Triethylamine → HCID 67284191, compound

Participants

Reaction Steps

A solution of ethyl chloroformate (0.071 g, 0.65 mmol) in dichloromethane (0.5 ml) is added dropwise to a solution of (1RS,2SR,6RS,7SR)-4-(2,6-diethyl-4-methylphenyl)-10-oxatricyclo[5.2.1.02,6]decane-3,5-dione (0.172 g, 0.55 mmol) in dichloromethane (2 ml) at 0° C. and the reaction mixture is stirred. A solution of triethylamine (0.066 g, 0.65 mmol) in dichloromethane (1 ml) is added and the reaction mixture is stirred at room temperature for 17 hours, warming slowly to room temperature. The reaction mixture is diluted with dichloromethane (3 ml) and washed with saturated aqueous sodium bicarbonate solution. The organic phase is separated, dried over anhydrous magnesium sulfate, filtered and the filtrate evaporated under reduced pressure. The residue is purified by column chromatography on silica gel to give carbonic acid (1RS, 2SR,6RS,7SR)-5-oxo-4-(2,6-diethyl-4-methylphenyl)-10-oxatricyclo-[5.2.1.02,6]-dec-3-en-3-yl ester ethyl ester as a colourless solid.

Provenance & Evidence