Carbamic acid, [(1S,2R)-2-aminocyclohexyl]-, 1,1-dimethylethyl ester (9CI)

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H315：Verursacht Hautreizungen.

  H318：Verursacht schwere Augenschäden.

  H319：Verursacht schwere Augenreizung.

• Sicherheit

  P264：Nach Gebrauch gründlich waschen.

  P264：Nach Gebrauch gründlich waschen.

  P280：Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

  P305+P351+P338：BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.

Carbamic acid, [(1S,2R)-2-aminocyclohexyl]-, 1,1-dimethylethyl ester (9CI) Chemische Eigenschaften,Einsatz,Produktion Methoden

• Synthese

  Triphenylphosphine (14.3 g) was added to a THF (190 ml) solution containing tert-butyl S,2S)-2-hydroxycyclohexyl) carbamate (10.0 g), followed by ice cooling. Diethyl azodicarboxylate (40% in toluene) (24.3 g) and DPPA (15.3 g) were added dropwise to the reaction solution, followed by stirring at room temperature for 1 hour. The reaction solution was left overnight. The solvent was distilled away under reduced pressure. Water was added, and then a 20% sodium hydroxide aqueous solution was added. Then, the organic layers were collected. Water (30 ml) was added to the obtained organic layers, followed by heating to 60 C. A THF (40 ml) solution containing triphenylphosphine (14.3 g) was added dropwise, followed by reflux for 2.5 hours. The solvent was distilled away under ordinary pressure. Toluene was added, and the pH was adjusted with 3M hydrochloric acid to pH=1 or less. Then, the resulting aqueous layers were collected, ethyl acetate was added, and the pH was adjusted with a 20% sodium hydroxide aqueous solution to pH 12. The organic layers were collected and dried over anhydrous sodium sulfate. Light yellow oily matter of tert-butyl ((1S,2R)-2-aminocyclohexyl)carbamate (Carbamic acid, [(1S,2R)-2-aminocyclohexyl]-, 1,1-dimethylethyl ester (9CI))was thus obtained.

Carbamic acid, [(1S,2R)-2-aminocyclohexyl]-, 1,1-dimethylethyl ester (9CI) Upstream-Materialien And Downstream Produkte

Carbamic acid, [(1S,2R)-2-aminocyclohexyl]-, 1,1-dimethylethyl ester (9CI) Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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