Compound derived from cyclopentadienone, preparation method thereof and EL element using the same

摘要

Disclosed are compounds represented by formula (1), wherein m, X, R1, R2, R3, R1′, R2′, R3′, and Ar are described herein. The inventive cyclopentadienone compounds can be used as core materials for an organic electroluminescence element or other optical devices. The invention also describes methods for preparing compounds of formula (1).