Trifluoroacetic acid → HCID 6558968, compound

Participants

Reaction Steps

A catalytic amount of trifluoroacetic acid was added to a solution of 1-cyclohexene-1-carboxylic acid methyl ester (25.0 g, 178 mmol) and N-benzyl-N-(methoxymethyl)-N-trimethylsilylmethylamine (46.6 g, 196 mmol) in 1,2-dichloroethane (178 mL) at room temperature, and the mixture was stirred at room temperature for two hours. A saturated sodium bicarbonate solution (200 mL) was added to the reaction solution, followed by extraction with chloroform (150 mL×1, 100 mL×1). The organic layer was washed with brine (450 ml) and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=100:0→90:10→85:15→75:25) to give 21.3 g of the title compound.

Provenance & Evidence