nucleophilic substitution of haloarenes

In this type of substitution, atom or group of atoms in the molecule is replaced by a nucleophile. These can be either S N 1 (substitution, nucleophilic, unimolecular) or S N 2 (substitution, nucleophilic, bimolecular) type. In the S N 1 ..

The nucleophilic substitution reactions can be classified into two types: First is the S N 1 reaction (substitution nucleophilic, first order). This type of reaction proceeds in two steps as: The first step is slow and is the rate-determining step. As ..

The chemical reactions of haloalkanes can be divided into four types: Nucleophilic substitution reactions Dehydrohalogenation Reactions with metals Reductio..

The reactivity of haloarenes is markedly affected by the presence of certain groups at certain positions of the ring. The presence of electron withdrawing groups such as -NO 2 , -CN, -COOH, etc. at 'o' and 'p' positions to the halogen atom, greatly activates the halogen towards nu..

The halogen atom is ortho and para directing and therefore, substitution takes place at ortho and para positions giving electrophilic substitution reactions at the benzene ring. In the resonance structures of chlorobenzene the ortho and para positions get negatively charged, i...

The halogen atom in haloalkane is very reactive and can be easily replaced by nucleophiles whereas the halogen atom in haloarenes is strongly held to the nucleus and cannot be replaced easily with nucleophiles. The differences between haloalkanes and haloarenes..

The halogen atom in haloalkane is very reactive and can be easily replaced by nucleophiles whereas the halogen atom in haloarenes is strongly held to the nucleus and cannot be replaced easily with nucleophiles..

The presence of nitro group facilitates nucleophilic substitution of otherwise unreactive aromatic halides by stabilizing the intermediate carbanio..

Influence on the Reactions of other Functional Groups - The presence of nitro group facilitates nucleophilic substitution of otherwise unreactive aromatic halides by stabilizing the intermediate carbanio..

On treatment with sodium azide, alkyl halides undergo nucleophilic substitution to form alkyl azides which on catalytic hydrogenation give primary amine..