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Give the structures of A,B and C in the following reactions: (i) CH_(3)CH_(2)I overset(NaCN)to A underset("Partial hydrolysis")overset(OH^(-))to B overset(NaOH+Br_(2))toC (ii) C_(6)H_(5)N_(2)Cl overset(CuCN) to A overset(H_(2)O //H^(+))to B underset(Delta)overset(NH_(3))toC (iii) CH_(3)CH_(2)Br overset(KCN)to A overset(LiAlH_(4))toB underset(0^(@)C)overset(HNO_(2))toC (iv) C_(6)H_(5)NO_(2) overset(Fe//HCl)to A underset(273K)overset(NaNO_(2)+HCl)to B overset(H_(2)O //H^(+))toC (v) CH_(3)COOK underset(Delta)overset(NH_(3))to A overset(NaOBr)to B overset(NaNO_(2)//HCl)toC (vi) C_(6)H_(5)NO_(2) overset(Fe//HCl)to A underset(273K)overset(HNO_(2))to B overset(C_(6)H_(5)OH)toC. |
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Answer» Solution :(i) `underset("Iodoethane")(CH_(3)CH_(2)I) underset(-NaI)overset(NaCN)to underset("Propanenitrile (A)")(CH_(3)CH_(2)CN) underset(("PARTIAL hydrolysis"))overset(OH^(-))to underset("Ethanamide (B)")(CH_(3)-overset(O)overset(||)(C)-NH_(2)) underset(("Hofmann bromamide reaction"))overset(NaOH+Br_(2))to underset("Methanamine (C)")(CH_(3)-NH_(2))` (ii) `underset("Benzenediazonium chloride")(C_(6)H_(5)N_(2)Cl) underset(("Sandmeyer reaction"))overset(CuCN)to underset("Benzonitrile")(C_(6)H_(5)CN) underset("Hydrolysis")overset(H_(2)O //H^(+))to underset("Benzoic acid (B)")(C_(6)H_(5)COOH) [C_(6)H_(5)COONH_(4)] underset(-H_(2)O)overset(Delta)to underset("Benzamide (C)")(C_(6)H_(5)CONH_(2))` (iii) `underset("Bromoethane")(CH_(3)CH_(2)Br) overset(KCN) to underset("Propanenitrile (A)")(CH_(3)CH_(2)CN) underset(("Reduction"))overset(LiAlH_(4)) to underset("Propan-1-amine (B)")(CH_(3)CH_(2)CH_(2)NH_(2)) underset(("Diazotisation"))overset(HNO_(2),0%)to [CH_(3)CH_(2)CH_(2)overset(+)(N)-=NCl^(-)] underset(-N_(2),-HCl )overset(H_(2)O)to underset("Propanol (C)")(CH_(3)CH_(2)CH_(2)OH)` (iv) `underset("Nitrobenzene")(C_(6)H_(5)NO_(2)) underset(("Reduction"))overset(Fe//HCl)to underset("Aniline (A)")(C_(6)H_(5)NH_(2)) underset(273K)overset(NaNO_(2)+HCl) to underset("Benzenediazonium chloride (B)")(C_(6)H_(5)overset(+)(N)-=HCl^(-)) underset(Delta)overset(H_(2)O //H^(+))to underset("Phenol (C)")(C_(6)H_(5)OH)` (V) `underset("Ethanoic acid")(CH_(3)COOH) underset(Delta)overset(NH_(3))to underset("Ethanamide (A)")(CH_(3)CONH_(2)) underset(("Hofmann bromamide reation"))overset(NaOBr)to underset("Methanamide (B)")(CH_(3)CH_(2)) overset(NaNO_(2)//HCl)to underset("Methanol (C)")(CH_(3)OH)`. 
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