title: A new synthesis of allylic sulfones and their conversion to polyolefins. Beta-carotene from vitamin A.
mesh_terms: D002338:Carotenoids / Q000138:chemical synthesis*; D013450:Sulfones / Q000138:chemical synthesis*; D014801:Vitamin A
chemical_list: D013450:Sulfones; D014801:Vitamin A; D002338:Carotenoids