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ChemicalBook CAS DataBase List Sodium chloroacetate
3926-62-3

Sodium chloroacetate synthesis

2synthesis methods
Sodium monochloroacetate is commercially produced through a neutralisation reaction involving monochloroacetic acid and sodium hydroxide or sodium carbonate. This process typically takes place in a controlled reactor system where monochloroacetic acid is gradually added to an aqueous solution of the sodium base, maintaining precise temperature and pH conditions to ensure complete conversion and minimize side reactions. The resulting material is then purified, often via crystallization or filtration and dried.
-

Yield:-

Reaction Conditions:

with sodium carbonate in water at 45;

Steps:

A3.1
A3. i-Acetyl-θ-chloro-IH-indol-S-yl acetateStep 1 : 2-[(Carboxymethyl)amino]-4-chlorobenzoic acid. Chloroacetic acid (15 g) is dissolved in water (15 ml) and sodium carbonate (16 g) is added in portions (carbon dioxide evolves) and the mixture is stirred at 450C for 30 min. In parallel, 2-amino-4-chlorobenzoic acid is dissolved in water (15 ml), 1 M aqueous sodium hydroxide solution (15 ml) is added, followed by the sodium chloroacetate solution prepared above. The resulting mixture is stirred at 6O0C for 2 days. After cooling, 1 M aqueous sodium hydroxide solution is added, after that, it is acidified by addition of concentrated hydrochloric acid. The yellow precipitate, that is formed, is filtered off and washed with water (100 ml). It is redissolved in tetrahydrofuran / ethyl acetate (1 :1 (v/v), 150 ml), dried (Na2SO4) and concentrated in vacuo. The residue, 20.0 g of crude 2-[(carboxymethyl)amino]-4-chlorobenzoic acid as a yellow solid, is used without further purification in the next step.

References:

NYCOMED GMBH;BARTELS, Bj?rn;WEINBRENNER, Steffen;MARX, Degenhard;DIEFENBACH, J?rg;DUNKERN, Torsten;MENGE, Wiro M.P.B.;CHRISTIAANS, Johannes A. M. WO2010/15589, 2010, A1 Location in patent:Page/Page column 107

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