Ueber Einwirkung von Schwefelkohlenstoff auf Hydrazoverbindungen

Abstract

I) P. J a c o b s o n , diese Berichte 31, 890-891 [lSSS]. P. J a c o b s o n , diese Berichte 26, 701 [1893]; Ann. d. Chem. BY7, 3, P. J a c o b s o n , Fr. D u s t e r b e b n , J. Klein, Ann. d. Chem. 285, 105 ff. [1895]. 163 ff. [1895]. 246*

The Chemistry of the Benzimidazoles.

“…of the hydrazo compound to an o-aminodiarylamine under the conditions of the reaction and the reaction of the resulting diamine with carbon disulfide in the normal manner. This reaction, however, is not a general reaction (384).…”

“…Acetylation of l-phenyl-6-ethoxy-2(3H)-benzimidazolethione by heating with acetic anhydride in the presence of molten sodium acetate gives the corresponding 2-thioacetyl derivative (386). The corresponding 1-p-tolyl analog reacts analogously (388).…”

“…Acetylation of l-phenyl-6-ethoxy-2(3H)-benzimidazolethione by heating with acetic anhydride in the presence of molten sodium acetate gives the corresponding 2-thioacetyl derivative (386). The corresponding 1-p-tolyl analog reacts analogously (388). 2(3ff)-Benzimidazolethione is reported (270) to give only a monobenzoyl derivative (LXXXVIII), The mercapto group may be oxidized to the sulfonic acid group with alkaline potassium permanganate solution in good yields:…”