Hydrocarbons Question 186

Question: Formation of 2-butene as major product by dehydration of 2-butanol is according to [MP PMT 1995]

Options:

A) Markownikoff rule

B) Saytzeff rule

C) Peroxide effect

D) Anti-Markownikoff rule

Show Answer

Answer:

Correct Answer: B

Solution:

$ \underset{2-Butanol}{\mathop{CH_3\underset{OH}{\mathop{-\underset{|}{\mathop{C}}H-}}CH_2-CH_3}}\to $

$ \underset{2-Butene}{\mathop{CH_3-CH=CH-CH_3}} $

$ +H_2O $ According to this rule H atom goes from that b - carbon which is less hydrogenated.