Sodium hydride → HCID 178486046, compound

Participants

Reaction Steps

Sodium hydride (0.22 g) is added to a solution of cis-4-tert-butoxycarbonylamino-cyclohexanecarboxylic acid (0.49 g) in N,N-dimethylacetamide (5 mL) chilled in an ice bath. The cooling bath is removed and the mixture is stirred at room temperature for 1.5 h. Then, the mixture is cooled in an ice bath and methyl iodide (0.63 mL) is added. The cooling bath is removed and the mixture is stirred at room temperature overnight. 1 M aqueous NaOH solution (6 mL) is added and the mixture is stirred at room temperature for another 12 h. Then diethyl ether is added and the aqueous phase is separated. The organic phase is extracted three times with water and the aqueous extracts and phase are combined and acidified using 2 M aqueous KHSO4 solution. The acidic aqueous phase is extracted with diethyl ether and the combined organic extracts are dried (Na2SO4). The solvent is evaporated to afford the title compound as a solid.

Provenance & Evidence