The group
CH2=CHCH2
(allyl) and derivatives formed by substitution. The term '
allylic position' or '
allylic site' refers to the saturated carbon atom. A group, such as
–OH, attached at an allylic site is sometimes described as '
allylic'.
Source:
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1315