Carbazole derivative, light-emitting element material, light-emitting element, light-emitting device, electronic device, and lighting device

A carbazole derivative represented by a general formula (4),

• wherein Ar1 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring;
• R1 represents an alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring;
• and R11 to R17 and R21 to R28 independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring.

A carbazole derivative represented by a general formula (5),

• wherein Ar1 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring;
• R11 to R17 and R21 to R28 independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms which form a ring;
• and R51 to R55 independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 10 carbon atoms which form a ring.

A carbazole derivative represented by a general formula (6),

• wherein R61 to R65 independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 10 carbon atoms which form a ring.