Barnett, E. de Barry (Edward de Barry), 1886-1961 · New York : D. Van Nostrand · leaf 180
THE THIAZINES 157 diamine. The sulphuretted hydrogen is probably simul- taneously oxidized to the unknown sulphoxylic acid, HO— S— OH, which then condenses with the diamine with loss of water : … In support of this it may be pointed out that Smiles and his students have shown that mercaptans condense with aromatic compounds in the presence of strong sulphuric acid to form sulphides.6 Thus, thioxanthones are obtained in excel- lent yield when thiosalicylic acid is heated with an aromatic…
Dyes and dyeing · Coal-tar colors
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