Ethanol → HCID 58993777, compound

Participants

Reaction Steps

Into a 50 mL round bottom flask was placed (E)-2-bromo-N-[1-(2-bromo-benzoyl)-5-(5-methoxy-2-trifluoromethyl-benzoimidazol-1-yl)-1H-pyrazin-2-ylidene]-benzamide (vi) (50 mg, 0.07 mmol). To this was added LiOH (100 mg), followed by EtOH (25 mL). The resulting solution was allowed to react, with stirring, for 30 minutes while the temperature was maintained at room temperature. The reaction progress was monitored by TLC (EtOAc/PE=1:2). After completion, the resulting solution was diluted with 15 mL of H2O and extracted two times with 10 mL of EtOAc. The organic layers were combined and dried over Na2SO4. After removal of the solvent and volatile components under vacuum, the residue was purified by eluting through a silica gel column with a 1:6 EtOAc/PE solvent system. This resulted in 10 mg (27%) of the final product 2-bromo-N-[5-(5-methoxy-2-trifluoromethyl-benzoimidazol-1-yl)-pyrazin-2-yl]-benzamide as a white solid.

Provenance & Evidence