Reduction of Ag (I) by 1-acyl-2-arylhydrazines: Mechanism of photographic infectious development

WR Bowman, JA Forshaw, KP Hall, JP Kitchin, AW Mott

Index: Bowman, W. Russell; Forshaw, J. Anthony; Hall, Kevin P.; Kitchin, Jonathan P.; Mott, Andrew W. Tetrahedron, 1996 , vol. 52, # 11 p. 3961 - 3972

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Citation Number: 16

Abstract

The photographic process of 'infectious development'in which 1-acyl-2-arylhydrazines reduce Ag (I) has been studied using analogues. 1-Acyl-2-aryldiazenes, resulting from oxidation of 1-acyl-2-arylhydrazines, are hydrolysed to anions of aryldiazenes (ArN= NH), which undergo further oxidation with loss of nitrogen to yield aryl radicals. The aryl radicals cause 'feedback inhibition'which is prevented by the addition of benzhydrol.