Allergenic. alpha.-methylene-. gamma.-lactones. General method for the preparation of. beta.-acetoxy-and. beta.-hydroxy-. alpha.-methylene-. gamma.-butyrolactones …

~25%

~%

~%

~72%

~94%

~%

~%

~58%

~94%

~%

~%

~%

~58%

~85%

~%

~%

~%

~%

~%

~82%

~%

~%

~%

~%

~%

~%

~%