SEARCH Articles Figures Tables Cyclobutanone Cyclobutanone ring 7-lactones Cyclobutanone-ring expansion Cyclobutanones Cyclobutanones ring expansion Cyclobutanones via ring expansion Cyclobutanones, 2-vinyldivinyl ketones from via ring expansion of cyclopropylcarbinols Sulfoxide, methyl 2-chlorophenyl ring expansion with cyclobutanones