(3-Chlorophenyl)boronic acid → HCID 59807916, compound

Participants

Reaction Conditions

Reaction Steps

To a stirring solution of 1-(2-bromophenyl)-2,5-dimethyl-1H-pyrrole-3-carboxylic acid (4-methanesulfonyl-phenyl)-amide (100 mg, 0.23 mmol) and 3-chlorophenylboronic acid (0.95 g, 0.57 mmol) in DME/EtOH (2:1, 5 mL), 1M Na2CO3 (0.80 mL) and Pd(dppf)2Cl2 (38 mg, 0.046 mmol) were added. The reaction mixture was degassed and heated at 80° C. under Argon for 1 h and monitored by LC-MS. The mixture was diluted with DCM (20 mL) and washed with 15 mL of brine. The aqueous phase was extracted with DCM (20 mL) twice. The combined extracts were dried over anhyd Na2SO4 and concentrated under reduced pressure. The crude residue was purified by flash chromatography on silica gel, eluting with EtOAc-Hex (0-50%) to yield the title compound (53 mg, 48%) as a pale yellow solid. 1H-NMR (CDCl3): δ 7.89 (2H, d), 7.80 (2H, d), 7.65 (1H, s), 7.57 (3H, m), 7.26 (3H, m), 7.04 (1H, t), 6.87 (1H, m), 6.13 (1H, s), 3.03 (3H, s), 2.23 (3H, s), 1.89 (3H, s). MS (ESI): 479 (MH+). B. In a manner similar to that described for Example 13A, the following compounds were prepared from the appropriate boronic acids:

Provenance & Evidence