[NH2:1][CH2:2][C:3]1([CH2:16][NH2:17])[CH2:8][CH2:7][N:6]([CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH2:5][CH2:4]1.CO.OO.[O-]Cl.[Na+]>O>[CH2:9]([N:6]1[CH2:5][CH2:4][C:3]2([CH2:2][N:1]=[N:17][CH2:16]2)[CH2:8][CH2:7]1)[C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=12.48 g of C-(4-Aminomethyl-1-benzyl-piperidin-4-yl)-methylamine was suspended in 40 mL H2O and 10 mL MeOH and cooled with an ice bath. Simultaneously, 6.7 mL 30% H2O2 (6 equiv.) and 15.2 mL 10% NaClO (2.4 equiv.) were added dropwise. The mixture was stirred at room temperature for 1 hour. The mixture was extracted 2 times with DCM, the combined organic layers were dried over Na2SO4, filtrated and concentrated to yield 2.20 g of a yellow oil which was used without further purification in the subsequent step.
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