Chemistry - ALCOHOL & ETHER Question with Solution | TestHub
Alcohol
(Major product) Possible number of alcohol (including stereoisomers) in above reaction
Answer:
Solution:
The reaction is an acid-catalyzed dehydration of an alcohol to form an alkene. The major product is Trans-But-2-ene.
The alcohols that can yield But-2-ene upon dehydration are:
1. Butan-1-ol: Undergoes rearrangement (1,2-hydride shift) to form a more stable secondary carbocation, which then eliminates to give But-2-ene.
2. Butan-2-ol: Directly dehydrates to form But-2-ene.
Butan-2-ol is a chiral molecule and exists as two enantiomers: (R)-Butan-2-ol and (S)-Butan-2-ol. Both enantiomers will dehydrate to form But-2-ene.
Therefore, the possible alcohols (including stereoisomers) are:
1. Butan-1-ol
2. (R)-Butan-2-ol
3. (S)-Butan-2-ol
Total number of alcohols = 3.
