反应详情

Bc) 19.3 g of the mandelic acid salt obtained under Bb) are suspended in 193 ml of DMF, treated with 21.7 ml of triethylamine and 7.75 g of formamidinesulfonic acid and stirred at room temperature. The reaction mixture is evaporated and the residue is chromatographed on RP-18 silica gel with a water-acetonitrile gradient. There are isolated 13.4 g of (S)-N-[1-(amino-imino-methyl)-piperidin-3-ylmethyl]-benzamide (R)-hydroxy-phenyl-acetate (1:1), MS (FAB): 218 M-(H2N--CN).

1. customThe reaction mixture is evaporated
2. customthe residue is chromatographed on RP-18 silica gel with a water-acetonitrile gradient