Allyl and vinyl are two different organic functional groups.
What is allylic and vinylic.
An allylic carbon is a carbon atom bonded to a carbon atom that in turn is doubly bonded to another carbon atom.
See also allylic hydrogen.
Both have c c double bonds but in different positions.
At the same time both these functional groups also share some similarities like both of them hold double bond between carbon atoms whereas the other atoms are bonded through single bond.
The key difference between allylic and vinylic carbon is that allylic carbon is the carbon atom adjacent to the double bonded carbon atom whereas vinylic carbon atom is one of the two atoms that share the double bond.
In vinyl group c c is directly attached to the rest of the chain.
In contrast to vinyl allyl group is attached to the rest of the molecule through ch2 group.
The positions adjacent to alkene c c often show enhanced reactivity compared to simple alkanes due to the proximity of the adjacent π system.