Hydrochloric Acid → HCID 54262504, compound

Participants

Reaction Steps

A solution of 4-(2-carbomethoxythien-4-ylethynyl)-4-(3-cyclopentyloxy-4-methoxyphenyl)cyclohexan-1-one (0.19 g, 0.43 mmol) and coarsely ground potassium hydroxide (0.036 g, 0.64 mmol) in tetrahydrofuran (2 mL), methanol (2 mL), and water (0.4 mL) was stirred at room temperature under an argon atmosphere for 24 h. The reaction was acidified (10% HCl), was extracted three times with 5:95 methanol:dichloromethane, was dried (magnesium sulfate) and was evaporated. Purification by flash chromatography, eluting with 0.1:3:97 acetic acid:methanol:dichloromethane, provided 4-(2-carboxythien-4-ylethynyl)-4-(3-cyclopentyloxy-4-methoxyphenyl)cyclohexan-1-one as an off-white solid (0.18 g, 95%), mp 80°-82° C. Anal. (C25H26O5S.0.25 H2O) calcd: C, 67.78; H, 6.03; found: C, 67.72; H, 6.02.

Provenance & Evidence