Trifluoroacetic acid → HCID 19868620, compound

Participants

Reaction Conditions

Reaction Steps

Reflux a solution of 2-acetyl-1-[3,5-bis(methoxy)benzoyl]piperidine (4.62 g), trifluoroacetic acid (3 ml), and carbon tetrachloride (97 ml) for 20 hours under nitrogen. Cool the solution to 25° C., and sequentially wash it with water, 1M sodium bicarbonate solution, and with water. Concentrate the dried, filtered organic solution, and cool it to induce crystallization. Recrystallize the resulting solid to obtain 8,10-bis(methoxy)-1,2,3,4-tetrahydro-11-methyl-6H-benzo[b]quinolizin-6-one, m.p. 165°-168° C. (from EtOAc).

Provenance & Evidence