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   cannot be prepared by :

  • Option 1)

    CH_{3}CH_{2}COCH_{3}+PhMgX

  • Option 2)

    HCHO+PhCH(CH_{3})CH_{2}MgX

  • Option 3)

    PhCOCH_{3}+CH_{3}CH_{2}MgX

  • Option 4)

    PhCOCH_{2}CH_{3}+CH_{3}MgX

Answers (1)

best_answer

 

Reaction of Grignard reagent with aldehyde -

With methanol yields primary alcohol, with all other aldehydes produces secondary alcohols

- wherein

as we have learned in organic chemistry that when ketone reacts with RMgx gives 30 alcohal

fig

 


Option 1)

CH_{3}CH_{2}COCH_{3}+PhMgX

Option 2)

HCHO+PhCH(CH_{3})CH_{2}MgX

Option 3)

PhCOCH_{3}+CH_{3}CH_{2}MgX

Option 4)

PhCOCH_{2}CH_{3}+CH_{3}MgX

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