HCID 15388860, compound → HCID 15388861, compound

Participants

Reaction Conditions

Reaction Steps

Dissolved 2-ethoxy-2-[10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-yl]-N,N-dimethyl-acetamide (4.45 g, 13.8 mmol) in 100 mL of dry tetrahydrofuran, and added lithium aluminum hydride (0.6 g, 15.8 mmol) portionwise under a nitrogen atmosphere. Heated the reaction mixture at 60° C. for 2 hours. Cooled to 0° C., and carefully added 0.6 mL of water, 0.6 mL of 15 weight % NaOH, and then 1.8 mL of water in order to precipitate aluminum salts. Filtered precipitate, and washed with tetrahydrofuran. Evaporated filtrate, and purified the crude product by flash chromatography on silica gel eluting with 1:1 ethyl acetate:hexane. Combined appropriate fractions, and evaporated to give 3.44 g (81% yield) of β-ethoxy-10,11-dihydro-N, N-dimethyl-5 H-dibenzo[a,d]cycloheptene-5-ethanamine as a colorless oil. Dissolved free base in ethyl acetate, and added one equivalent of maleic acid dissolved in methanol. Evaporated, and added ether to precipitate maleate salt.

Provenance & Evidence