- DICYANOPYRAZINE COMPOUND, LUMINESCENT MATERIAL, LUMINESCENCE DEVICE USING THE SAME, AND METHOD FOR PRODUCING 2,5-DICYANO-3,6-DIHALOGENOPYRAZINE
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A compound represented by formula (I) or formula (1I): in formula (I), R3 represents an electron donating group, R4 represents a hydrogen atom, a substituted or unsubstituted aryl group or an electron donating group, L3 represents a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L4 represents a single bond, a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L3 and L4 may bond together to form a ring with the carbon atoms to which they are bonded, in formula (II), R5 represents an electron donating group, R6 represents a hydrogen atom, a substituted or unsubstituted aryl group or an electron donating group, L5 represents a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L6 represents a single bond, a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group.
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Paragraph 0276; 0277
(2018/10/19)
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- 3,6-diamino-2,5-pyrazinedicarbonitrile
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This invention relates to 3,6-diamino-2,5-pyrazinedicarbonitrile which is a red crystal and yellowish green fluorescent substance and the methods of preparation from compounds represented by formula [I], STR1 (wherein R are aryl, alkyl, aralkyl or alkenyl
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