Nitric Acid → HCID 86620258, compound

Participants

Reaction Steps

A solution of 109 (1.0 g, 2.8 mmol) in CH2Cl2 (20 mL) was treated with fuming HNO3 (6 mL). The mixture was stirred at room temperature for 30 min, and quenched with ice. The mixture was extracted with CH2Cl2 (3×50 ml) dried, and concentrated under reduced pressure. The residue was chromatographed on silica gel, eluting with EtOAc/petroleum ether (from 1:4 to 1:1) to give 6-acetyl-1 chloromethyl)-5-nitro-3-(trifluoroacetyl)-1,2-dihydro-3H-benzo[e]indole (111) (640 mg, 57%) as a brown solid: mp 182-184° C. (EtOAc/petroleum ether); 1H NMR (CDCl3) δ 9.18 (s, 1H), 9.06 (d, J=1.4 Hz, 1H), 8.28 (dd, J=8.8, 1.6 Hz, 1H), 7.95 (d, J=8.8 Hz, 1H), 4.68-4.63 (m, 1H), 4.57-4.49 (m, 1H), 4.48-4.30 (m, 1H), 3.93-3.87 (m, 1H), 3.65-3.58 (m, 1H), 2.70 (s, 3H); 13C NMR 200.4, 154.7 (q, JC-F 39.2 Hz), 148.7, 139.2, 138.2, 130.9, 130.4, 127.7, 127.5, 125.9, 119.6, 115.7, 115.6 (q, JC-F 288H), 52.7, 45.4, 42.7, 28.5. Anal. (C17H12ClF3N2O4) C, H, N.

Provenance & Evidence