Patent ID: 9543526
Date: 2017-01-10
CPC Classifications: C07D,H01L

Claim:
1. A nitrogen-containing aromatic compound, which is represented by the general formula (2): in the formula (2): ring A represents an aromatic ring represented by the formula (1a) and fused with two adjacent rings at arbitrary positions; ring B represents a heterocycle represented by the formula (1b) and fused with two adjacent rings at arbitrary positions; Y's each represent C—R or N, provided that one to four of Y's each represent N; X's each represent N—Z; R represents hydrogen, an alkyl group having 1 to 30 carbon atoms, a cycloalkyl group having 3 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkynyl group having 2 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 50 carbon atoms, or an aromatic heterocyclic group having 3 to 50 carbon atoms and free of a fused heterocycle having four or more rings; and Z represents a monovalent group produced by removing hydrogen from dibenzofuran or dibenzothiophene, wherein the dibenzofuran and dibenzothiophene may have a substituent, and the substituent is an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an acyl group having 2 to 20 carbon atoms, a dialkylamino group having 2 to 20 carbon atoms, a diarylamino group having 6 to 28 carbon atoms, a phosphanyl group having 6 to 18 carbon atoms, or a silyl group having 3 to 18 carbon atoms.