Piperidine → 2-Nitro-5-(piperidin-1-yl)benzamide

Participants

Reaction Steps

To 5-Fluoro-2-nitro-benzamide (850 mg, 4.07 mmol) in THF (100 mL), was added piperidine (381 mg, 4.47 mmol) and diisopropyl ethyl amine (780 mL, 4.07 mmol) and the solution was heated to 70 C in a sealed tube for 12 h. The resulting yellow precipitate was collected to give 2-Nitro-5-piperidin-1-yl-benzamide 948 mg (100% yield) HPLC tr=3.58 min (100%), FIA m/e 250.2 (M+H) 248.8 (M-H); HNMR (500 MHz, dmso): δ 7.95 (1H, d), 7.85 91H, bs), 7.50 (1H, bs), 6.97 (1H, d), 6.80 (1H, s), 3.50 (4H, m), 1.70-1.50 (6H, m).

Provenance & Evidence