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CH 3 – CH 2 – C – CH 3 | | OH Ph can not be prepared by -

1. CH 3 CH 2 COCH 3 + PhMgX
2. PhCOCH 3 + CH 3 CH 2 MgX
3. PhCOCH 2 CH 3 + CH 3 MgX
4. HCHO + PhCH(CH 3 )CH 2 MgX

Correct answer: HCHO + PhCH(CH 3 )CH 2 MgX

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