What is the major product formed when toluene undergoes Friedel Crafts alkylation with vinyl chloride?
What is the major product formed when toluene undergoes Friedel Crafts alkylation with vinyl chloride?
It’s aromatic nucleophilic substitution reaction. Presence of methyl group in ring favours Friedel craft reaction in toulene. Toluene on Friedel craft reaction with vinyl chloride gives 4-methyl-styrene.
What is the chief product of the Friedel Crafts alkylation of benzene with 1 butene and HF?
2-phenylbutane
What is Friedel Craft alkylation with example?
An alkyl group can be added to a benzene molecule by an electrophile aromatic substitution reaction called the Friedel‐Crafts alkylation reaction. One example is the addition of a methyl group to a benzene ring. The electrophile attacks the π electron system of the benzene ring to form a nonaromatic carbocation.
How do you add no2 to benzene?
The nitration of benzene Nitration happens when one (or more) of the hydrogen atoms on the benzene ring is replaced by a nitro group, NO2. Benzene is treated with a mixture of concentrated nitric acid and concentrated sulfuric acid at a temperature not exceeding 50°C.
What is the chlorination of benzene?
Benzene reacts with chlorine or bromine in the presence of a catalyst, replacing one of the hydrogen atoms on the ring by a chlorine or bromine atom. The reactions happen at room temperature. The catalyst is either aluminium chloride (or aluminium bromide if you are reacting benzene with bromine) or iron.
What is the active Electrophile in chlorination of a benzene ring?
As a chlorine molecule approaches the benzene ring, the delocalised electrons in the ring repel electrons in the chlorine-chlorine bond. It is the slightly positive end of the chlorine molecule which acts as the electrophile. The presence of the aluminium chloride helps this polarisation.
Which of the following is the electrophile in the chlorination of benzene?
chlorinium ion
Why is phenol more reactive than benzene?
Phenol is more reactive than benzene towards electrophilic substitution reaction. The donation of the oxygen’s lone pair into the ring system increases the electron density around the ring. That makes the ring much more reactive than it is in benzene. The intermediate carbocation is more resonance stabilized.