反应详情

0.4 g of Raney nickel is added to a solution of 2.37 g (9.31 mmol) of 1-(2-chloro-4-nitrobenzyl)piperidine in 100 mL of THF and hydrogenated at ambient temperature and 3 bar hydrogen. After hydrogen uptake has ended, the catalyst is filtered off and the filtrate is evaporated down. Yield: 1.88 g (90% of theory); C12H17ClN2 (M=224.73); calc.: molecular ion peak (M+H)+: 255/7 (Cl); found: molecular ion peak (M+H)+: 255/7 (Cl); Rf value: 0.20 (silica gel, dichloromethane/methanol (90:10)).

1. filtrationthe catalyst is filtered off
2. customthe filtrate is evaporated down