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ChemicalBook CAS DataBase List 2,4-Dimethoxyacetophenone

2,4-Dimethoxyacetophenone synthesis

5synthesis methods
Obtained by reaction of dimethyl sulfate with resacetophenone in the presence of 10% aqueous sodium hydroxide (61%).
-

Yield:-

Reaction Conditions:

with sodium carbonate;dimethyl sulfate in water

Steps:

11 EXAMPLE 11
EXAMPLE 11 10 g of acetovanillone (0.06 mol) was methylated with 10.25 g of dimethyl sulfate (0.083 mol) and 8.0 g of sodium carbonate. The reaction mixture was stirred at 80°-90° C for 2 hr. while 6 ml of water were added dropwise over the last 1.2 hr. Addition of water, acidification, and extraction with benzene produced a nearly quantitative yield of 2,4-dimethoxyacetophenone containing less than 0.3% acetovanillone.

References:

Domtar Limited US4065504, 1977, A

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