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What favours the hydride shift in Cannizaros Reaction?

We know the hydride is a very poor leaving gropu so why does it leave then?

ravi teja teja , 12 Years ago
Grade 12
anser 3 Answers
chandan jha

Last Activity: 12 Years ago

since we know that hydride shift is  RDS in  Cannizaro reaction and 

the carbon cannot exceed its covanlency to 5 also the double bond btw C and O is stronger then hydride it will leave for a nuchleophilic centre it will leave

ravi teja teja

Last Activity: 11 Years ago

but instead of hydride going out , OH- can leave since it is a much better leaving group than H-

priyanshu gautam

Last Activity: 11 Years ago

the group that leaves is basically that group group which doesnt has any role in giving stability

 

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