Water → HCID 68691513, compound

Participants

Reaction Steps

A solution of 175 (45 mg, 0.11 mmol) and Cs2CO3 (38 mg, 0.11 mmol) in MeOH (3 mL) and CH2Cl2 (6 mL) was stirred for 15 min. Water w added and the mixture was extracted with EtOAc (×3). The combined EtOAc extras were washed with water (×2), brine (×3), dried, and evaporated. The residue was dissolved in HCl(g) saturated dioxane (5 mL) and stirred for 1 h. The dioxane was evaporated to give 8-acetyl-1-(chloromethyl)-5-nitro-1,2-dihydro-3H-benzo[e]indole hydrochloride (176) (38 mg, 100%): mp>300° C.; 1H NMR [(CID3)2SO] (two H not observed) 8.42 (d, J=1.3 Hz, 1 H), 8.19 (d, J=9.1 Hz, 1H), 7.80 (dd, J=9.1, 1.7 Hz, 1H), 7.77 (s, 1H), 4.41-4.33 (m, 1H), 3.96 (dd, J=11.0, 4.1 Hz, 1H), 3.85 (t, J=10.1 Hz, 1H), 3.77 (dd, J=11.0, 2.6 Hz, 1H), 3.73 (dd, J=10.3, 2.7 Hz, 1H), 2.74 (s, 3H); 13C NMR δ 197.9, 150.0, 147.1, 135.3, 130.0, 127.1, 124.3, 123.6, 121.6, 119.8, 111.0, 50.8, 46.6, 42.7, 26.8. This material was used directly in the next step.

Provenance & Evidence