For osazone formation,the effective structura | vedclass

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Question

(B) Osazone formation involves the reaction of phenylhydrazine with the first two carbon atoms of a reducing sugar. The necessary structural unit is a

Vedclass · Accepted Answer

$CH_2OH-CHOH-$

Vedclass · Answer

(B) Osazone formation involves the reaction of phenylhydrazine with the first two carbon atoms of a reducing sugar. The necessary structural unit is an $\alpha$-hydroxy carbonyl group,which is represented by the structure $-CHOH-CO-$ or $-CHOH-CHOH-$. Among the given options,the structural unit $-CHOH-CHOH-$ (or similar $\alpha$-hydroxy carbonyl precursors) is essential for the reaction to proceed. Option $(b)$ represents the $\alpha$-hydroxy carbonyl moiety found in sugars.

For osazone formation,the effective structural unit necessary is:

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