| CPC H10K 85/636 (2023.02) [C07D 311/96 (2013.01); C07D 335/04 (2013.01); C07D 405/04 (2013.01); C07D 407/12 (2013.01); C07D 409/12 (2013.01); C09K 11/06 (2013.01); H10K 85/633 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); C09K 2211/1018 (2013.01); H10K 50/15 (2023.02); H10K 50/156 (2023.02); H10K 85/615 (2023.02); H10K 85/626 (2023.02); H10K 85/6576 (2023.02)] | 6 Claims |
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1. A compound of a formula (I-1-3)
![]() which may be substituted on the benzene rings at the positions shown as unsubstituted by R2 radicals, and where:
both of the two Ar1 are selected, differently, from the formulae Ar1-59 to Ar1-62,
![]() each of which is substituted by R1 radicals;
X is O or S;
R1 is the same or different at each instance and is selected from H, N (R3)2;
R2 H;
R3 is the same or different at each instance and is selected from H, F, CN, straight-chain alkyl groups having 1 to 20 carbon atoms, and branched or cyclic alkyl groups having 3 to 20 carbon atoms, where the alkyl groups mentioned may each be substituted by one or more R4 radicals;
R4 is the same or different at each instance and is selected from H, D, F, and CN;
k is 0.
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