1,2-Dichloroethane → HCID 59644753, compound

Participants

Reaction Steps

A mixture of acid (12) (63 mg, 0.114 mmol), EDC (44 mg, 0.228 mmol), HOBt (18 mg, 0.114 mmol), 114 μL of 2N ethylamine in THF (0.228 mmol) in 1 mL of methylene chloride was allowed to stir for 24 h at room temperature. Upon completion, the solvent was removed and 10 mL of 2N HCl aqueous solution was added and the resulting mixture was extracted with EtOAc (4×20 mL). The combined extracts were washed with water and brine, dried over anhydrous sodium sulfate and concentrated. The residue was purified by column chromatography on a silica gel column using 50% EtOAc/hexane and EtOAc sequentially as the eluents to give 53.0 mg of the title compound. 1H NMR (CDCl3): δ 7.96 (d, J=8.52 Hz, 1H), 7.87 (d, J=2.08 Hz, 1H), 7.83 (br s, 1H), 7.42 (obscured dd, J=8.52, 2.16 Hz, 1H), 7.40 (s, 1H), 7.29 (dd, J=8.12, 2.20 Hz, 1H), 6.90 (d, J=1.72 Hz, 1H), 6.77 (d, J=8.20 Hz, 1H), 6.76 (s, 1H), 6.72 (d, J=8.08 Hz, 1H), 6.54 (d, J=8.52 Hz, 1H), 6.17 (br s, 1H), 5.62 (br s, 1H), 3.67 (s, 3H), 3.52 (s, 2H), 3.45 (m, 2H), 3.29 (m, 2H), 1.23 (dd, J=7.48, 7.48 Hz, 3H), 1.12 (dd, J=7.52, 7.52 Hz, 3H). LCMS (ESI−) 579 (M−1).

Provenance & Evidence