JEE Main Chemistry question

The reaction of glucose with red P + HI is called:

(A)Sandmeyer's reaction
(B)Reformatsky reaction
(C)Gattermann's reaction
(D)ReductionCorrect

Answer: (D)

Solution

Treating glucose with red phosphorus and concentrated HI under heating removes all the oxygen-bearing functional groups (both the carbonyl and all the hydroxyls) stepwise, converting the sugar into a simple straight-chain alkane (n-hexane);

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Question ID VK-150865