SEARCH Articles Figures Tables A-Lactone A-Lactones A-methylenation A-methylene-8-lactone Halides formation Lactone formation Lactone methylenation Lactones a-methylene Lactones formation Lactones, methylenation Lactonization formation Methylene formation Methylene halide Methylene lactones Of a lactone Of lactones Of methylene Vinyl formate Vinyl halides Vinyl lactones Vinylic halides Vinylic halides formation