When glycerol reacts with excess HI,which of | vedclass

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(B) Glycerol $(CH_2OH-CHOH-CH_2OH)$ reacts with excess $HI$ to undergo substitution and reduction reactions. First,the hydroxyl groups are replaced by

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$CH_2I - CHI - CH_2I$

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(B) Glycerol $(CH_2OH-CHOH-CH_2OH)$ reacts with excess $HI$ to undergo substitution and reduction reactions. First,the hydroxyl groups are replaced by iodine to form $1,2,3-triiodopropane$ $(CH_2I-CHI-CH_2I)$. This compound is unstable and loses $I_2$ to form allyl iodide $(CH_2=CH-CH_2I)$. Allyl iodide can further react with $HI$ to form $1-iodopropane$ or $2-iodopropane$ $(CH_3-CHI-CH_3)$ via addition reactions. However,the compound $CH_2OH-CHI-CH_2OH$ is not formed because the reaction proceeds through the complete substitution of all $-OH$ groups.

When glycerol reacts with excess $HI$,which of the following is $NOT$ formed?

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