الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
The base-promoted change of nitro-aromatics into azo- and azoxy-structures nad been known since some decades ago this neading can be classified the behaviour of 4-nitrobenzyl- tnio-compounds of the general formula Z = -CH [where 2 = -CH2COOH
02 -CH2-SZ N 2COOH-CH2CH2COOH : -CH(CH3) COOH
-C(CH3)2COOH] which react with sodium hydroxide to give 4,4′-
diformylazoxybenzene as an initial reaction product which changes to 4,4-diformylazobenzene if sodium sulphide is pres- ent in the reaction medium Substitution of one a-hydrogen atom in the above mention-
ed system by a phenyl group does not alter the main COUISE the product is 4,4-dibenzoylazoxybenzene.
Reaction The question which can be raised is what would happen if one α-hydrogen is replaced by another -SZ group, i.e., the system becomes 4-nitrobenzylidenedithio compounds ? Another interesting point is to study the behaviour of compounds in which both α-hydrogen atoms are substituted; one by a phenyl and the other by a -SZ group The present work was therefore devoted to tackle problem and thus various 2- or 4-nitro or 2,4-dinitro-benzy- lideneditnio-compounds were studied where Z.