P-Fluoro-ylids adds aldehydes and ketones to produce 2-fluoro oxaphosphetanes that convert, depending upon the nature of substituents in C-3 and C-4 a7toms into allylphosphonates or vinylphosphonates.
P-
氟代化合物加成醛和酮以生成2-
氟代氧杂
膦酸酯,根据C-3和C-4原子中取代基的性质,它们可以转化为
烯丙基膦酸酯或
乙烯基膦酸酯。