反应详情

To a solution of 6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepine in acetonitrile are added aqueous formaldehyde solution and 2,2-dimethyl-1,3-dioxane-4,6-dione with stirring and the mixture is heated for 4 hours. After the completion of the reaction, the reaction mixture is poured into water and the mixture is extracted with chloroform, washed with water, and dried over magnesium sulfate. The solution is concentrated under reduced pressure and the resulting 2,2-dimethyl-5-(6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-3-ylmethyl)-1,3-dioxane-4,6-dione is dissolved in pyridine with sting. Water and copper powder are added and the mixture is refluxed under heating for 3 hours. After the completion of the reaction, the reaction mixture is filtered while it is hot and the solvent is evaporated under reduced pressure to give 3-(6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-3-yl)propionic acid. To a solution of this compound in dimethylformamide are added 4-(4-chlorophenyl)piperidine, triethylamine and cyanophosphonic acid diester and the mixture is stirred at room temperature. After the completion of the reaction, the reaction mixture is poured into water and the mixture is extracted with chloroform, washed with water, and dried over magnesium sulfate. The solution is concentrated under reduced pressure and the resulting 1-(4-(4-chlorophenyl)piperidin-1-yl)-3-(6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-3-yl)propan-1-one is dissolved in tetrahydrofuran and lithium aluminum hydride is added under ice-cooling with stirring and the mixture is stirred at room temperature for 1 hour. After the completion of the reaction, the reaction mixture is poured into water and the mixture is extracted with chloroform, washed with water, and dried over magnesium sulfate. The solution is concentrated under reduced pressure and the obtained residue is subjected to silica gel column chromatography to give 3-(3-(4-(4-chlorophenyl)piperidin-1-yl)propyl)-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepine.

1. temperaturethe mixture is heated for 4 hours
2. customAfter the completion of the reaction
3. extractionthe mixture is extracted with chloroform
4. washwashed with water
5. dry with materialdried over magnesium sulfate
6. concentrationThe solution is concentrated under reduced pressure
7. dissolutionthe resulting 2,2-dimethyl-5-(6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-3-ylmethyl)-1,3-dioxane-4,6-dione is dissolved in pyridine with sting
8. additionWater and copper powder are added
9. temperaturethe mixture is refluxed
10. temperatureunder heating for 3 hours
11. customAfter the completion of the reaction
12. filtrationthe reaction mixture is filtered while it
13. customthe solvent is evaporated under reduced pressure