SEARCH Articles Figures Tables 2-Oxazolone ring 5 -Oxazolones ring opening 5)2//)-Oxazolones reactions 5-Oxazolone ring opening Reactions unsaturated Ring opening reactions Unsaturated 5 -oxazolones Unsaturated 5 -oxazolones, ring opening Unsaturated 5 -oxazolones, ring opening Michael reaction