The major product `H` of the given reaction sequence is
`CH_(3) - CH_(2) CO - CH_(3) overset (Theta_(CN)) to G - overset (95% H_(2) SO_(4)) underset (Heat) to H`

Options

A. `CH_(3)-CH=underset(CH_(3))underset("| ")"C"-COOH`
B. `CH_(3)-underset(CH_(3))underset("| ")"C"-CN`
C. `CH_(3)-CH_(2)-overset(OH)overset("| ")underset(CH_(3))underset("| ")"C "-COOH`
D. `CH_(3)-CH=underset(CH_(3))underset("|")C-CONH_(2)`

Answer

B

Explanation

`{:(underset("Butan-2-one")(CH_(3)CH_(2)COCH_(3))overset(bar(C)N)rarr,underset(" Butanone cyanohydrin"(G))(CH_(3)CH_(2)-overset(OH)overset(|)underset(" "CH_(3))underset(|)(C)-CN)):} `
`{:overset(95%H_(2)SO_(4))underset("Dehydration")rarr " "underset(2-"Methyl but-2-en 1-nitrite"(H))(CH_(3)CH=underset(" "CH_(3))underset(|)(C)-CN):}`