Dichloromethane → 6-Chloro-4a-(4-chloro-benzenesulfonyl)-5,8-difluoro-2,3,4,4a,10,10a-hexahydro-1H-9-oxa-1-aza-phenanthrene

Participants

Reaction Conditions

Reaction Steps

4a-(4-Chloro-benzenesulfonyl)-5,8-difluoro-2,3,4,4a,10,10a-hexahydro-1H-9-oxa-1-aza-phenanthrene (1.0190 g, 2.5475 mmol) was dissolved in 75 ml dichloromethane and cooled to 0° C. then triethylamine (1.1 mL) was added. The solution was stirred at 0° C. for 10 minutes then II was added slowly and the solution was stirred at 0° C. for 3 h. Then the reaction was warmed to room temperature and stirred for 1 h. The reaction was quenched with 50 ml of ice water. The organic layer washed with 50 ml of 1 N HCl solution and dried over sodium sulfate. The product was purified by column using EtOAc/Hex. as the eluent (gradient from 0/100 to 50/50 in 45 minutes). Yield: 124.0 mg, 11%. 1H NMR (CDCl3 400 MHz) δ 7.57 (d, J=8.8 Hz, 2H), 7.52 (d, J=8.8 Hz, 2H), 7.23 (dd, J=9.5, 6.6 Hz, 1H), 5.19 (dd, J=8.8, 6.6 Hz, 1H), 4.32 (d, J=11.7 Hz, 1H), 3.69 (s, 1H), 2.99 (d, J=13.1 Hz, 1H), 2.74 (td, J=13.1, 2.9 Hz, 1H), 2.64 (d, J=13.1 Hz, 1H), 2.20-2.11 (m, 1H), 1.62 (d, J=13.1 Hz, 2H), 1.19-1.06 (m, 1H).

Provenance & Evidence