Ammonium Chloride → 2-Methyl-1-phenoxy-2-propanol

To a stirred solution of 24.2 g (0.16 mole) of phenoxy-2-propanone (Eastman) in 150 mL of dry ethyl ether was added 56 ml (0.17 mole) of methylmagnesium bromide (3.0M solution in ethyl ether, Aldrich) and the reaction mixture was stirred at ambient temperature under a nitrogen atmosphere for 4 hr. The reaction mixture was treated with 100 ml of saturated ammonium chloride solution and vigorously stirred for 1 hr. The layers were separated and the organic layer was washed twice with 200 ml portions of water, dried (magnesium sulfate) and the solvent evaporated under reduced pressure to yield 24.3 g (91%) of a vicous oil. A 2.3 g sample of the oil was purified by high pressure liquid chromatography (Waters Associates Prep LC/System 500 A, PrePAK 500/silica, ethyl acetate-hexanes, 1:20, flow rate 150 ml/min). The desired fractions were combined and the solvents evaporated under reduced pressure to yield 2.1 g (91% recovery) of the title compound as a colorless liquid.

1. stirringvigorously stirred for 1 hr
2. customThe layers were separated
3. washthe organic layer was washed twice with 200 ml portions of water
4. dry with materialdried (magnesium sulfate)
5. customthe solvent evaporated under reduced pressure

ORD-Eintrag

ord-d24d54f071a64d79897b34f899bc6728

Quelldatensatz

uspto-grants-1993_12

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05273993