Journal of the American Chemical Society

Monosubstituted Diaminodiphenyl Sulfones

J Weijlard, E Swanezy

Index: Weijlard; Swanezy Journal of the American Chemical Society, 1949 , vol. 71, p. 4134

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Citation Number: 1

Abstract

0.5 g. of calcium carbonate were added to 100 ml. of 50% aqueous ethyl alcohol and the mixture heated under reflux on a steam-bath for eight hours. The reaction mixture was cooled, diluted with 50 ml. of water and filtered. The residue was dissolved in 10% sodium hydroxide (the solution was deep blood-red in color), treated with 0.5 g. of activated charcoal and the solution filtered. On acidification of the solution to congo red with concd. hydrochloric acid, a ...