Which of the following is NOT formed when gly | vedclass

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(B) When glycerol reacts with excess $HI$,it undergoes substitution and elimination reactions to form allyl iodide,which then reacts further to form i

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$CH_2OH-CHI-CH_2OH$

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(B) When glycerol reacts with excess $HI$,it undergoes substitution and elimination reactions to form allyl iodide,which then reacts further to form isopropyl iodide. The intermediate $CH_2OH-CHI-CH_2OH$ is not a product of this reaction sequence.The reaction sequence is:$CH_2OH-CHOH-CH_2OH + 3HI \rightarrow CH_2I-CHI-CH_2I + 3H_2O$$CH_2I-CHI-CH_2I \rightarrow CH_2=CH-CH_2I + I_2$ (Allyl iodide)$CH_2=CH-CH_2I + HI \rightarrow CH_3-CH(I)-CH_3$ (Isopropyl iodide)Thus,$CH_2OH-CHI-CH_2OH$ is not formed.

Which of the following is $NOT$ formed when glycerol reacts with $HI$?

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