Dimethylformamide → HCID 71549998, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of (1R,2R)-2-((6-((6-bromo-5-methoxy-1H-benzo[d]imidazol-1-yl)methyl)benzo[d]thiazol-2-yl)amino)cyclohexanol (50 mg, 0.1 mmol) from Step 5 of Example 47 in DMF (1.5 mL) was added zinc cyanide (24 mg, 0.2 mmol). Argon was bubbled into the mixture for 5 min followed by the addition of 1,1′-bis(diphenylphosphino)ferrocene (9 mg, 0.02 mmol) and tris(dibenzylideneacetone)dipalladium (9 mg, 0.01 mmol). Argon was bubbled into the mixture for an additional 5 min. The reaction vessel was sealed and the mixture was heated at 110° C. for 15 h. The mixture was cooled to rt and argon was again bubbled into the mixture for 5 min. Additional zinc cyanide (24 mg, 0.2 mmol), 1,1′-Bis(diphenylphosphino)ferrocene (9 mg, 0.02 mmol) and tris(dibenzylideneacetone)dipalladium (9 mg, 0.01 mmol) were added to the mixture, and the reaction vessel was resealed and heated for 5 h. The mixture was cooled to rt, filtered, and the filtrate was purified by reverse-phase preparative HPLC using a mixture of water (5% CH3CN, 0.05% HCOOH) and CH3CN (0.05% HCOOH) as the mobile phase and Varian Pursuit XRs C18 column as the stationary phase to afford 1-((2-(((1R,2R)-2-hydroxycyclohexyl)amino)benzo[d]thiazol-6-yl)methyl)-5-methoxy-1H-benzo[d]imidazole-6-carbonitrile (18 mg, 41%) as a white powder. 1H NMR (300 MHz, DMSO-d6) δ 8.60 (s, 1H), 8.12 (s, 1H), 8.01 (d, J=7.3 Hz, 1H), 7.70 (d, J=0.9 Hz, 1H), 7.43 (s, 1H), 7.20-7.34 (m, 2H), 5.46 (s, 2H), 4.76 (d, J=4.9 Hz, 1H), 3.90 (s, 3H), 3.51 (m, 1H), 3.33 (m, 1H), 2.03 (m, 1H), 1.87 (m, 1H), 1.57-1.67 (m, 2H), 1.15-1.34 (m, 4H). LCMS (ESI) m/z 434 (M+H)+.

Provenance & Evidence