Question

$P\underset{2.H_3{O}^{+}}{\overset{1.C{H}_{3}MgBr}{\to }}R\underset{2.\Delta }{\overset{1.dil.NaOH}{\to }}$ 4-methylpent-3-en-2-one

$P$ is :

• A. ethanamine
• B. ethanal
• C. propanone
• D. ethanenitrile

Answer 1

The correct option is D ethanenitrile

$C{H}_{3}CN\stackrel{C{H}_{3}MgBr,H_3{O}^{+}}{\to }C{H}_{3}COC{H}_3\stackrel{AldolCondensation}{\to }4-methylpent-3-en-2-one$

P is ethynitrile as shown in the above reaction.