Hydrochloric Acid → HCID 178514755, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of tert-butyl 4-hydroxycyclohexylcarbamate (0.250 g) in tetrahydrofuran (5 mL) was added sodium hydride (0.186 g). After stirring for 15 minutes, 4-fluoro-3-nitrobenzenesulfonamide (0.256 g) was added as a solution in tetrahydrofuran (1 mL). The reaction was heated to 60° C. for 1.5 hours, cooled and poured into a mixture of dichloromethane (100 mL) and water (25 mL). The aqueous layer was adjusted to pH˜4 with 1N aqueous HCl and the organic layer was separated, washed with brine (50 mL), dried over magnesium sulfate and concentrated. The residue was loaded onto silica gel (GraceResolv 40 g) and eluted using a gradient of 0.5% to 7.5% methanol/dichloromethane over 30 minutes. This solid was immediately treated with HCl (4.0M in dioxane, 5 mL) at room temperature for 1 hours and concentrated to give the title compound.

Provenance & Evidence