Why HCHO reacts with HCN faster than CH3CHO?
Answers
Answered by
15
Oxygen is far more electronegative than carbon and so has a strong tendency to pull electrons in a carbon-oxygen bond towards itself. One of the two pairs of electrons that make up a carbon-oxygen double bond is even more easily pulled towards the oxygen. That makes the carbon-oxygen double bond very highly polar.
So, In CH3CHO +I group is present which has a tendency to withdraw electrons, so that the negative charge on carbonyl oxygen becomes increases and positive charge on carbonyl carbon decreases and reaction becomes more difficult and makes it less reactive towards nucleophillic addition reaction while in HCHO,+I group is not there to withdraw electrons. so it will react with HCN very easily.
So, In CH3CHO +I group is present which has a tendency to withdraw electrons, so that the negative charge on carbonyl oxygen becomes increases and positive charge on carbonyl carbon decreases and reaction becomes more difficult and makes it less reactive towards nucleophillic addition reaction while in HCHO,+I group is not there to withdraw electrons. so it will react with HCN very easily.
Answered by
8
The oxygen is far more electronegative than carbon and so has a strong tendency to pull electrons in carbon. Oxygen bond towards it.
Similar questions