Patent ID: 8222426

Claim:
An aromatic compound of the following formula (15-1) selected from the group consisting of: wherein, X 3 represents a halogen atom, a boric ester group, or —B(OH) 2 ; A 1 represents O, S, C(R 1 )(R 2 ), N(R 5 ), B(R 6 ), or P(═O)(R 8 ), wherein R 1 , R 2 , R 5 , R 6 and R 8 each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkyloxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkyloxy group, an arylalkylthio group, an acyl group, an acyloxy group, an amide group, an acid imide group, an imine residue, an amino group, a substituted amino group, a substituted silyl group, a substituted silyloxy group, a substituted silylthio group, a substituted silylamino group, a mono-valent heterocyclic group, a heteroaryloxy group, a heteroarylthio group, an arylalkenyl group, an arylethynyl group, a carboxyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, an arylalkyloxycarbonyl group, a heteroaryloxycarbonyl group or a cyano group, wherein, R 1 and R 2 may be mutually connected to form a ring; A 5 represents a silicon atom, or an a-valent aromatic hydrocarbon group selected from the group consisting of wherein the aromatic hydrocarbon groups may have a substituent; a represents 3 or 4, a plurality of A 1 s and X 3 s may be mutually the same or different, and the compound represented by formula (15-1) may have a substituent on the benzene ring in the compound, and substituents may be mutually connected to form a ring.