Potassium Carbonate → HCID 50852345, compound

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Reaction Steps

A mixture of 2-(1-piperazinyl)-3-pyridinecarboxylic acid ethyl ester (4.6 g, 0.019 mol), 3-(10,11 -dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-propyl methanesulfonate (5.0 g, 0.015 mol) and potassium carbonate (4.8 g) in N,N-dimethylformamide (50 ml) was heated to 60° .C for 5 h. After standing overnight, the solid was filtered off and washed with benzene. The filtrate was diluted with benzene (200 ml) and washed with water (4×100 ml). The organic solution was dried (MgSO4) and the solvent evaporated in vacuo. The residue (7.8 g) was purified by column chromatography on silica gel using benzene and a benzene-ethyl acetate mixture as eluents, affording 2-(4-(3-(10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene) -1-propyl)-1-piperazinyl)-3-pyridinecarboxylic acid ethyl ester (3.4 g, 48%) as an oil.

Provenance & Evidence