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JEE PYQ: Aldehydes And Ketones Question 43

Question 43 - 2019 (11 Jan Shift 2)

Chromene lactone + Br$_2$ (1 eq.)/MeOH:

(1). (Br on $\alpha$-carbon with OMe)

(2). (Br on ring with MeOH addition)

(3). (Br on methyl group)

(4). (Br on ring, methyl intact)

Show Answer

Answer: (2) (Note: Answer key shows 1)

Solution

1 eq Br$_2$ in MeOH adds across the enol ether double bond giving bromo-methoxy product.


Learning Progress: Step 43 of 49 in this series