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why formaldehyde is more reactive than acetaldehyde? 51

why formaldehyde is more reactive than acetaldehyde?
51

Grade:12

2 Answers

Jayant Kishore
144 Points
8 years ago
There are two reasons for this. Firstly , the acetaldehyde has a comparitively bulky group attached to carbonyl group which hinders the attack of Nucleophile to some extent , but in the case of formaldehyde this is not so.
Secondly , CH3 group in acetaldehyde decreases the positive charge on cabonyl carbon by +I effect to some extect which is not so in the case of formaldehyde,  Since , Nu attack is favourable with more positive charge and less hinderance at carbonyl carbon , hence we conclude that formaldehyde is more reactive than acetaldehyde .
T?s??? S???????
26 Points
2 years ago
There are two reasons for this. Firstly , the acetaldehyde has a comparitively bulky group attached to carbonyl group which hinders the attack of Nucleophile to some extent , but in the case of formaldehyde this is not so.
Secondly , CH3 group in acetaldehyde decreases the positive charge on cabonyl carbon by +I effect to some extect which is not so in the case of formaldehyde, Since , Nu attack is favourable with more positive charge and less hinderance at carbonyl carbon , hence we conclude that formaldehyde is more reactive than acetaldehyde .

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