1.

Which of the following compounds is not formed in iodoform reaction of acetone?

Answer»

`CH_(3)COCH_(2)I`
`ICH_(2)COCH_(2)I`
`CH_(3)COCHI_(2)`
`CH_(3)COCI_(3)`

Solution :Iodoform reaction of acetone occurs in following steps.
(i) `CH_(3)-OVERSET(O)overset(||)C-CH_(3)+NaOI to CH_(3)-overset(O)overset(||)C-CH_(2)I+NaOH`
(ii) `CH_(3)-overset(O)overset(||)C-CH_(2)I+NaOI to CH_(3)-overset(O)overset(||)C-CHI_(2)+NaOH`
(iii) `CH_(3)-overset(O)overset(||)C-CHI_(2)+NaOI to CH_(3)-overset(O)overset(||)C-CI_(3)+NaOH`
(iv) `CH_(3)-overset(O)overset(||)C-CI_(3)+NaOH to CH_(3)COONa+CHI_(3)`
So COMPOUND which is not formed in iodoform reaction of acetone is `ICH_(2)COCH_(2)I`.


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