Benzophenone imine → HCID 86671406, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of tert-butyl (RS)-2-(4-bromo-3-chlorophenyl)morpholine-4-carboxylate (0.50 g) and benzophenone imine (253 mg) in toluene (5 ml) was added sodium tert-butoxide (204 mg). The reaction mixture was purged with argon for 10 min. (R)-(+)-2,2′-Bis(diphenylphosphino)-1,1′-binaphthyl (82.7 mg) and tris(dibenzylideneacetone)dipalladium(0) (36.5 mg) were added and the reaction mixture was heated at 90° C. overnight. The reaction mixture was poured into EtOAc and extracted sequentially with dilute aq. HCl, water and saturated brine. The organic layer was dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography (silica gel; gradient: 0% to 50% EtOAc in hexanes) to afford tert-butyl (RS)-2-(3-chloro-4-(diphenylmethyleneamino)phenyl)morpholine-4-carboxylate (639 mg, quant.) as a yellow oil. MS (ISP): 479.1 ([{37Cl}M+H]+), 477.1 ([{35Cl}M+H]+).

Provenance & Evidence