C([N:14]1[CH2:17][CH:16]([N:18]2[CH:22]=[CH:21][N:20]=[CH:19]2)[CH2:15]1)(C1C=CC=CC=1)C1C=CC=CC=1.[ClH:23].[H][H]>CO.O.[Pd]>[ClH:23].[ClH:23].[N:18]1([CH:16]2[CH2:17][NH:14][CH2:15]2)[CH:22]=[CH:21][N:20]=[CH:19]13.20 g of 1-benzhydryl-3-(1-imidazolyl)azetidine [prepared as described in step (a) above] were dissolved in 30 ml of methanol, and 8.90 ml of a 10% w/v solution of hydrogen chloride in methanol were added to the resulting solution. 1.60 g of a 20% w/w palladium hydroxide-on-carbon catalyst were then added to the mixture, after which the mixture was hydrogenated at 50° C. for 40 minutes in an atmosphere of hydrogen. The catalyst was then removed by filtration and the filtrate was concentrated by evaporation under reduced pressure. The resulting residue was washed with diethyl ether and dried under reduced pressure, to obtain 2.03 mg of the title compound, as a powder.
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