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

A compound represented by a formula (40)

• wherein:
• k is an integer of 0 to 3, m is an integer of 1 to 4, n is an integer of 2 to 5, q is an integer of 0 to 3, and k+m+n+q=6;
• RX, D1, D2, and CN are respectively bonded to carbon atoms forming a benzene ring;
• CN is a cyano group;
• RX is a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms excluding a pyrenyl group, a substituted or unsubstituted heterocyclic group having 6 to 30 ring atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, or a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms, and a plurality of RX being optionally mutually the same or different;
• and
• D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x), D1 and D2 being optionally the same or different, a plurality of D1 being optionally the same or different, a plurality of D2 being optionally the same or different,
• wherein:
• R1 to R8 are each independently a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms, a substituted or unsubstituted arylamino group having 6 to 60 ring carbon atoms, a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, or a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms;
• and
• at least one of combinations of substituents selected from R1 to R8 is mutually bonded to form a cyclic group, which is a heterocyclic group having 5 to 30 ring atoms and not comprising nitrogen;
• wherein:
• R11 to R18 of the formula (3) and R111 to R118 of the formula (3x) are each independently a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms, a substituted or unsubstituted arylamino group having 6 to 60 ring carbon atoms, a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, or a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms;
• in the formula (3), at least one of combinations of substituents selected from R11 to R18 is optionally mutually bonded to form a cyclic structure;
• in the formula (3x), at least one of combinations of substituents selected from R111 to R118 is optionally mutually bonded to form a cyclic structure;
• in the formulae (3) and (3x):
• A, B and C each independently represent a cyclic structure represented by one of a formula (31) and a formula (32), with at least one A in the
• formula (3) being represented by the formula (32) and at least one of B and C in the formula (3x) being represented by the formula (32):
• wherein:
• R19 and R20 each independently represent the same as R1 to R8 described above and are optionally mutually bonded to form a cyclic structure;
• and
• X1 represents CR30R31, a sulfur atom, or an oxygen atom and R30 and R31 each independently represent the same as R1 to R8 described above, and at least one of combinations of substituents selected from R19, R20, R30 and R31 are optionally mutually bonded to form a cyclic structure,
• p, px and py are each independently an integer of 1 to 4:
• when p is an integer of 2 or more, a plurality of cyclic structures A are optionally the same or different;
• when px is an integer of 2 or more, a plurality of cyclic structures B are optionally the same or different;
• when py is an integer of 2 or more, a plurality of cyclic structures C are optionally the same or different;
• and
• each of the cyclic structure A, cyclic structure B, and cyclic structure C being fused with its adjacent cyclic structures at any positions,
• wherein neither D1 nor D2 is represented by formula (36):
• wherein:
• R11 to R18 each independently represent the same as R11 to R18 of the formula (3);
• R19 to R20 each independently represent the same as R19 to R20 of the formula (31);
• and
• X1 represents a sulfur atom or an oxygen atom,
• wherein the compound of the formula (40) is not a compound of a formula (43) or a formula (44):
• wherein:
• CN, D1, and D2 are the same as defined in the formula (40);
• R40 represents the same as RX in the formula (40);
• R40, D1, and D2 are respectively bonded to carbon atoms forming a benzene ring;
• in formula (43), k is an integer of 0 to 3, m is an integer of 1 to 4, q is an integer of 0 to 3, k+m+q=4;
• and
• in formula (44), k is an integer of 0 to 2, m is an integer of 1 to 3, q is an integer of 0 to 2, k+m+q=3.