Benzophenone imine → HCID 68832310, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-(4-bromophenyl)tetrahydro-2H-pyran-4-carbonitrile (1.7 g) obtained in Step A of Example 150, diphenylmethanimine (1.4 g), tris(dibenzylideneacetone)dipalladium(0) (88 mg) and 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (130 mg) in toluene (50 mL) was added sodium 2-methylpropan-2-olate (920 mg) under nitrogen atmosphere, and the mixture was stirred at 90° C. for 10 hr. The reaction mixture was diluted with ethyl acetate, and the insoluble substance was removed by filtration through Celite. The filtrate was concentrated, and to a solution of the residue in methanol (10 mL) were added hydroxylamine hydrochloride (440 mg) and sodium acetate (530 mg). The mixture was stirred at room temperature for 30 min, and 0.1 M aqueous sodium hydroxide solution and ethyl acetate were added thereto. The solvent was evaporated under reduced pressure, and the reaction mixture was poured into water, and extracted with ethyl acetate. The obtained organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate) to give the title compound (910 mg).

Provenance & Evidence