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Question

Ph−O||C−CH3Zn(Hg)−−−−→HCl

Product of reaction will be:

A
  • PhCH2CH3
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B
PhCH2CH2CH3
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C
PhCH2=CHCH3
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D
none of these
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Solution

The correct option is A
  • PhCH2CH3

The reduction of carbonyl groups of aldehydes and ketones to methylene groups with amalgamated zinc and concentrated HCl is known as Clemmensen reduction.
Thus Acetophenone on reduction with ZnHg/HCl gives ethylbenzene as shown in IMAGE 01.
And the mechanism is shown in IMAGE 02

1060581_137557_ans_cae05430bb8b4164b33e7d01714a9ba3.png

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