1,3-丙磺酸内酯是一种环状磺酸酯,主要用于将丙磺酸官能团引入有机结构中。1,3-Propanesultone has been used in preparation of poly[2-ethynyl-N-(propylsulfonate)pyridinium betaine],novel poly(4-vinylpyridine) supported acidic ionic liquid catalyst,novel poly(4-vinylpyridine) supported acidic ionic liquid catalyst.