A novel benzoxazole derivative having high excitation energy, particularly high triplet excitation energy is provided. A light-emitting element having high current efficiency is provided by application of the novel benzoxazole derivative for the light-emitting element. A light-emitting device, an electronic device, and a lighting device each having reduced power consumption are provided. The benzoxazole derivative is represented by General Formula (G1). In the formula, R
11
to R
14
and R
21
to R
27
separately represent any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and Z represents either a sulfur atom or an oxygen atom.
提供了一种具有高激发能量,特别是高三重激发能量的新型苯并
噁唑衍
生物。通过将新型苯并
噁唑衍
生物应用于发光元件,提供了具有高电流效率的发光元件。提供了功耗降低的发光装置、电子装置和照明装置。苯并
噁唑衍
生物由通式(G1)表示。在该式中,R11至R14和R21至R27分别表示氢、具有1至4个碳原子的烷基或具有6至13个碳原子的取代或未取代芳基,Ar表示具有6至13个碳原子的取代或未取代芳基烷基,Z表示
硫原子或氧原子。