反应详情

A solution of 6.8 g of isobutyl 2-(4-chlorophenyl)-3-nitro-propyl(methyl)phosphinate in 80 ml of ethanol is added to 64 g of an 8% solution of ammonia in ethanol. To this are added 8 ml of Raney Nickel slurry and the resulting mixture is hydrogenated at 1 bar until hydrogen uptake ceases. The mixture is then filtered and the filtrate is concentrated under reduced pressure to give isobutyl 3-amino-2-(4-chlorophenyl)-propyl(methyl)phosphinate as a viscous oil, 31P N.M.R. spectrum: δ=+54.0 and +53.4 ppm (CDCl3).

1. filtrationThe mixture is then filtered
2. concentrationthe filtrate is concentrated under reduced pressure