Ammonia → 9-Aminobicyclo[3.3.1]nonane-9-carbonitrile

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Add successively 21 mL of water, 1.12 g (22.8 mmol) of sodium cyanide, 4.52 mL (54.27 mmol) of 12N aqueous ammonia solution and 2.32 g (43.41 mmol) of NH4Cl to a solution of 3 g (21.7 mmol) of bicyclo[3.3.1]nonan-9-one in 40 mL of EtOH. Stir the reaction mixture for 18 h at 50° C. Then add 5 mL of 12N aqueous ammonia solution and heat the mixture again for 4 h at 50° C. Cool the solution to RT then distribute in 100 mL of a 1:1 mixture of ether/1N aqueous soda solution. After extraction, wash the organic phase with 3×50 mL of water, dry over Na2SO4 and concentrate under reduced pressure. Take up the residue obtained in 50 mL of ether and then treat for 1 minute with a gentle stream of hydrogen chloride. Filter the hydrochloride thus obtained, wash with 20 mL of ether and distribute in 100 mL of a 1:1 mixture of DCM/saturated aqueous solution of Na2CO3. Extract the aqueous phase again with 50 mL of DCM, then combine the organic phases, wash with 2×20 mL of water and dry over Na2SO4. After concentration under reduced pressure, we obtain 1.88 g of 9-aminobicyclo[3.3.1]nonane-9-carbonitrile in the form of oil.

Herkunft & Nachweise