Syntheses and Ultraviolet Spectra of Aromatic Azo Compounds. II. Azobenzenecarboxylic Acids, Methylazobenzenecarboxylic Acids and their Ethyl Esters

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概要

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• 1) The zinc chloride double salts of ethoxy-carbonylbenzenediazonium chlorides reacted with aryl Grignard reagents to give ethyl azobenzenecarboxylates. This provides a new method for the preparation of these compounds, as has been demonstrated by the preparation of twelve azo compounds, including ten substances not hitherto known.<BR>2) A group of azobenzenecarboxylic acids was prepared by the hydrolysis of the corresponding ethyl esters obtained above ; seven of them are new compounds.<BR>3) The ultraviolet absorption spectra of these esters and free acids were measured.

• 公益社団法人 日本化学会の論文

著者

• Anzai Hiroyuki

  Department of Chemistry College of General Education The University of Tokyo

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