n—Propylamine can be prepared by catalytic reduction ofa) n- propyl cyanide b) propionaldoximec) acetoxime d) nitroethane
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Answer : option (b) propionaldoxime
Explanation :- actually, when Propionaldehyde is treated with hydroxyl amine in weakly acidic medium to form imine product known as propionaldoxime.reaction is given by
CH₃CH₂CHO + NH₂OH ----> CH₃CH₂CH=N-OH + H₂O
Now propionaldoxime is reduced by proper reducing agent like Na in ethanol to form n-propyl amine. reaction follow as below
CH₃CH₂CH=NO-Na-C₂H5OH ----> CH₃CH₂CH₂NH₂
Explanation :- actually, when Propionaldehyde is treated with hydroxyl amine in weakly acidic medium to form imine product known as propionaldoxime.reaction is given by
CH₃CH₂CHO + NH₂OH ----> CH₃CH₂CH=N-OH + H₂O
Now propionaldoxime is reduced by proper reducing agent like Na in ethanol to form n-propyl amine. reaction follow as below
CH₃CH₂CH=NO-Na-C₂H5OH ----> CH₃CH₂CH₂NH₂
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Explanation:
Formation of free radicals : The first step involves clevage of benzoyl peroxide to form two carboxy radicals . These carboxy radicals immediately undergo decarboxylation to give phenyl intiator free radicals. (2) Chain initiating step : The phenyl radical thus formed adds to ethylene to form a new larger free radical.
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