Answer to Question #278165 in Organic Chemistry for Yenn

Question

What is the major product obtained from the acid-catalyzed hydration of each of the following alkenes?

a. CHỊCH CHỊCH=CH,

b.

d.

c. CH₂CH₂CH₂CH=CHCH₂

CH₂

Answer 1

This is the Markovnikov addition of water to an alkene.

The H

+

 from the acid adds to C-1

 of the alkene and forms a 2° carbocation at C-2

.

The O

 atom of the water then attacks C-2

 to form pentan-2-ol.