Propionyl chloride → HCID 22226102, compound

Participants

Reaction Conditions

Reaction Steps

Propionyl chloride (1.44 mL, 16.6 mmol) was added to a stirring solution of 3-ethoxy-5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalene (Intermediate 2, 3.5 g, 15.1 mmol) in dichloromethane (100 mL), and the solution was cooled to 0° C. Aluminum trichloride (2.21 g, 16.6 mmol) was added over two to three minutes, the ice-bath was removed, the yellow solution was stirred for 1 h at room temperature. The solution was poured over ice in a separatory funnel, and the products were extracted three times with ether. The combined organic layers were washed with 10% aqueous sodium hydroxide, brine and dried over magnesium sulfate. The solvent was removed in vacuo to give the title compound as a solid.

Provenance & Evidence