Question

For osazone formation, the effective structural unit necessary is
(a) CH₂OCH₃
|
CO
|
(b) CH₂OH
|
CO
|
(c) CH₂OH
|
CHOCH₃
|
(d) CHO
|
CHOCH₃
|

Answer 1

Answer:

CHO2 CHOCH2 is the answer to the this Q

Answer 2

For osazone formation, the effective structural unit necessary is   keto hydroxy group.

Correct answer -"a"

Step by step explanation:

• Sugars are react with phenylhydrazine  to form osazone.
• The main condition is sugar must be having ketohydroxy group.
• The structure of Keto hydroxy group is $CH_{3}CH_{2}-CO-CH_{2}-OH$.
• Some sugars like D-glucose, D-fructose and D-mannose are forms the same osazone when treated with excess phenylhydrazine
• Since they vary mainly in the arrangement of atoms of first and second carbon and these are converted in the same form.

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