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

1:

• A compound represented by formula (1):
• wherein,
• N* is a central nitrogen atom,
• one of R1 and R2 is a single bond bonded to *a, and the other is a hydrogen atom,
• one of R3 and R4 is a single bond bonded to *b, and the other is a hydrogen atom,
• L1 is a single bond or a phenylene group,
• Ar is represented by any one of the following formulas (1-a) to (1-d):
• in the formula (1-a),
• ** represents a bonding position to the central nitrogen atom N*,
• m1 is 0 or 1, n1 is 0, 1 or 2,
• m1+n1 is 1, 2, or 3,
• R11 to R15 each are independently
• a hydrogen atom, a halogen atom, a nitro group, a cyano group,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted haloalkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkylthio group having 1 to 50 carbon atoms,
• a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted arylthio group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, or
• a mono-, di- or tri-substituted silyl group having a substituent selected from a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, and a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms,
• R21 to R26 and R31 to R35 each are independently
• a hydrogen atom, a halogen atom, a nitro group, a cyano group,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted haloalkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkylthio group having 1 to 50 carbon atoms,
• a substituted or unsubstituted aryl group having 6 to 14 ring carbon atoms,
• a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted arylthio group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, or
• a mono-, di- or tri-substituted silyl group having a substituent selected from a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, and a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms,
• provided that
• when m1 is 1 and n1 is 0, one selected from R11 to R15 is a single bond that is bonded to *c, and one selected from R21 to R26 is a single bond that is bonded to *d,
• when m1 is 0 and n1 is 1, one selected from R11 to R15 is a single bond that is bonded to *e,
• when m1 is 1 and n1 is 1, one selected from R11 to R15 is a single bond that is bonded to *c, one selected from R21 to R26 is a single bond that is bonded to *d, and another one selected from R21 to R26 is a single bond that is bonded to *e,
• when m1 is 0 and n1 is 2, two selected from R11 to R are single bonds that are bonded to *e,
• when m1 is 1 and n1 is 2, one selected from R11 to R15 is a single bond that is bonded to *c, one selected from R21 to R26 is a single bond that is bonded to *d, and other two selected from R21 to R26 are single bonds that are bonded to *e,
• R11 to R15 that are not the single bonds, R21 to R26 that are not the single bonds, and R31 to R35 that are not the single bonds are not bonded to each other and therefore do not form a ring structure,
• when R2 is a single bond that is bonded to *a, and m1 and n1 are 1, to any one of R21 to R26 that are single bonds bonded to *d, the other one of R21 to R26 located adjacent on a benzene ring is a single bond bonded to *e;
• in the formula (1-b),
• ** represents a bonding position to the central nitrogen atom N*,
• L2 is a single bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted naphthylene group;
• when R2 is a single bond that is bonded to *a, in the substituted or unsubstituted biphenylene group represented by L2, (i) with respect to a bonding position to the central nitrogen atom N* on one benzene ring, the other benzene ring is bonded at an ortho position or a meta position, or (ii) with respect to a bonding position to the central nitrogen atom N* on one benzene ring, the other benzene ring is bonded at a para position, and with respect to the bonding position to the one benzene ring on the other benzene ring, one of R41 to R48 that are single bonds is bonded at the ortho position or the meta position,
• one selected from R41 to R48 is a single bond that is bonded to *f, and R41 to R48 that are not the single bonds each are independently
• a hydrogen atom, a halogen atom, a nitro group, a cyano group,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted haloalkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkylthio group having 1 to 50 carbon atoms,
• a substituted or unsubstituted aryl group having 6 to 14 ring carbon atoms,
• a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted arylthio group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, or
• a mono-, di- or tri-substituted silyl group having a substituent selected from a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, and a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms,
• provided that R41 to R48 that are not the single bonds, and each substituent when L2 has a substituent are respectively not bonded to each other and therefore do not form a ring structure;
• in the formula (1-c),
• ** represents a bonding position to the central nitrogen atom N*,
• L3 is a single bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted naphthylene group,
• one selected from R51 to R60 is a single bond that is bonded to *g, and R51 to R60 that are not the single bonds each are independently
• a hydrogen atom, a halogen atom, a nitro group, a cyano group,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted haloalkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkylthio group having 1 to 50 carbon atoms,
• a substituted or unsubstituted aryl group having 6 to 14 ring carbon atoms,
• a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted arylthio group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, or
• a mono-, di- or tri-substituted silyl group having a substituent selected from a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, and a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms,
• provided that R51 to R60 that are not the single bonds, and each substituent when L3 has a substituent are respectively not bonded to each other and therefore do not form a ring structure;
• and
• in the formula (1-d),
• ** represents a bonding position to the central nitrogen atom N*,
• L4 is a single bond, a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted naphthylene group,
• X is an oxygen atom, a sulfur atom, or CRaRb,
• Ra and Rb each are independently a substituted or unsubstituted alkyl group having 1 to 50 ring carbon atoms or a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms,
• one selected from R61 to R68 is a single bond that is bonded to *h, and R61 to R68 that are not the single bond each are independently
• a hydrogen atom, a halogen atom, a nitro group, a cyano group,
• a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms,
• a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms,
• a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted haloalkoxy group having 1 to 50 carbon atoms,
• a substituted or unsubstituted alkylthio group having 1 to 50 carbon atoms,
• a substituted or unsubstituted aryloxy group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted arylthio group having 6 to 50 ring carbon atoms,
• a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, or
• a mono-, di- or tri-substituted silyl group having a substituent selected from a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, and a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms,
• provided that R61 to R68 that are not the single bonds, and each substituent when L4 has a substituent are respectively not bonded to each other and therefore do not form a ring structure.