What are the differences between allyl and vinyl functional groups in terms of their chemical properties and reactivity?

Allyl and vinyl functional groups are both unsaturated hydrocarbon groups, but they differ in their structure and reactivity. Allyl groups have a CH2-CHCH2 structure, while vinyl groups have a CH2CH- structure. Allyl groups are more reactive due to the presence of a double bond, allowing for addition reactions. Vinyl groups are less reactive and tend to undergo substitution reactions. Overall, allyl groups are more versatile in terms of reactivity compared to vinyl groups.