1-(2,3-dimethoxy-6,7-dihydro-5H-benzocyclohepten-8-ylcarbonyl)-4-(3,4,5-trimethoxybenzoyl)piperazine → 1-(2,3-Dimethoxy-5,6,7,8-tetrahydrobenzocyclohepten-6-ylcarbonyl)-4-(3,4,5-trimethoxy-benzoyl)piperazine

Beteiligte Stoffe

Reaktionsschritte

To a solution of 1-(2,3-dimethoxy-6,7-dihydro-5H-benzocyclohepten-8-ylcarbonyl)-4-(3,4,5-trimethoxybenzoyl)piperazine (1.0 g) obtained in Example 62 in ethanol (50 ml) is added 10% palladium-carbon (50 mg), followed by catalytic reduction in a stream of hydrogen. The reaction mixture is filtered off, and the filtrate is concentrated under reduced pressure. To the residue is added ether, and the mixture is stirred to obtain 1-(2,3-dimethoxy-5,6,7,8-tetrahydrobenzocyclohepten-6-ylcarbonyl)-4-(3,4,5-trimethoxy-benzoyl)piperazine as a colorless powder.

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