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ChemicalBook CAS DataBase List Naproxen sodium
26159-34-2

Naproxen sodium synthesis

2synthesis methods
-

Yield:-

Reaction Conditions:

in methanol;

Steps:

26 EXAMPLE 26

EXAMPLE 26 This example illustrates the conversion of free carboxylic acid of Example 1-25 to various salts. To a solution of 300 mg of (S)-2-(6-methoxy-2-naphthyl)-propionic acid in 5 ml of methanol is added a 1 molar equivalent of sodium hydroxide, in the form of a 0.1N solution. The solvent is evaporated in vacuo and the residue is taken up in 2 ml of methanol, followed by precipitation with ether, to yield crude sodium (S)-2-(6-methoxy-2-naphthyl)propionate. Likewise, other salts, e.g., ammonium and potassium (S)-2-(6-methoxy-2-naphthyl)propionate, are prepared by substituting ammonium hydroxide and potassium hydroxide for sodium hydroxide.

References:

US4723033,1988,A

Naproxen sodium Related Search:

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