Compound and organic electroluminescence device

A compound represented by the following formula (1):

• wherein in the formula (1),
• A is
• a substituted or unsubstituted aromatic hydrocarbon ring group containing a nitrogen atom as a part of a substituent and having a fused ring composed of 5 or more rings, or
• a substituted or unsubstituted heterocyclic group containing a nitrogen atom as a part of the skeleton or a substituent and having a fused ring composed of 5 or more rings;
• B is a monovalent group represented by the following formula (b1):
• wherein in the formula (b1),
• *B is bonded with the nitrogen atom contained as a part of the skeleton of A or a substituent via a single bond;
• one or more sets of the adjacent two or more of R1B to R4B form an unsubstituted saturated ring, or a substituted or unsubstituted, unsaturated ring by bonding with each other;
• R1B to R4B which do not form the unsubstituted saturated ring, or the substituted or unsubstituted, unsaturated ring are independently a hydrogen atom or a substituent R;
• the substituent R is selected from the group consisting of
• 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,
• —S1(R901)(R902)(R903),
• —O—(R904),
• —S—(R905),
• —N(R906)(R907)
• (wherein R901 to R907 are independently
• a hydrogen atom,
• 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, or
• a substituted or unsubstituted monovalent heterocyclic group having 5 to 50 ring atoms;
• when two or more of each of R901 to R907 are present, the two or more of each of R901 to R907 may be the same as or different from each other),
• a halogen atom, a cyano group, a nitro group,
• a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, and
• a substituted or unsubstituted monovalent heterocyclic group having 5 to 50 ring atoms;
• when two or more substituents R are present, the two or more substituents R may be the same as or different from each other;
• X is selected from the group consisting of
• 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,
• —S1(R901)(R902)(R903),
• —O—(R904),
• —S—(R905),
• —N(R906)(R907),
• a halogen atom, a cyano group, a nitro group, and
• a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms;
• R901 to R907 are the same as defined in the substituent R;
• and
• n is an integer of 1 to 5;
• when n is 2 or more, two or more B's may be the same as or different from each other.