Patent ID: 8920941

Claim:
A pyrazine derivative represented by a general formula (g-1), wherein R 1 and R 2 separately represents any one of an unsubstituted phenyl group, an o-tolyl group, a m-tolyl group, a p-tolyl group, a naphthyl group, a 2-naphthyl group, an unsubstituted 9,9-dimethylfluorene-2-yl group, and a spiro-9,9′-bifluorene-2-yl group; wherein R 3 represents any one of a hydrogen atom, an alkyl group, and an unsubstituted aryl group; wherein A represents a substituent represented by any one of a general formula (a-1), a general formula (a-2), a general formula (a-3), and a general formula (a-4); wherein R 4 represents an alkyl group or an aryl group; wherein R 5 , R 6 , and R 7 separately represents any one of a hydrogen atom, an alkyl group, and an aryl group; wherein Ar 1 , Ar 2 , Ar 3 , Ar 4 , Ar 5 , Ar 6 , and Ar 7 separately represents an aryl group; wherein α represents an arylene group, and wherein the unsubstituted aryl group of R 3 is any one of a phenyl group, an o-tolyl group, a m-tolyl group, a p-tolyl group, a napthly group, a 2-naphthyl group, a 4-biphenyl group, a 3-biphenyl group, a 2-biphenyl group, a 9,9-dimethylfluorene-2-yl group, a spiro-9,9′-bifluorene-2-yl group.