Organic electroluminescent element and electronic device

A compound of formula (2-1), (2-2), (2-3), (2-4) (2-5), (2-6) and 2-8)):

• wherein:
• each of R1 and R2 is independently a hydrogen atom, a fluorine atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkylthio group having 1 to 20 carbon atoms, a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 30 ring carbon atoms, or a group represented by —Si(R101)(R102)(R103) or a group represented by —Z—Ra;
• R1's and R2's, if present, may be the same or different, and R1's and R2's may be bonded to each other to form a ring structure, respectively;
• Z is a single bond, a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heteroarylene group having 5 to 30 ring atoms, or a divalent linking group wherein two to four groups selected from the arylene group and the heteroarylene group are linked together;
• Z′ s, if present, may be the same or different;
• Ra is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms
• each of n1 and n2 is an integer of 0 to 4;
• Ra's, if present, may be the same or different;
• each of R11 to R16, R21 to R26, R31 to R38, and R41 to R48 is independently a hydrogen atom, a fluorine atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted fluoroalkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkylthio group having 1 to 20 carbon atoms, a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms, a group represented by —Si(R101)(R102)(R103), or a group represented by —Z—Ra;
• each of R101 to R103 is independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring 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;
• provided that at least one of R11 to R16 and R21 to R26 of each of formulae (2-1), (2-2), (2-3), (2-4), (2-5), and (2-6) is a group represented by —Z—Ra;
• at least one of R11 to R16 and R31 to R38 of formula (2-8) is a group represented by —Z—Ra;
• adjacent two selected from R11 to R16, R21 to R26, R31 to R38, and R41 to R48 may be bonded to each other to form a ring structure.