Spiro-compound 2,4,8,10-tetracarbonyl-3,9-dioxaspiro[5,5] hendecane and synthetic method thereof

The invention relates to a spiro-compound 2,4,8,10-tetracarbonyl-3,9-dioxaspiro[5,5] hendecane. The molecular formula of the 2,4,8,10-tetracarbonyl-3,9-dioxaspiro[5,5] hendecane is C9H8O6, and the structural formula is shown in the specification. The 2,4,8,10-tetracarbonyl-3,9-dioxaspiro[5,5] hendecane disclosed by the invention is a highly symmetric oxygenous polybasic spiro-compound; according to the invention, the 2,4,8,10-tetracarbonyl-3,9-dioxaspiro[5,5] hendecane generates a linear polymer by realizing the ring-opening polymerization initiated through an initiating agent under a certain condition by being used as a curing agent in epoxide resin and generates volume expansion reaction, so that the epoxide resin is subjected to volume expansion caused by no volume shrinkage in a curing process.