4-Toluenesulfonyl chloride → 1400591-99-2

Participants

Reaction Steps

0.63 g of p-toluenesulfonyl chloride was added to a solution of 0.522 g of ethyl 4-hydroxycyclohexanecarboxylate in 5.0 ml of pyridine. The reaction was stirred at room temperature for 3 hours. The reaction mixture was concentrated in vacuo. The resulting solid was taken up in water and ethyl acetate, and the organic phase was washed three times with 2N hydrochloric acid and once with saturated NaCl solution. The organic phase was dried over sodium sulfate and concentrated in vacuo. The resulting product was employed without further purification in the next step. The resulting product (0.55 g) was dissolved in 11.2 ml of DMF, and 0.159 g of phenol and 0.549 g of cesium carbonate were added. The solution was then heated at 80° C. for 6 hours. After cooling, the mixture was concentrated in vacuo and purified by column chromatography on silica gel (eluent: ethyl acetate/n-heptane 1:1). The desired product was obtained. Molecular weight 248.32 (C15H20O3), MS: 249 (M+H+).

Provenance & Evidence