BORONIC ACID OR BORONIC ESTER, OR METHOD OF PRODUCING POLYCYCLIC AROMATIC COMPOUND OR POLYCYCLIC AROMATIC POLYMER COMPOUND USING THEM

摘要

PROBLEM TO BE SOLVED: To provide a boronic acid compound effective in producing a polycyclic aromatic compound, and a method of producing a polycyclic aromatic compound using the boronic acid compound.SOLUTION: A polycyclic aromatic compound is produced by causing an acid to act on a compound represented by the general formula (1) in the figure. In the formula, the A ring, B ring and C ring are each independently an aryl ring or heteroaryl ring; Yis optionally esterified -B(OH); and Xand Xare -O-, N-Ar (Ar is aryl or the like), -S-, or -Se-.