Hydrochloric Acid → HCID 68852261, compound

Participants

Reaction Conditions

Reaction Steps

Ethyl (4-(5-(3-cyano-4-(2-propyloxy)phenyl)-thien-2-yl)-3-methylphenyl)propanoate (from STEP E) was combined with 200 mg of lithium hydroxide, 3 mL of tetrahydrofuran and 1 mL of water. The reaction mixture was heated to 55° C. for 6 h, combined with 50 mL of ethyl acetate, 50 mL of 1 M solution of hydrochloric acid. The organic layer was separated, washed with brine, dried over sodium sulfate and concentrated. The title compound was isolated by flash chromatography on silica gel using 10% methanol in dichloromethane as the eluant: 1H NMR (CDCl3) 7.81 (d, J=2.0, 1H), 7.74 (dd, J=2.0, 9.0, 1H), 7.38 (d, J=8.0, 1H), 7.22 (d, J=4.0, 1H), 7.16 (d, J=1.0, 1H), 7.11 (dd, J=1.0, 8.0, 1H), 7.03 (d, J=4.0, 1H), 7.00 (d, J=8.0, 1H), 4.70 (sep, J=1.0, 1H), 3.00 (t, J=1.5, 2H), 2.75 (t, J=1.5, 2H), 2.47 (s, 3H), 1.42 (d, J=1.0, 6H); HPLC A 3.78 min; ESI-MS (m/z)=406.

Provenance & Evidence