Hydrochloric Acid → HCID 54257517, compound

Participants

Reaction Steps

A solution of 4-(4-carbomethoxythien-2-ylethynyl)-4-(3-cyclopentyloxy-4-methoxyphenyl)cyclohexan-1-one (0.12 g, 0.427 mmol) and coarsely ground potassium hydroxide (0.045 g, 0.81 mmol) in tetrahydrofuran (2.5 mL), methanol (2.5 mL), and water (0.5 mL) was stirre at room temperature under an argon atmosphere for three days. 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 0.25:2.5:97.5 acetic acid:methanol:dichloromethane, provided 4-(4-carboxythien-2-ylethynyl)-4-(3-cyclopentyloxy-4-methoxyphenyl)cyclohexan-1-one as an off- white foam (0.11 g, 94%), mp 75°-76° C. Anal. (C25H26O5S.0.25 H2O) calcd: C, 67.78; H, 6.03; found: C, 67.73; H, 5.80.

Provenance & Evidence