Ammonium Chloride → HCID 67461295, Verbindung

In a nitrogen stream, an n-butyllithium hexane solution (1.59 M, 3.14 mL) was added dropwise to a solution of 2-benzyloxy-1-bromo-4-fluorobenzene (1.4 g, 5.0 mmol) in THF (50 ml) at −78° C. and the mixture was stirred at the same temperature for 15 minutes. To this solution, a solution of 4-methoxybenzaldehyde (680 mg, 4.99 mmol) in THF (15 mL) was added dropwise at −78° C. and the mixture was stirred at the same temperature for 1.5 hours, and then a saturated ammonium chloride aqueous solution was added thereto and the mixture was extracted with ethyl acetate. The organic layer was washed with a saturated sodium chloride aqueous solution and dried (anhydrous magnesium sulfate), and then the solvent was distilled under reduced pressure. The obtained residue was purified by silica gel column chromatography [developing solution=n-hexane:dichloro-methane:acetone (12:3:1)] to obtain the title compound (1.41 g, 83%) as a colorless oil.

1. stirringthe mixture was stirred at the same temperature for 1.5 hours
2. extractionthe mixture was extracted with ethyl acetate
3. washThe organic layer was washed with a saturated sodium chloride aqueous solution
4. dry with materialdried (anhydrous magnesium sulfate)
5. distillationthe solvent was distilled under reduced pressure
6. customThe obtained residue was purified by silica gel column chromatography [developing solution=n-hexane:dichloro-methane:acetone (12:3:1)]

ORD-Eintrag

ord-816c656fa59c4c069bb1f23e3b4fbb39

Quelldatensatz

uspto-grants-2011_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08048897B2