4'-Hydroxypropiophenone → Ifenprodil

Beteiligte Stoffe

Reaktionsschritte

To 10 ml of ethanol were added 6.0 g of 4'-hydroxypropiophenone. 6.4 Grams of bromine were added dropwise to the mixture with stirring at room temperature and the reaction liquid was stirred for an additional 10 minutes. To the reaction liquid were then added 7.5 g of 4-benzylpyridine, 100 ml of ethanol and 3.28 g of anhydrous sodium acetate, and the mixture was refluxed under heating for 5 hours. After replacing the air in the reaction container with nitrogen gas, 2.0 g of 10% palladium-carbon were added and hydrogen was then introduced and the mixture was then treated in the same manner as described in Example 20, whereby 8.5 g (55.1%) of ifenprodil were obtained as white crystals.

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