Table of Contents
- 1 Why aryl halides are more reactive than alkyl halides?
- 2 Why alkyl halides are more reactive than vinyl halides towards nucleophilic substitution reaction?
- 3 Why is aryl halide less polar than alkyl halide?
- 4 Why aryl and vinyl halides are less reactive than alkyl halides?
- 5 Which aryl halide is most reactive?
- 6 Which is more reactive alkyl halide or aryl halide?
Why aryl halides are more reactive than alkyl halides?
Aryl halides are more stable and less reactive due to resonance over the aryl structure part where the lone pair of electrons are in conjugation with a pi bond whereas in alkyl halides the carbon halogen bond is a sigma bond . Thus aryl halides are more stable compared to alkyl halides.
Why alkyl halides are more reactive than vinyl halides towards nucleophilic substitution reaction?
In Alkyl halides the sp3 C-atom is directly attached to the halogen (C – X), halogens are electronegative than the carbon atoms due to which the C – X bond is polarised. Thus, alkyl halides are reactive and can undergo nucleophilic substitution reactions.
Why alkyl halides are very reactive towards Nucleophile?
Anions of halogens are good nucleophiles. The alkyl halides are very reactive due to highly polarized \[CX\] bonds with a large difference in electronegativities of carbon and halogen atoms.
Why are aryl halides less polar than alkyl halides?
The polar bond creates a molecular dipole that raises the melting points and boiling points compared to similar hydrocarbons. Aryl halides tend to be less polar than alkyl halides (since an sp2 C is more electronegative than an sp3 C)
Why is aryl halide less polar than alkyl halide?
Why aryl and vinyl halides are less reactive than alkyl halides?
Hint: Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl halides is because of resonance stabilization in aryl halide. Due to resonance, C−Cl bond becomes shorter and stronger and cannot be easily replaced by nucleophiles.
Why alkyl halides are more reactive while vinyl halides are less reactive than alkyl halides?
Vinyl halides are less reactive than alkyl halides . This is because C-X bond in vinyl halides have partial double bond character due to resonance . So, it is difficult to break the C-X bond .
How the reactivity of aryl halides can be increased towards nucleophilic substitution?
The reactivity of aryl halides can be increased by the presence of an electron withdrawing group (-(NO2) at ortho and para positions. So, presence of EWG will fascilitate nucleophilic at ortho and para positions not on meta position.
Which aryl halide is most reactive?
aryl fluorides
In nucleophilic aromatic substitution reactions, aryl fluorides are most reactive.