Sodium Carbonate → 6-Cyclopropyl-3-ethoxy-2,2',4'-trifluorobiphenyl-4-carbaldehyde

Cyclopropylboronic acid (0.77 g), a 2 M aqueous sodium carbonate solution (5.94 mL), tris(dibenzylideneacetone)dipalladium(0) (0.272 g), and dicyclohexyl(2′,6′-dimethoxybiphenyl-2-yl)phosphine (0.244 g) were added at room temperature to a toluene (20 mL) solution of 6-bromo-3-ethoxy-2,2′,4′-trifluorobiphenyl-4-carbaldehyde (1.07 g), and the mixture was stirred at 100 C for 15 hours in an argon atmosphere. Water was added to the reaction mixture at room temperature, and then, the mixture was filtered through celite. The filtrate was subjected to extraction with ethyl acetate. The organic layer was separated, then washed with water and saturated saline in this order, and dried over anhydrous magnesium sulfate, and then, the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate) to obtain the title compound (904 mg).

1. filtrationthe mixture was filtered through celite
2. extractionThe filtrate was subjected to extraction with ethyl acetate
3. customThe organic layer was separated
4. washwashed with water and saturated saline in this order
5. dry with materialdried over anhydrous magnesium sulfate
6. distillationthe solvent was distilled off under reduced pressure
7. customThe obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate)

ORD-Eintrag

ord-9afe295a6adf44a58afe54378b0edd0f

Quelldatensatz

uspto-grants-2015_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09120777B2