Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device

A compound represented by formula (A1-1) or (B1-1):

• wherein R1 to R6 each independently represent a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms, a halogen atom, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkoxy group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms;
• when R1 to R6 are each plurality in number, groups R1 to groups R6 are the same or different;
• R5 and R6 are optionally bonded to each other to form a ring structure;
• R7 and R8 each identically represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, or a cyano group, and R7 and R8 are optionally bonded to each other to form a saturated aliphatic ring;
• k3 and k4 each independently represent an integer of 0 to 5, m2 is 0, m6 is an integer of 0 to 4, n1 is 0 and n5 is an integer of 0 to 3;
• L1 to L2 each independently represent a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 50 ring atoms;
• Ar in formula (A1-1) represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 40 ring atoms, and
• Ar in formula (B1-1) is a group selected from the group consisting of groups (a) to (k) as listed in the following Table:
• wherein R, Ra, and Rb are each independently R1, when more than one R occurs, groups R are the same or different and groups R are not bonded to form a ring;
• Rc represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms;
• two groups selected from groups R, Ra, and Rb in formula (f) are optionally bonded to each other to form a ring structure;
• each k independently represents an integer of 0 to 5, each m independently represents an integer of 0 to 4, each n independently represents an integer of 0 to 3;
• and
• * represents a bonding site to L2 or the nitrogen atom.