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ChemicalBook CAS DataBase List 4-(2,3-DiMethoxyphenyl)butanoic Acid
64400-76-6

4-(2,3-DiMethoxyphenyl)butanoic Acid synthesis

10synthesis methods
-

Yield:64400-76-6 96%

Reaction Conditions:

with sodium hydroxide in methanol;

Steps:

46.4 4.

4. 4-(2,3-Dimethoxyphenyl)butanoic Acid Ethyl 4-(2,3-dimethoxyphenyl)butenoate (106.4 g, 0.42 mol) and 1N sodium hydroxide (800 mL) are added to methanol (400 mL) followed by heating at reflux for 2 hours. The mixture is evaporated to an oil, which is washed with ethyl ether and acidified to pH 1 with conc. HCl. The mixture is then extracted with ethyl ether, washed with brine, dried over anhydrous magnesium sulfate, and filtered. The filtrate is evaporated to a crystalline solid (90.36 g, 96% yield). NMR spectrum is consistent with structure. MS: APCI: M+1, 225.2 (M: 224.3).

References:

US2004/44057,2004,A1