The structures of compounds J, K and L, respectively, are
A
PhCOCH3,PhCH2COCH3 and PhCH2COO−K+
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B
PhCHO,PhCH2CHO and PhCOO−K+
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C
PhCOCH3,PhCH2CHO and CH3COO−K+
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D
PhCHO,PhCOCH3 and PhCOO−K+
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Solution
The correct option is DPhCHO,PhCOCH3 and PhCOO−K+ from given information
Refer image I.
(1) reaction of (I) with KOH suggest that it is cannizzaro reaction therefore (L) must be PhCOOK and (J) is (PhCHO)
(ii) structure of (M) is given and it is α−β unsaturated ketone, If suggest that (M) is obtained by adole Rxn of (x) So proceed reverse to get structure of (K)
Refer image ,(II)
(iii) again proceed reverse to get structure of (1) and (4),