Acetic Anhydride → N-acetyl-N-(3-chloro-7-(2,4-dichlorophenyl)-6-(4-chlorophenyl)-1,2-dihydro-1-isobutyl-2-oxo-1,8-naphthyridin-4-yl)acetamide

Participants

Reaction Conditions

Reaction Steps

To the product of EXAMPLE 61 (70 mg) in 1,4-dioxane (1 mL) was added acetic anhydride (2 mL) and DMAP (25 mg). The reaction was heated to 60° C. After about 1 hour the reaction was cooled to room temperature and quenched with methanol (1 mL) the reaction was diluted with EtOAc and washed with saturated aqueous NaHCO3/1 M aqueous NaOH solution (1:1). The organic layer was dried (Na2SO4). The concentrated residue was purified by flash chromatography on silica gel gradient eluted with 0-100% EtOAc in hexane affording the title compound. HPLC/MS: 590.0 (M+1), 592.0 (M+3); Rt=4.59 min.

Provenance & Evidence