3-Benzoylpropionic acid → trans-2-[(3-benzoyl)propionyl]-5-phenyl-2,3,4,4a,5,9b-hexahydro-1H-pyrido[4,3-b]indole

Beteiligte Stoffe

Reaktionsschritte

To the suspension arising from the admixture of 865 mg. (4.20 mmole) of dicyclohexylcarboiimide and 748 mg. (4.20 mmole) of 3-benzoylpropionic acid in 30 ml. of dichloromethane at 0° C. was added 1.0 g. (4.0 mmole) of dl-trans-5-phenyl-2,3,4,4a,5,9b-hexahydro-1H-pyrido[4,3-b]indole in 10 ml. of the same solvent. The resulting mixture was stirred and allowed to warm to room temperature over 2 hours. After cooling again to 0° C. the reaction mixture was filtered, washed with dichloromethane and the filtrates evaporated to obtain a residue of dl-trans-2-[(3-benzoyl)propionyl]-5-phenyl-2,3,4,4a,5,9b-hexahydro-1H-pyrido[4,3-b]indole which was used without purification in the next step.

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