Organic reactions types

Organic reactions are categorized into 4 sections according to the reaction happens because different reactions happen in different mechanisms. That four types are listed below.

HBr addition of ethenes.jpg

Types of organic reactions

Organic reagents are categorized into 4 sections according to their mechanisms of reactions.
  1. Addition reactions
  2. Substitute reactions
  3. Elimination reaction
  4. Rearranging reactions

Addition reactions

Adding atoms or groups through unsaturated hydrocarbons (when double or triple bonds are exist between carbon atoms they are called unsaturated hydrocarbons) are defined as addition reactions. But any groups existed earlier before reaction in carbon atoms are not removed. Only new groups are added and unsaturated bond is removed.

Examples of Addition reactions

  1. Catalyst hydrogenization of alkenes
  2. Brominization of alkenes
  3. Halogen acids (H-X) addition
addition reaction examples

Substitute reactions

Substitute reactions is defined as adding one atom or group instead of another atom or group (substituting).

Examples of Addition reactions

  1. Catalyst hydrogenization of alkenes
  2. Brominization of alkenes
  3. Halogen acids (H-X) addition

Eliminating reactions

In this reaction kind, a small molecule or group is eliminated. As a result, compounds with unsaturated bonds are given.

Examples of eliminating reactions

  1. Dehydration of alcohols
  2. hydrohalogenation of alkyl halides

Rearranging reactions

Atoms or groups are not added or not removed. Only structure of bonds is changed and it gives new compounds.

Examples of rearranging reactions

  1. hoffmann's degradation



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