Ethanol → 4-(2-(3-Oxa-8-azabicyclo[3.2.1]octane-8-carbonyl)-4-(4-chlorophenyl)thiazol-5-yl)benzenesulfonamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-oxa-8-azabicyclo[13.2.1]octan-8-yl(5-bromo-4-(4-chlorophenyl) thiazol-2-yl)methanone (Step 3 of compound 68, 0.12 g, 0.29 mmol) in a mixture of toluene:ethanol (2 ml: 6 ml) were added 4-aminosulfonylbenzene boronic acid (0.07 g, 0.35 mmol) and potassium carbonate (0.12 g, 0.87 mmol) at 25° C. in a tube, the nitrogen gas was bubbled through reaction mixture for 15 minutes. To the reaction mixture was added tetrakis(triphenylphosphine)palladium(0) (0.017 g, 0.015 mmol) under nitrogen and tube was sealed. The reaction mixture was heated at 90-95° C. for 18 hr with stirring. The progress of reaction was monitored by TLC. The reaction mixture was cooled to 25° C. and filtered through celite. The residue was washed with ethanol (2×20 ml). The filtrate was concentrated under reduced pressure to obtain a crude product; which was purified by column chromatography over silica gel (100-200 mesh) using 40% ethyl acetate in hexanes as an eluent to obtain the title compound (0.08 g, 56.3%). MS: m/z 490 (M+1).

Provenance & Evidence