Water → HCID 11641897, compound

Participants

Reaction Steps

150 mg of ethyl 3″-tert-butyl-4″-diethylamino-4′-vinyl[1,1′;3′,1″]terphenyl-4-carboxylate obtained in Example 32b are dissolved in 10 mL of dichloromethane under a nitrogen atmosphere. 45 mg of N-methylmorpholine are added to the reaction medium, and 0.5 mL of a commercial 2.5% solution of osmium tetroxide in water is then added dropwise and the reaction medium is stirred at room temperature for 3 hours. The reaction is then stopped by adding 10 mL of water and extracted with dichloromethane. The organic phase is washed with water, dried over magnesium sulfate and filtered through a sinter funnel. The solvent is evaporated off and the residue obtained is purified by chromatography on silica (eluent: 7/3 heptane/ethyl acetate). 20 mg of ethyl 3″-tert-butyl-4″-diethylamino-4′-(2,3-dihydroxypropyl)-[1,1′;3′,1″]terphenyl-4-carboxylate are obtained in the form of a white solid.

Provenance & Evidence