What is attacking reagent Class 11?

In general, in a chemical reaction, there is a substrate molecule that is attacked by an attacking reagent to form a highly reactive reaction intermediate which reacts further to give final products. Thus, “The species which attacks the substrate molecules during organic reactions are called attacking reagents”.

What is substrate and attacking reagent?

In an organic reaction, the organic compound called the substrate reacts with a suitable attacking species called the reagent to form products. Substrate is that reactant which supplies carbon for the formation of a new bond while the other reactant is called the reagent.

What is an attacking electrophile?

Bromination: nucleophile (alkene) attacks electrophile (bromine) to give a new electrophile (the bromonium ion) and a new nucleophile (bromide ion) which react further to give your vicinal dibromide. …

What are nucleophilic reagents?

A nucleophile (or nucleophilic reagent) is a reagent that forms a bond to its reaction partner (the electrophile) by donating both bonding electrons. Nucleophilic reagents are Lewis bases.

What are electrophiles give two examples?

Examples of electrophiles are hydronium ion (H3O+, from Brønsted acids), boron trifluoride (BF3), aluminum chloride (AlCl3), and the halogen molecules fluorine (F2), chlorine (Cl2), bromine (Br2), and iodine (I2).

How many types of attacking reagent are there?

two types
There are two types of attacking reagents, which are: Electrophile, and. Nucleophile.

How are attacking reagents classified?

The species that attacks a substrate molecule or intermediate and forms a product is called attacking reagent. It is of two types: Electrophilic reagent or electrophiles. Nucleophilic reagent or nucleophiles.

Are all Lewis acids electrophiles?

All electrophiles are Lewis acids, but not all Lewis acids are electrophiles. The major difference between a nucleophile and a Lewis base is that: Nucleophilic behavior involves making a new bond, and is kinetic behavior.

What are good nucleophiles?

A good base is usually a good nucleophile. So, strong bases — substances with negatively charged O, N, and C atoms — are strong nucleophiles. Examples are: RO⁻, OH⁻, RLi, RC≡C:⁻, and NH₂⁻. Some strong bases are poor nucleophiles because of steric hindrance.