In a manner similar as described above in Paragraph A, a solution of hexahydro-1-[[4-(phenylmethoxy)phenyl]methyl]-1H-1,4-diazepine (150 mg, 0.506 mmol) and methyl 4-bromobutanoate (0.29 mL, 2.0 mmol) in THF (6 mL) was treated with triethylamine (0.28 mL, 2 mmol) and the reaction was heated at reflux for 4 hours. The reaction was allowed to cool and treated with an aqueous bicarbonate solution. The combined ethyl acetate extracts were washed with water, dried and concentrated to give 0.16 g of methyl hexahydro-4-[[4-(phenylmethoxy)phenyl]methyl]-1H-1,4-diazepine-1-butanoate.
