Sodium Carbonate → HCID 178523817, Verbindung

Beteiligte Stoffe

Reaktionsschritte

To a suspension of 50 g (0.33 mol) trans-4-aminocyclohexanol.hydrochloride and 77 g (0.726 mol, 2.2 eq) Na2CO3 in 650 ml THF and 150 ml water, 51.2 ml (0.363 mol, 1.1 eq) benzyl chloroformate were added at 5° C. over a period of 20 min. The reaction mixture was stirred at RT for 2 h, diluted with EtOAc and the phases were separated. The organic layer was washed with brine, dried over Na2SO4, filtered and evaporated. Trituration from hexane yielded 162.4 g (98%) trans-4-Hydroxy-cyclohexylcarbamic acid benzyl ester as white crystals, MS: 249 (M) (in analogy to: Venuti, Michael C.; Jones, Gordon H.; Alvarez, Robert; Bruno, John J.; J.Med.Chem.; 30; 2; 1987; 303-318).

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