CHEMICAL PROPERTIES OF ALCOHOLS

Chemical Properties of alcohols

Reactions of alcohols involving cleavage of O-H bond

•    Reaction with metals:

Reactions of alcohols involving cleavage of O-H bond

•    Reaction with carboxylic acid (Esterification):

Reactions of alcohols involving cleavage of O-H bond

•    Reaction with Grignard reagent:

Reactions of alcohols involving cleavage of O-H bond

Reactions involving cleavage of C – O bond

For the reaction involving cleavage of C – O bond, the reactivity order is

Reactions involving cleavage of C – O bond

•    Formation of halides:

Reactions involving cleavage of C – O bond

Oxidation of alcohols

Depending upon the structure of the alcohol and the type of oxidising agent used, oxidation of alcohol gives different products.

Oxidation of alcohols

Dehydrogenation of alcohols

Dehydration of alcohols takes place in acidic medium. Intra-molecular dehydration leads to the formation of alkene while inter molecular dehydration forms ether.

Order of ease of dehydration is: 3° > 2° > 1°

Dehydrogenation of alcohols

Dehydration of alcohols

Dehydration of alcohols with conc. H2SO4 at different temperatures yields different products.

Dehydration of alcohols

The ease of dehydration of three alcohols increases in the order

10 ROH < 20 ROH < 30 ROH

 

ASSIGNMENT : CHEMICAL PROPERTIES OF ALCOHOLS ASSIGNMENT MARKS : 10  DURATION : 1 week, 3 days

 

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