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Sodium 2‐Hydroxy‐3‐carboxynaphthalene‐6‐sulphonate and 2:6‐Dihydroxynaphthalene‐3‐carboxylic Acid
Author(s) -
CROSS E. J.
Publication year - 1946
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1946.tb02406.x
Subject(s) - decarboxylation , chemistry , carboxylic acid , ether , sodium , medicinal chemistry , organic chemistry , catalysis
Summary Sulphonation of 1‐amino‐2‐hydroxynaphthalene‐3‐carboxylic acid and climination of the 1‐amino‐group from the product 1 yields 2‐hydroxy‐3‐carboxynaphthalene‐6‐sulphonic acid. The orientation of the sulphonic group was determined by conversion into the corresponding dihydroxynaphthoic acid, the dimethyl ether of which afforded 2: 6‐dimethoxynaphthalene on decarboxylation.