Acetophenone 2,5-dihydroxy-6-methoxy

Me ether 2,4-Dihydroxy-6-methoxy-3,5-bis 3-methyl-2-butenyl)acetophenone. 2,4-Dihydroxy-6-methoxy-3,5-diprenylacetophenone C19H26O4 M 318.412 Constit. of Acronychia pedunculata. Yellow oil. [Pg.429]

Preparation by bromination of 2,4-dihydroxy-3-methoxy-acetophenone with bromine in 80% acetic acid at r.t. (64%) [1989]. [Pg.741]

Obtained by treatment of 2,6-dihydroxy-4-methoxy-acetophenone with methoxymethyl chloride [3293] in the presence of potassium carbonate in refluxing acetone for 2 h (86%) [3112],... [Pg.888]

Preparation by adding of an ethereal solution of diazomethane to a methanolic solution of phloro-acetophenone (25%) [2437] this compound was obtained from 3,5-dimethylphloroacetophenone or from 2,6-dihydroxy-4-methoxy-3,5-dimethylace-tophenone in the same conditions [2437]. [Pg.929]

Preparation by condensation of 2,4-dihydroxy-6-methoxy-acetophenone with 1,3-butadiene in the presence of 85% orthophosphoric acid in xylene at 30-35° (41%) [3325]. [Pg.945]

COCH3 Obtained by tnealment of 2,4-dihydroxy-5-methoxy-acetophenone with 3-chloro-3-methyl-l-butyne in the presence of potassium carbonate and potassium iodide in DMF for 40 h at 80-85° (15%) [3544], Yellow oil [3544] TLC [3544] >H NMR [3544], UV [3544]. [Pg.977]

Preparation by reaction of 2-methyl-2-chlo-robut-3-yne on 2,4-dihydroxy-6-methoxy-acetophenone with potassium carbonate and potassium iodide in refluxing acetone (80%) [3545]. [Pg.977]

Preparation by reaction of prenyl bromide with 2,4-dihydroxy-6-methoxy-acetophenone in the presence of methanoUc potassium hydroxide (major product) [2834], (27%) [2835]. [Pg.983]

Preparation by catalytic hydrogenolysis of 3-(o-benzyloxybenzyl)-2,4-dihydroxy-6-methoxy-acetophenone at r.t. and atmospheric pressure in the presence of 10% Pd/C in ethyl acetate (66%) [2325]. [Pg.1022]

C0CH3 - Preparation by methyla-tion of 3-geranyl-2,4-dihydroxy-5-methoxy-OCH3 acetophenone or of... [Pg.1062]

COCH3 - Obtained by treatment of 2,4-dihydroxy-6-methoxy-acetophenone with aceto-(Ac)4-P-D-G1c-0 OCH3 bromo-a-D-glucose,... [Pg.1080]

Also obtained by reaction of a,a-dimethylallyl alcohol with 2,6-dihydroxy-4-methoxy-acetophenone in the presence of boron trifluoride etherate in dioxane for 2 h [4339]. [Pg.1185]

Obtained by iodination of 2,4-dihydroxy-a-methoxy-acetophenone with iodine and periodic acid in ethanol for 2 h at r.t. (74%) [4819]. [Pg.1321]

Obtained by reaction of trifluoromethanesul-fonic anhydride (triflic anhydride) with2, 4 -dihydroxy-2-methoxy-acetophenone in the presence of 2,6-lutidine in methylene chloride at 0° for 2 h under argon atmosphere (87%) [6169],... [Pg.1684]

Acetyl-3 -hydmxy-5 -methoxy-4 -methylphenoxy)-2, 4 -dihydroxy-6 -met hoxy-5 -methyl-acetophenone (Leprolomin)... [Pg.1726]

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