Skip to main content
Chemistry

Return to Question

Became Hot Network Question
Appended source from OP's comment
Source Link
andselisk ♦
andselisk ♦
  • 38.5k
  • 14
  • 133
  • 223

Amongst butan-2-ol and butane-2A question taken from a test series (Vibrant,3 diol which has higher rate of dehydration? India):

Amongst butan-2-ol and butane-2,3-diol, which has higher rate of dehydration?

The carbocation formed in butane-2,3-diol is more stable as it will rearrange to get +M stability from alcohol group. However, the product will be aldehyde (due to tautomerism) for butane-2,3-diol and alkene for butan-2-ol.

As rate is determined by stability of carbocation, butane-2,3-diol should have faster rate. Also, the products don't give any extra hint. Right? But the answer given for higher rate is butan-2-ol. Is there any point that I have missed out?

Amongst butan-2-ol and butane-2,3 diol which has higher rate of dehydration?

The carbocation formed in butane-2,3-diol is more stable as it will rearrange to get +M stability from alcohol group. However, the product will be aldehyde (due to tautomerism) for butane-2,3-diol and alkene for butan-2-ol.

As rate is determined by stability of carbocation, butane-2,3-diol should have faster rate. Also, the products don't give any extra hint. Right? But the answer given for higher rate is butan-2-ol. Is there any point that I have missed out?

A question taken from a test series (Vibrant, India):

Amongst butan-2-ol and butane-2,3-diol, which has higher rate of dehydration?

The carbocation formed in butane-2,3-diol is more stable as it will rearrange to get +M stability from alcohol group. However, the product will be aldehyde (due to tautomerism) for butane-2,3-diol and alkene for butan-2-ol.

As rate is determined by stability of carbocation, butane-2,3-diol should have faster rate. Also, the products don't give any extra hint. Right? But the answer given for higher rate is butan-2-ol. Is there any point that I have missed out?

Edited title; improved grammar; it's butane-2,3-diol
Source Link
edit approved Jul 21, 2020 at 13:08
Rahul Verma
edit approved Jul 21, 2020 at 13:08
Rahul Verma
  • 3.1k
  • 2
  • 23
  • 41

Rate of dehydration for butan-2-ol and butane-2,3-diol

Amongst Butanbutan-2-ol and Butanbutane-2,3 diol which has higher rate of dehydration?

The carbocation formed in Butanbutane-2,3 diol-diol is more stable as it will rearrange to get +M stability from alcoholalcohol group. However, the product will be aldehyde  (due to tautomerisation tautomerism) for Butanbutane-2,3 diol-diol and alkene for Butanbutan-2 ol-ol.

As rate is determined by stability of carbocation, Butanbutane-2,3 diol-diol should have faster rate. Also, the products don't give any extra hint. Right? But the answer given for higher rate is Butanbutan-2-ol. Is there any point that I have missed out?

Rate of dehydration

Amongst Butan-2-ol and Butan-2,3 diol which has higher rate of dehydration?

The carbocation formed in Butan-2,3 diol is more stable as it will rearrange to get +M stability from alcohol group. However, the product will be aldehyde(due to tautomerisation ) for Butan-2,3 diol and alkene for Butan-2 ol.

As rate is determined by stability of carbocation, Butan-2,3 diol should have faster rate. Also the products don't give any extra hint. Right? But the answer given for higher rate is Butan-2-ol. Is there any point that I have missed out?

Rate of dehydration for butan-2-ol and butane-2,3-diol

Amongst butan-2-ol and butane-2,3 diol which has higher rate of dehydration?

The carbocation formed in butane-2,3-diol is more stable as it will rearrange to get +M stability from alcohol group. However, the product will be aldehyde  (due to tautomerism) for butane-2,3-diol and alkene for butan-2-ol.

As rate is determined by stability of carbocation, butane-2,3-diol should have faster rate. Also, the products don't give any extra hint. Right? But the answer given for higher rate is butan-2-ol. Is there any point that I have missed out?

Source Link
Khushi Ladha
Khushi Ladha
  • 594
  • 4
  • 16

Rate of dehydration

Amongst Butan-2-ol and Butan-2,3 diol which has higher rate of dehydration?

The carbocation formed in Butan-2,3 diol is more stable as it will rearrange to get +M stability from alcohol group. However, the product will be aldehyde(due to tautomerisation ) for Butan-2,3 diol and alkene for Butan-2 ol.

As rate is determined by stability of carbocation, Butan-2,3 diol should have faster rate. Also the products don't give any extra hint. Right? But the answer given for higher rate is Butan-2-ol. Is there any point that I have missed out?