1,2-Dichloroethane → HCID 22224933, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-[7-(4-fluoro-phenyl)-4-oxo-4,5-dihydro-3H-benzo[b][1,4]diazepin-2]-benzoic acid (Example 163) (262 mg, 0.7 mmol) and 1-hydroxybenzotriazole (130 mg, 0.84 mmol) in CH3CN/DMF (7 mL/10 mL), cooled to 0° C., was added EDC (161 mg, 0.84 mmol) and the mixture was stirred at 0° C. for 1 h. N-hydroxy-acetamidine (62 mg, 0.84 mmol) was added and stirring was continued for 4 h at 23° C. The reaction mixture was partitioned between ethyl acetate and H2O and the organic layer was dried over Na2SO4 and evaporated in vacuum. The residue was heated in toluene (30 mL) for 20 h at reflux. The mixture was cooled, evaporated in vacuum and the residue was chromatographed on silica gel using ethyl acetate/hexane (2:1) as eluent. The purified product was triturated with ethyl acetate to give the title compound as light yellow solid (49 mg).

Provenance & Evidence