Nitric Acid → HCID 13755073, compound

Participants

Reaction Steps

2.24 ml of fuming nitric acid were added dropwise with stirring to 14.3 g of the product of Step C in 50 ml of trifluoroacetic acid at 0° C. The temperature was allowed to return to ambient and the mixture was stirred for 1 hour. After pouring the mixture on ice, extracting with methylene chloride, washing with water, drying, evaporating to dryness under reduced pressure, and purifying by chromatography over silica (eluent benzene--ethyl acetate 9-1), 12.3 g of 3-(4-methoxy-3-nitrophenyl)-1-(trifluoroacetyl)-piperidine were obtained which after crystallization from isopropyl ether melted at 96° C.

Provenance & Evidence