Potassium Carbonate → 4-{Bis[4-(trifluoromethyl)phenyl]methylene}-1-[(4-nitrophenyl)methyl]piperidine

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of 3.8 grams (0.010 mole) of 4-{bis[4-(trifluoromethyl)phenyl]methylene}piperidine, 2.2 grams (0.010 mole) of 4-nitrophenylmethyl bromide, and 1.7 grams (0.012 mole) of potassium carbonate in about 20 mL of ethanol was warmed to 75° C., where it stirred for about 18 hours. After this time, an additional 0.2 gram (0.001 mole) of 4-nitrophenylmethyl bromide and an additional 0.2 gram (0.001 mole) of potassium carbonate was added to the reaction mixture. The reaction mixture was again heated to 75° C., where it stirred for about eight hours. After this time, the reaction mixture was cooled and filtered to remove excess potassium carbonate. The reaction mixture was then taken up in acetic acid, and 0.2 gram (catalyst) of 5% platinum on carbon was added to the mixture in preparation for the following hydrogenation step. A quantitative yield of the subject compound was assumed.

Provenance & Evidence