Fluorene derivative, light-emitting elements, light-emitting device, electronic device, and lighting device
An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below. In the formula, R 1 to R 8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α 1 to α 4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar 1 and Ar 2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar 3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.
1. A synthesis method of a fluorene derivative comprising:
coupling a first compound and a second compound,
wherein the first compound is a Formula (a3):
wherein:
R 1 to R 8 are independently any one of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group;
α 3 is a substituted or unsubstituted arylene group having 6 to 12 carbon atoms;
α 4 is a substituted or unsubstituted 1,3-phenylene group;
Ar 4 is any one of an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 12 carbon atoms; and
X 2 is halogen; and
J is 1, and k is 0 or 1,
wherein the second compound is a formula (a6),
wherein:
Ar 1 and Ar 2 are independently any of an aryl group having 6 to 13 carbon atoms in a ring,
α 1 and α 2 are independently a substituted or unsubstituted arylene group having 6 to 12 carbon atoms; and
m and n are independently 0 or 1.
2. The synthesis method according to claim 1 , wherein R 1 to R 8 are independently any one of Formulae (R-1) to (R-9):
3. The synthesis method according to claim 1 , wherein α 1 to α 4 are independently any one of Formulae (α-1) to (α-3):
4. The synthesis method according to claim 1 , wherein Ar 4 is any of Formulae (Ar3-1) to (Ar3-8):
5. The synthesis method according to claim 1 , wherein X 2 is any of bromine and iodine.
6. The synthesis method according to claim 1 , wherein the first compound is Formula:
7. The synthesis method according to claim 1 , wherein Ar 4 is a substituted aryl group having 6 to 12 carbon atoms, and the substituted aryl group comprises one or more of the following substituents: a methyl group, an ethyl group, a propyl group, a pentyl group, a hexyl group, a phenyl group and a biphenyl group.