A [ Zn, H _2 O ] O _3 ( CH _3)_2 CO + HCHO + OHC–CHO . A is

JEE Main Chemistry question

. is

(A)(CH)CHCH=CHCH=CH
(B)(CH)C=CH–CH=CH–CH=CHCorrect
(C)CHCHCCH, CHCH=CHCH
(D)CH=CH–CH=CH, CHCH=CH–CH

Answer: (B)

Solution

Three separate ozonolysis fragments — acetone, formaldehyde and glyoxal — require a conjugated triene with three C=C bonds flanked appropriately: (CH)C= at one end (→ acetone), a

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Question ID VK-142459