Ammonia → HCID 178418830, compound

Participants

Reaction Conditions

Reaction Steps

A solution of Intermediate 130 (500 mg) in dioxane (2.5 ml) was added with 28% aqueous ammonia solution (2.5 ml) and stirred at 150° C. for 20 hours in a sealed tube. The reaction mixture was cooled to room temperature, and then the solvent was evaporated under reduced pressure. The residue was added with dioxane (6 ml), 2 N aqueous sodium hydroxide (2 ml) and di-t-butyl dicarbonate (655 mg) and stirred at room temperature for 1 hour. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate:methanol=30:1) to obtain the title compound (95.0 mg).

Provenance & Evidence