p-Anisoyl chloride → HCID 9863606, compound

Participants

Reaction Conditions

Reaction Steps

Tin tetrachloride (7.6 mL, 65.2 mmnol) was added dropwise to a −78° C., stirred solution of benzo[b]thiophen-2-yl-(2,3-dimethyl-furan-5-yl)-methane (3.96 g, 16.3 mmol) and anisoyl chloride (3.07 g, 17.93 mL) in carbon disulfide (100 mL) under a try N2 atmosphere over a period of 30 min. After the addition completed, the solution was allowed to warm to 0° C. After 9 h. the reaction mixture was carefully quenched with and further diluted with water (350 mL). Aqueous mixture was extracted with ethyl ether. The ethyl ether extracts were washed with water, 10% aqueous sodium bicarbonate and water and dried with brine. Silica gel (90 mL) was added. Solvents were removed and the silica adsorbate was flash chromatographed (eluent 99:1 petroleum ether:ethyl acetate) to provide the title compound as a light yellow solid (1.1 g, 25%): NMR (CDC13); δ 7.81 (s, 1H), 7.76 (d, J=8, Hz, 1H), 7.36-7.24 (m, 3H), 7.11-7.00 (m, 3H), 6.85 (d, J=8 Hz, 1H), 3.96 (s, 3H), 2.37 (s, 3H), 1.55 (s, 3H); MS (EI): [M+], 358.

Provenance & Evidence