Water → HCID 68682483, compound

Participants

Reaction Steps

To 1-(cyclopropyl-hydroxy-methyl)-4-cyclopropylmethanesulfonyl-cyclohexanecarbonitrile (1.90 g; 6.39 mmol) in 2 M ammonia in methanol solution (20 ml) (nitrile did not dissolve) under a nitrogen atmosphere was added Raney Nickel (approx. 1 ml of 50% aqueous slurry). The resulting mixture was agitated under an atmosphere of hydrogen (50 psi) on a Parr apparatus for 40 hours. MS indicated that very little reduction of the nitrile had taken place. The mixture was filtered through a catalyst filter and the catalyst washed extensively with MeOH (300 ml, added in portions). The filtrate was evaporated in vacuo to give a greeny-white solid, which was transferred to the Parr flask as a suspension in EtOH (20 ml). Aqueous ammonia solution (1.5 ml) was added followed by Raney Nickel (approx. 1 ml of 50% aqueous slurry). The resulting mixture was agitated under an atmosphere of hydrogen (50 psi) on a Parr apparatus for 24 hours. MS indicated the presence of starting material (m/z=320, [M+Na]+), a small amount of product (m/z=302) and product with water eliminated (m/z=284). The mixture was filtered and the catalyst washed as before. The filtrate was evaporated in vacuo to give a greeny-white solid, which was triturated with MeOH and collected by filtration as a white solid (775 mg). NMR indicated that this was recovered starting material. The trituration filtrate was evaporated in vacuo and the residue was loaded in MeOH on to a SCX cartridge. The cartridge was washed with several column lengths of MeOH followed by 2M ammonia in methanol solution to elute the amine. The desired product was obtained as a green oil upon evaporation of the appropriate fractions (229 mg). m/z=302 (M+H+).

Provenance & Evidence