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Haloalkanes And Haloarenes

Question
CBSEENCH12007858

Write the equations for the preparations of 1-iodobutane from 
but-1-ene.

Solution
bold CH subscript bold 3 bold minus bold CH subscript bold 2 bold minus bold CH bold space bold equals bold space bold CH subscript bold 2 bold plus bold NaI bold space bold rightwards arrow from bold Heat to bold Acetone of bold space bold CH subscript bold 3 bold minus stack bold CH subscript bold 2 bold minus bold CH subscript bold 2 bold minus bold CH subscript bold 2 bold I with bold left parenthesis bold minus bold 1 bold minus bold iodo bold space bold butane bold right parenthesis below