5,5,5',5'-tetramethyl-3,3'-methanediyl-bis-imidazolidine-2,4-dione 、 alkaline earth salt of/the/ methylsulfuric acid 在
quaternary ammonium salt
sodium hydroxide 作用下,
生成 5,5,5',5'-tetramethyl-1,1'-bis-oxiranylmethyl-3,3'-methanediyl-bis-imidazolidine-2,4-dione