Question
During dehydration of alcohols to alkenes by heating with conc. \[{{H}_{2}}S{{O}_{4}}\] the initiation step is
A.
formation of carbocation
B.
elimination of water
C.
formation of an ester
D.
protonation of alcohol molecule
Answer :
protonation of alcohol molecule
Solution :
The dehydration of alcohol to form alkene occurs in following three step. Step (1) is initiation step.
Step (1) Formation of protonated alcohol.
Step (2) Formation of carbocation
Step (3) Elimination ofa proton to form ethene
The dehydration of alcohol to form alkene occurs in following three step. Step (1) is initiation step.
Step (1) Formation of protonated alcohol.
Step (2) Formation of carbocation
Step (3) Elimination ofa proton to form ethene