1. Claim 1: a compound characterized by formula (1),where X is O or S； Rˣ is selected from the group consisting of C₁₋₆-alkyl, C₁₋₆-alkoxy, C₂₋₆-alkenyl, C₂₋₆-alkynyl, C₁₋₆-alkoxy-C₁₋₄-alkyl, C₁₋₆-alkoxy- C₁₋₄-alkoxy, C₃₋₆-cycloalkyl, C₃₋₆-cycloalkyl-C₁₋₄-alkyl, C₃₋₆-cycloalkoxy-C₁₋₄-alkyl, which are unsubstituted or substituted by halogen, C (O) - ORᵃ,NRᵇRᶜ,C₁₋₆-alkylene-NRᵇRᶜ,O-c832188331-832626-rent-nr7495； r758080；C₁₋₆-alkylene-CN, NH-C₁₋₆-alkylene-NRᵇRᶜ,C (o) - No. 74955； r7580,C (O) -RSO NR RS (3DO) R1. Phenyl and benzene, in which the phenyl ring is not replaced or substituted by r75844；R¹ is H, C₁₋₆-alkyl, C₁₋₆-alkoxy, C₂₋₆-alkenyl, C₂₋₆-alkynyl, C₃₋₆-cycloalkyl, C₃₋₆-cycloalkoxy, C₁₋₆-alkylsulfenyl, C₁₋₆- alkylsulfinyl or C₁₋₆-alkylsulfonyl that are substituted or unsubstituted with halogen； R²,R3 is an independent choice,of the group consisting of H, halogen, N₃,CN, NO₂,-SCN, -SF₅,C₁₋₆-alkyl, C₁₋₆-alkoxy, C₂₋₆-alkenyl, tri-C₁₋₆-alkylsilyl, C₂₋₆-alkynyl, C₁₋₆-alkoxy-C₁₋₄-alkyl, C₁₋₆-alkoxy- C₁₋₄-alkoxy, C₃₋₆-cycloalkyl, C₃₋₆-cycloalkoxy, C₃₋₆-cycloalkyl-C₁₋₄-alkyl, C₃₋₆-cycloalkoxy-C₁₋₄-alkyl, which are unsubstituted or substituted by halogen , C (O) -ORᵃ,NRᵇRᶜ,C₁₋₆-alkylene-NRᵇRᶜ,O-c832188331-832626-rent-nr7495； r758080；C₁₋₆-alkylene-CN, NH-C₁₋₆-alkylene-NRᵇRᶜ,C (o) - No. 74955； r7580,C (O) -RR758080 and S (= O) 8344r74977；(a) An excimer may also be phenyl, phenyl, phenyl carbides, phenyl or benzene, where the phenyl ring is not replaced or substituted by the r75844 excimer；AR is phenyl or non phenyl； ra691 is an independent member；In the halogen group, No. 8323,Oh, CN, no.832222,-SCN, -SF₅,C₁₋₆-alkyl, C₁₋₆-alkoxy, C₂₋₆-alkenyl, tri-C₁₋₆-alkylsilyl, C₂₋₆-alkynyl, C₁₋₆-alkoxy-C₁₋₄-alkyl, C₁₋₆-alkoxy- C₁₋₄-alkoxy, C₃₋₆-cycloalkyl, C₃₋₆-cycloalkoxy, C₃₋₆-cycloalkyl-C₁₋₄-alkyl, C₃₋₆-cycloalkoxy-C₁₋₄-alkyl, which are unsubstituted or substituted by halogen , C (O) -ORᵃ,NRᵇRᶜ,C₁₋₆-rent-NRᵇRᶜ,O-c832188331-832626-rent-nr7495； r758080；C₁₋₆-alkylene-CN, NH-C₁₋₆-alky
