C(O[CH:5]([C:8]1[C:9]([F:14])=[N:10][CH:11]=[CH:12][CH:13]=1)[CH2:6][CH3:7])(=O)C.[H][H]>C(O)C.[Pd]>[CH2:5]([C:8]1[C:9]([F:14])=[N:10][CH:11]=[CH:12][CH:13]=1)[CH2:6][CH3:7]3.50 g (17.7 mmol) of the product from example 49A are dissolved in 30 ml of ethanol and admixed with 2.00 g of 10% palladium on activated carbon. Hydrogenation is effected overnight in a hydrogen atmosphere under standard pressure. The mixture is filtered with suction, washed with ethanol and concentrated cautiously under reduced pressure. This affords 1.9 g of approx. 89% pure product (69% of theory), which is converted further without purification.
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