Ammonium formate → N-[5-(4-Methylpiperazin-1-yl)-3,4 dihydro-2H-1-benzopyran-3-yl]-4-(piperazin-1-yl)benzamide

Participants

Reaction Conditions

Reaction Steps

(S)-N-[5-(4-Methylpiperazin-1-yl)-3,4 dihydro-2H-1-benzopyran-3-yl]-4-(4-benzylpiperazin-1-yl)benzamide (1.7 g, 3.2 mmol) was dissolved in methanol (100 mL). Palladium (10%) on activated carbon (510 mg) and ammonium formate (1.6 g, 26 mmol) were added and the reaction mixture was stirred at 50° C. for 19 h. The catalyst was filtered off and the solvent was evaporated in vacuo to give 1.3 g (92% yield) of the title compound as a pale yellow solid: mp >102° C. sinters; EIMS (70 eV) m/z (relative intensity) 435 (8, M+); [α]22D−102° (c 0.15, chloroform).

Provenance & Evidence