JEE Advance - Chemistry (2020 - Paper 1 Offline - No. 9)
In the reaction scheme shown below Q, R and S are the major products.
The correct structure of
The correct structure of
S is
Q is
R is
S is
Explanation
Compound (P) undergoes Friedel-Craft acylation reaction in presence of succinic anhydride and AlCl3 to gives an acid (Q).
Compound (Q) on treatment with Zn-Hg/HCl undergoes Clemmensen reduction, where ketone group change into alkane and on further reaction with dehydrating agent H3PO4 gives compound (R).
Compound (R) on reaction with Grignard reagent and heated in presence of acid gives dehydrating product (S).
Thus, the option (b) and (d) are correct.
Compound (Q) on treatment with Zn-Hg/HCl undergoes Clemmensen reduction, where ketone group change into alkane and on further reaction with dehydrating agent H3PO4 gives compound (R).
Compound (R) on reaction with Grignard reagent and heated in presence of acid gives dehydrating product (S).
Thus, the option (b) and (d) are correct.
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