Procedure for obtaining halogenic organic acids and their compounds (Machine-translation by Google Translate, not legally binding)

摘要

Process for obtaining halogenated organic acids and their compounds, especially for synthesizing an α -halomethyl-3-indolyl acetic acid, acylated at the N-1 position with an aromatic carboxylic acyl radical of less than three welded rings, which comprises: a) Condense a 3- α -haloacetylindole, thus acylated in the N-1 position, with an α -haloester, to obtain a glycidic ester. b) Convert the glycidic ester into its corresponding acid and decarboxylate the acid to the aldehyde. c) Treat the aldehyde with hydroxylamine to form the respective oxime. d) Dehydrate the oxime to form the corresponding nitrile. e) Treat the nitrile with alkanol and hydrogen halide, to form an iminoalkyl ester hydrohalide. f) Hydrolyze the iminoalkyl hydrohalide to obtain the corresponding alkyl ester, and g) Hydrolyze the alkyl ester under moderate conditions. (Machine-translation by Google Translate, not legally binding)