Ladder compound, and organic electroluminescent element using same

A compound represented by the following formula (1):

• wherein in the formula (1),
• X is O, S or a group represented by N—Ra;
• Y1 to Y12 are independently N or a group represented by C—Ra;
• Ar1 and Ar2 are independently a substituted or unsubstituted aryl group including 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group including 5 to 30 ring atoms;
• Ra is a hydrogen atom, a deuterium atom, a substituted or unsubstituted aryl group including 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group including 5 to 30 ring atoms, a substituted or unsubstituted alkyl group including 1 to 30 carbon atoms, a substituted or unsubstituted fluoroalkyl group including 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group including 3 to 30 ring carbon atoms, a substituted or unsubstituted aralkyl group including 7 to 30 carbon atoms, a substituted phosphoryl group, a substituted silyl group, a substituted germanium group, a cyano group, a nitro group or a carboxy group;
• if two or more Ras are present in the formula (1), the plural Ras may be the same or different;
• and
• provided that, when Ar1 and Ar2 are the same substituents, then Y1 and Y12 are not the same as each other, Y2 and Y11 are not the same as each other, Y3 and Y10 are not the same as each other, Y4 and Y9 are not the same as each other, Y5 and Y8 are not the same as each other, and Y6 and Y7 are not the same as each other.