yeN, N-dimethylformamide, 1g yepyridine, 1g ye triethylamine, Kutonhora kusvika -5 ~ 0 ° C, 60g diphosgene yaiitwa zvishoma nezvishoma. yakawedzera dropwise mukati me1.5h dropwise kuwedzera kwainge kwapera, kuchidziirwa kusvika kukamuri tembiricha (25°C), yakanamirwa kwe2h, kuita kwakabvumidzwa kumira mushure mekusefa, kugeza organic solution.Yakaomeswa neanhydrous magnesium sulfate, iyo solvent yakabviswa pamhepo yekumanikidza kupa crude chigadzirwa 65 ~ 70g.Mushure mekutonhodzwa uye crystallization, 57-60g ye di-tert-butyl dicarbonate yakawanikwa mugoho re60-63%. |
Tsanangudzo | ChEBI: Di-tert-butyl dicarbonate is acyclic carboxylic anhydride.Iyo inoshanda yakabatana ne dicarbonic acid. |
Reactions | Kuita kweanotsiviwa anilines neBoc2O pamberi pehuwandu hwe stoichiometric hwe4-dimethylaminopyridine (DMAP) mune inert solvent (acetonitrile, dichloromethane, ethyl acetate, tetrahydrofuran, toluene) pakupisa kwekamuri kunotungamirira kune aryl isocyanates mukati mehuwandu hwe10. min. Di-tert-butyl dicarbonate uye 4- (dimethylamino) pyridine yakadzokororwa zvakare.Kuita kwavo nemaamine nemadoro |
General Description | Di-tert-butyl dicarbonate (Boc2O) ndeye reagent inonyanya kushandiswa kuunza Boc kudzivirira boka kune amine functionalities.Inoshandiswawo seanobvisa mvura mumuviri mune mamwe maitiro eorganic, kunyanya necarboxylic acids, mamwe mapoka ehydroxyl, kana neprimary nitroalkanes. |
Hazard | Inotsamwisa iyo inogona kukonzera kukuvara kwakanyanya kweziso;Inogona kukonzera ganda sensitization;Chakanyanya chepfu nekufemesa |
Kupisa uye Explosibility | Inopisa moto |
Kuchenesa Nzira | Sungunusa ester nekudziisa pa ~ 35o, uye uiise muvacuum.Kana IR neNMR ( 1810m 1765 cm-1 , muCCl4 1.50 singlet) zvichiratidza kusachena kwakanyanya, wogeza nehupamhi hwakaenzana hweH2O ine citric acid kuti aqueous layer iite acidic zvishoma, unganidza organic layer woiomesa pamusoro peanhydrous MgSO4. woidira muvacuum.[Pope et al.Org Synth 57 45 1977, Keller et al.Org Synth 63 160 1985, Grehn et al.Angew Chem 97 519 1985.] INOPISHA. |