You may have learnt lot of organic reaction in organic chemistry. For some reactions, a mechanism is given to explain the reaction process like why this reaction happens and how the reaction occurs until give final products.
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.
Mechanism of addition of HBr molecule to ethene molecule. It is a two step reaction.
After you studied this lesson completely, see your organic reactions and mechanisms lessons to understand furthermore about organic reactions types.
Organic reagents are categorized into 4 sections according to their mechanisms of reactions.
Adding atoms or groups through double or triple bonds are defined as addition reactions. But any groups existed earlier before the reaction in the molecule are not removed. Only new groups are added.
Addition reactions mechanisms also can be categorized to different kinds.
Example reactions of electrophilic adddition reactions are given below
A negatively charged species attacks the positively charged carbon atom in first step and forms a new bond between that carbon atom and negatively charged species.
Some example reactions are given below for nucleophilic addition reaction.
Substitution reactions is defined as replacing one atom or group instead of another atom or group (substituting). Substitution reactions also can be categorized as below.
In this reaction kind, a small molecule or group is eliminated. As a result, compounds with unsaturated bonds are given.
Atoms or groups are not added or not removed. Only structure of bonds is changed and it gives new compounds.
Qualitative Analysis for anions and cationsEmission of gases Identify ammonium salts identify d block cations by ammonia solution Identify halides Identify carbonate ions identify chromium compounds Testing for thiosulfate (S2O32-) Testing for phosphate ion