反应详情

To a suspension of sodium hydride (0.42 g, 8.6 mmole) in THF (5.0 ml) is added a solution of 4,5,6,7-tetrahydro-thieno[3,2-c]pyridine (1.0 g, 7.2 mmole), prepared, for example, as described in Example A-2, in THF (10 ml). The mixture is stirred under a nitrogen atmosphere at room temperature for 30 minutes and o-chlorobenzyl chloride (1.74 g, 10.8 mmole) is added. After stirring at room temperature for 90 minutes, toluene (15 ml) is added and the mixture is heated to reflux for 15 to 20 hours. Disappearance of starting material is confirmed by TLC. The mixture is then cooled to room temperature and acidified with 40 ml 1N hydrochloric acid. The organic layer is separated. The aqueous layer is extracted with 50 ml of toluene. The aqueous layer is then separated and basified with dilute aqueous sodium hydroxide to pH 13-14. The product is extracted into methylene chloride (3×40 ml). The methylene chloride extracts are washed (1×50 ml water) and 1×50 ml salt solution) then dried over anhydrous magnesium sulfate and concentrated to give the desired product.

1. stirringAfter stirring at room temperature for 90 minutes
2. temperaturethe mixture is heated
3. temperatureto reflux for 15 to 20 hours
4. temperatureThe mixture is then cooled to room temperature
5. customThe organic layer is separated
6. extractionThe aqueous layer is extracted with 50 ml of toluene
7. customThe aqueous layer is then separated
8. extractionThe product is extracted into methylene chloride (3×40 ml)
9. washThe methylene chloride extracts are washed (1×50 ml water) and 1×50 ml salt solution)
10. dry with materialthen dried over anhydrous magnesium sulfate
11. concentrationconcentrated