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This is doubt of organic chem. Plz help. Attached image contains the question. Do help .urgent

This is doubt of organic chem. Plz help. Attached image contains the question. Do help .urgent

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Grade:12

1 Answers

Jayant Kishore
144 Points
6 years ago
Lactones are cyclic esters which are formed due to intramolecular esterification. So, correct reaction must produce -COOH and -CH2OH at adjacent positions in the benzene ring .conc. NaOH is generally used for  Cannizaro Reaction .
Option B) after cannizaro reaction will give two products ie CHO group will be converted into COOH (after acidification) in one product and CH2OH . But their isolation will be diffucult . 
But , in option c) there will be intramolecular cannizaro reaction which will give us benzene ring with -COOH and CH2OH at adjacent position . Therefore , option C) will form the given lactone.
So, correct answer is C).
Approve the answer if correct!!

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