Ethyl Acetate → HCID 68504957, compound

Participants

Reaction Conditions

Reaction Steps

3-amino-5-(4-bromophenyl)thiophene-2-carboxylic acid (11.21 mmol), N-methyl piperazine (11.21 mmol) and N-methylpyrrolidinone (13.5 mL) were mixed together The reaction mixture was stirred at 160° C. for 5 hours and cooled down to room temperature. EtOAc and water were added, organics were separated, dried over Na2SO4, concentrated under reduced pressure and filtrated over silica (DCM/MeOH). Diisopropyl ether was added to the crude material and the residue obtained was filtered to give Intermediate IX.1 as a beige solid in 44% yield, which was characterized by the following spectroscopic data: MS (ESI, EI+) m/z=255 (MH+).

Provenance & Evidence