1.

Compound (A) reacts with ethylmagnesium bromideto give a product which on hydrolysis yields 3-methyl-3-pentianol. What is the structural formula of (A) ?

Answer»

`CH_(3)CH_(2)CH_(2)CHO`
`CH_(3)-OVERSET("O")overset("||")C-CH_(2)-CH_(3)`
`CH_(3)- underset("O")underset("||")C-CH_(3)`
`CH_(3)CH_(2)CH_(2)COOH`

Solution :`underset(-(A)"")overset("O")overset("||")(CH_(3)-C-CH_(2)-CH_(3)+C_(2)H_(5)MgBr)RARR underset(OMgBr"")underset("|")overset(C_(2)H_(5)"")overset("|")(CH_(3)-C-CH_(2)-CH_(3))overset(H_(2)O)rarrunderset(OH"")underset("|")overset(C_(2)H_(5)"")overset("|")(CH_(3)-C-CH_(2)-CH_(3))`


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