Water → 3-[4-(3-Hydroxy-8-aza-bicyclo[3.2.1]oct-8-ylmethyl)-phenyl]-9-(2-trimethylsilanyl-ethoxymethyl)-9H-dipyrido[2,3-b;4',3'-d]pyrrole-6-carbonitrile

Participants

Reaction Conditions

Reaction Steps

A degassed mixture of 3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-9-(2-trimethylsilanylethoxymethyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile (217 mg, 0.48 mmol), 8-(4-bromobenzyl)-8-aza-bicyclo[3.2.1]octan-3-ol (157 mg, 0.53 mmol), tetrakis(triphenylphosphine)palladium(0) (33 mg, 5 mol %) and cesium carbonate (157 mg, 0.48 mmol) in a mixture of DME (5 mL), IMS (2 mL) and water (1.3 mL) was heated under microwave irradiation at 100° C. for 30 minutes. The cooled reaction mixture was purified by flash chromatography (silica, 50 g column, Biotage, 0-5% (2N ammonia in MeOH) in DCM) to afford the title compound as an off-white solid (155 mg, 60%). 1H NMR (CDCl3, 300 MHz): 9.21-9.17 (m, 1H), 8.95 (d, J=2.1 Hz, 1H), 8.61 (d, J=2.1 Hz, 1H), 8.43 (s, 1H), 7.67-7.53 (m, 4H), 6.04 (s, 2H), 3.70-3.58 (m, 4H), 3.35-3.15 (m, 2H), 2.20-1.60 (m, 10H), 0.95 (t, J=8.2 Hz, 2H), 0.00 (s, 9H). LCMS (Method B): RT=2.92 min, M+H+=540.

Provenance & Evidence