Bis-phosphorous acid triphenyl (3,3',5,5'-tetra-tert-butyl-2,2'-xenol) ester microwave synthesis method

The invention discloses a bis-phosphorous acid triphenyl (3,3',5,5'-tetra-tert-butyl-2,2'-xenol) ester microwave synthesis method. According to the method, phosphorous acid trialkyl ester and 3,3',5,5'-tetra-tert-butyl-2,2'-xenol are used as raw materials, wherein the molar ratio of the phosphorous acid trialkyl ester and the 3,3',5,5'-tetra-tert-butyl-2,2'-xenol is 1:1-10:1; aryl substitute phosphoric chloride or alkyl substitute phosphoric chloride servers as a catalyst; bis-phosphorous acid triphenyl (3,3',5,5'-tetra-tert-butyl-2,2'-xenol) ester is formed by synthesis under microwave radiation without solvent; microwave radiation power is 100-1000w, and microwave reaction time is 5-30min. The method has the advantages of being high in bis-phosphite acid ester yield, small in number of by-products, short in reaction time, capable of achieving solvent-free operation, environmentally friendly, free of pollution, simple in aftertreatment and the like.