Question

prepare propanoic acid using butene​

Answer 1

Explanation:

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Answer 2

Explanation:

Solution :

From an alkene : Propene adds on to borane (BH³) to give tripropyl borane.

³CH³−CH=CH²+BH³Propene→(CH³CH²CH3³)3BTripropyl borane−→−−−−−H²O²/OH−CH³CH²CH²OH+H³BO³Propyl alcohol

This reaction is hydroboration

CH³CH²CH²OHPropanol−→−−−−−−K²Cr²O⁷/H+(O)CH³CH²COOHPropanoic acid

Alternate method :

CH³CH=CH²+HBr−→−−−peroxideCH³CH²CH³Brn propyl bromide(Anti-markovnikos rule)

This kharasch peroxide effect

CH³CH²CH²Br+NaOH−→H²OCH³CH²CH²OHPropanol

CH³CH²CH²OHPropanol−→−−−−−−(O)K²Cr²O⁷/H+CH³CH²COOHPropanoic acid