Ethyl Acetate → HCID 69203345, compound

Participants

Reaction Steps

2,5-Dimethoxytetrahydrofuran (0.2 g, 1.7 mmol) was added to a stirred solution of 3-(3-amino-4-methoxy-phenyl)-3-(3-ethoxy-4-methoxy-phenyl)-acrylonitrile (0.5 g, 1.5 mmol) in acetic acid (10 mL). The reaction mixture was heated to reflux under nitrogen for one hour. The mixture was cooled down to room temperature. The mixture was stirred with EtOAc (100 mL) and saturated NaHCO3 (40 mL) was added slowly. The EtOAc solution was washed with water (60 mL), brine (60 mL) and dried (MgSO4). Solvent was removed and the residue was purified by flash chromatography (silica gel, Hexane:EtOAc 6:4) to afford mixture of isomers of 3-(3-ethoxy-4-methoxy-phenyl)-3-(4-methoxy-3-pyrrol-1-yl-phenyl)-acronitrile (0.4 g, 60%) as a white solid: mp 109-111° C.; 1H NMR (CDCl3) δ 7.00 (m, 2H), 7.47-6.81 (m, 6H), 6.30 (m, 2H), 5.59 (5.57) (s, 1H), 4.05 (m, 2H), 3.91 (m, 6H), 1.45 (m, 3H); 13C NMR (CDCl3) δ 161.67(161.61), 153.93(154.35), 151.56(151.00), 148.27(148.00), 131.40(132.10), 129.83(130.06), 129.03(127.16), 125.93(127.93), 123.07, 122.21, 122.05(121.93), 118.52(118.43), 114.00, 112.01(112.06), 111.09(112.70), 109.15(109.28), 92.45, 64.56, 56.05(56.00), 14.69; Anal. Calcd for C23H22N2O3. Theoretical: C, 73.78; H, 5.92, N, 7.48. Found: C, 73.46; H, 5.71; N, 7.35.

Provenance & Evidence