Q.4-Methoxybenzonitrile (p-CH3O-C6H4-CN) is treated with CH3MgBr, then hydrolysed with H3O+. Product 'P' in this reaction is

PHYSICAL: the lower alkyl cyanides (to about C14) are colourless liquids with a strong, sweet smell; higher members are crystalline solids; moderately water-soluble but freely soluble in organic solvents; all poisonous. Cyanides boil HIGHER than the structurally analogous acetylenes, since the C#N triple bond is far more polar (strong dipole) than the essentially nonpolar C#C bond. CHEMICAL: (1) HYDROLYSIS (alkali or dilute mineral acid, boiling) proceeds in two stages -- PARTIAL hydrolysis stops at the amide (ethanenitrile to acetamide), COMPLETE hydrolysis carries to the carboxylic acid (ethanenitrile to acetic acid). (2) REDUCTION (LiAlH4 or Ni/H2) gives a PRIMARY amine (ethanenitrile to ethanamine) -- the same route already met under amine preparation. (3) CONDENSATION: the THORPE NITRILE CONDENSATION self-condenses two molecules of an alpha-H-bearing nitrile (sodium, ether) to a …