1-N-cyclohexyl-4-(piperidin-1-ylmethyl)benzene-1,2-diamine

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: N1-cyclohexyl-4-(piperidin-1-ylmethyl)benzene-1,2-diamine from step3 in methanol (200 mL) was added to a mixture of 5 M cyanogen bromide in acetonitrile (3.2 mL) and water (100 mL) dropwise over 1 hr with stirring. After 4.5 hr total reaction time, the mixture was evaporated to dryness. The residue was purified by preparative HPLC chromatography to yield 2.23 g of the title compound as the bis-TFA salt. the mixture was evaporated to dryness The residue was purified by preparative HPLC chromatography