| CPC C07D 495/04 (2013.01) [C07D 401/04 (2013.01); C07D 401/14 (2013.01); C07D 405/14 (2013.01); C07D 407/14 (2013.01); C07D 409/14 (2013.01); C07D 487/04 (2013.01); C07D 487/14 (2013.01); C07D 491/048 (2013.01); C07D 491/147 (2013.01); C07D 519/00 (2013.01); H10K 85/622 (2023.02); H10K 85/626 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); C07B 2200/13 (2013.01); H10K 50/13 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/844 (2023.02); H10K 59/873 (2023.02)] | 17 Claims |

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1. A compound represented by Formula 1:
![]() wherein:
1) R1 to R3 are each independently selected from the group consisting of hydrogen; deuterium; a halogen; an amino group; a cyano group; a nitro group; a C6-60 aryl group; a fluorenyl group; a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P; a fused ring group between a C3-60 aliphatic ring and a C6-60 aromatic ring; a C1-50 alkyl group; a C2-20 alkenyl group; a C2-20 alkynyl group; a C1-30 alkoxyl group; a C6-30 aryloxy group; Formula 1-1; Formula 1-2; and Formula 1-3, or adjacent groups thereof can bind to one another to form a ring, wherein at least one of R1 to R3 is any one of Formula 1-1 to Formula 1-3:
![]() 2) L′ is selected from the group consisting of a single bond; a C6-60 arylene group; a fluorenylene group; a fused ring group between a C3-60 aliphatic ring and a C6-60 aromatic ring; a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P; and a combination thereof; and
3) Ra and Rb are each independently selected from the group consisting of a C6-60 aryl group; a fluorenyl group; a C3-60 aliphatic ring group; a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P; and a combination thereof;
4) A is an integer of 0 to 4; b is an integer of 0 to 6; c is an integer of 0 to 3; and a+b+c is greater than or equal to 1;
5) When a, b, and care 2 or greater, a plurality of R1 to R3 are the same as or different from one another, and a plurality of R1, or a plurality of R2, or a plurality of R3 may bind to one another to form a ring;
6) X1 to X9 are each independently N or C(Rc);
7) at least one of X1 to X5 and at least one of X6 to X9 are N;
8) L1 is selected from the group consisting of a single bond; a C6-60 arylene group; a fluorenylene group; a fused ring group between a C3-60 aliphatic ring and a C6-60 aromatic ring; a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P; and a combination thereof;
9) Rc is selected from the group consisting of hydrogen; deuterium; a halogen; an amino group; a cyano group; a nitro group; a C6-60 aryl group; a fluorenyl group; a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P; a fused ring group between a C3-60 aliphatic ring and a C6-60 aromatic ring; a C1-50 alkyl group; a C2-20 alkenyl group; a C2-20 alkynyl group; a C1-30 alkoxyl group; a C6-30 aryloxy group; and —L′—N(Rc)(Rd);
10) the definitions of Rc and Rd are the same as those of Ra and Rb above;
11) the ring A of Formula 1-2 is selected from the group consisting of Formula A-1 to Formula A-16:
![]() ![]() wherein:
11-1) * is a site to be bound to a ring comprising X6 to X9;
11-2) V is N or C(Re);
11-3) W1 and W2 are each independently a single bond, —N—L3-Ar3, S, O, or CR′R″, with the proviso that W1 and W2 are not a single bond at the same time;
11-4) L3 is the same as the definition of L1 in Formula 1;
11-5) Ar3 is selected from the group consisting of a C6-60 aryl group; a fluorenyl group; a fused ring group between a C3-60 aliphatic ring and a C6-60 aromatic ring; a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P; and a combination thereof; and
11-6) Re, R′, and R″ are each selected from the group consisting of hydrogen; deuterium; a halogen; an amino group; a cyano group; a nitro group; a C6-60 aryl group; a fluorenyl group; a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P; a fused ring group between a C3-60 aliphatic ring and a C6-60 aromatic ring; a C1-50 alkyl group; a C2-20 alkenyl group; a C2-20 alkynyl group; a C1-30 alkoxyl group; a C6-30 aryloxy group; or —L′—N(Rc)(Rd); or these groups can bind to one another to form a ring; or R′ and R″ can bind to one another to form a spiro ring; and
12) The rings formed by R1 to R3, L1, L′, L3, Ar3, Ra to Rd, Rc, Re, R′, R″, and adjacent groups thereof can be each further substituted with one or more substituents selected from the group consisting of deuterium; a halogen; a silane group substituted or unsubstituted with a C1-20 alkyl group or a C6-20 aryl group; a siloxane group; a boron group; a germanium group; a cyano group; an amino group; a nitro group; a C1-20 alkylthio group; a C1-20 alkoxy group; a C6-20 arylalkoxy group; a C1-20 alkyl group; a C2-20 alkenyl group; a C2-20 alkynyl group; a C6-20 aryl group; a C6-20 aryl group substituted with a deuterium; a fluorenyl group; a C2-20 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P; a C3-20 aliphatic ring group; a C7-20 arylalkyl group; a C8-20 arylalkenyl group; and a combination thereof; or adjacent groups thereof can form a ring with one another.
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