2-[(4-methoxyphenyl)methyl]pyrrolidine

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Add 80 ml of trifluoroacetic acid to 15 g of the title compound of Example 17 with ice cooling, and stir the produced reaction mixture for 2 hours at room temperature. Distil off the acid under a vacuum. Dissolve the resulting residue in 250 ml of diethyl ether and wash the thus-prepared solution with almost saturated cold sodium carbonate solution (150 ml) and saturated sodium chloride solution. Dry the washed solution over sodium sulfate and distil off the ether before dissolving the residue in 300 ml of ethanol and reducing it with Raney nickel/hydrogen. Concentrate the reduced solution to an oil and distil the oil under a vacuum to obtain 7.5 g (76% of theory) of the title compound (b.p. 88° to 90° at 0.008 mm of Hg). the produced reaction mixture for 2 hours at room temperature Distil off the acid under a vacuum Dissolve the resulting residue in 250 ml of diethyl ether wash the thus-prepared solution with almost saturated cold sodium carbonate solution (150 ml) and saturated sodium chloride solution Dry the washed solution over sodium sulfate distil off the ether before dissolving the residue in 300 ml of ethanol Concentrate the reduced solution to an oil distil the oil under a vacuum