Organic electroluminescent compound and organic electroluminescent device comprising the same

1. An organic electroluminescent compound represented by the following formula 1:

wherein

X represents —O—;

R 1 to R 6 , each independently, represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di (C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di- (C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino; or may be linked to an adjacent substituent(s) to form a (3- to 30-membered), mono- or polycyclic, alicyclic or aromatic ring whose carbon atom(s) may be replaced with at least one hetero atom selected from nitrogen, oxygen, and sulfur; and the heteroaryl contains at least one hetero atom selected from B, N, O, S, Si, and P.

2. The organic electroluminescent compound according to claim 1 , wherein the substituents for the substituted alkyl, the substituted aryl, the substituted heteroaryl, the substituted cycloalkyl, the substituted alkoxy, the substituted trialkylsilyl, the substituted dialkylarylsilyl, the substituted alkyldiarylsilyl, the substituted triarylsilyl, the substituted mono- or di-alkylamino, the substituted mono- or di-arylamino, the substituted alkylarylamino, and the substituted mono- or polycyclic, alicyclic or aromatic ring of R 1 to R 6 , each independently, are at least one selected from the group consisting of deuterium, a halogen, a cyano, a carboxy, a nitro, a hydroxy, a (C1-C30)alkyl, a halo(C1-C30)alkyl, a (C1-C30)alkoxy, a (C1-C30)alkylthio, a (C3-C30)cycloalkyl, a 3- to 7-membered heterocycloalkyl, a (C6-C30)aryloxy, a (C6-C30)arylthio, a 3- to 30-membered heteroaryl unsubstituted or substituted with a (C6-C30)aryl or a di(C6-C30)arylamino, a (C6-C30)aryl unsubstituted or substituted with a 3- to 30-membered heteroaryl or a di(C6-C30)arylamino, a tri(C1-C30)alkylsilyl, a tri(C6-C30)arylsilyl, a di(C1-C30)alkyl(C6-C30)arylsilyl, a (C1-C30)alkyldi(C6-C30)arylsilyl, an amino, a mono- or di-(C1-C30)alkylamino, a mono- or di-(C6-C30)arylamino, a (C1-C30)alkyl(C6-C30)arylamino, a (C1-C30)alkylcarbonyl, a (C1-C30)alkoxycarbonyl, a (C6-C30)arylcarbonyl, a di(C6-C30)arylboronyl, a di(C1-C30)alkylboronyl, a (C1-C30)alkyl(C6-C30)arylboronyl, a (C6-C30)aryl(C1-C30)alkyl, and a (C1-C30)alkyl(C6-C30)aryl.

3. The organic electroluminescent compound according to claim 1 , wherein the compound of formula 1 is represented by any one of the following formulae 2 to 7:

wherein X, and R 1 to R 6 are as defined in claim 1 .

4. The organic electroluminescent compound according to claim 1 , wherein R 1 and R 2 , each independently, represent hydrogen, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted 5- to 30-membered heteroaryl.

5. The organic electroluminescent compound according to claim 1 , wherein R 1 represents hydrogen or the group represented by the following formula 8; and R 2 represents hydrogen, or the group represented by the following formula 9.

*-L 1 -Ar 1   (8)

*-L 2 -Ar 2   (9)

wherein

L 1 and L 2 , each independently, represent a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted 3- to 30-membered heteroarylene;

Ar 1 and Ar 2 , each independently, represent a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted 3- to 30-membered heteroaryl; and

the heteroaryl contains at least one hetero atom selected from B, N, O, S, Si, and P.

6. An organic electroluminescent selected from the group consisting of:

7. An organic electroluminescent device comprising the organic electroluminescent compound according to claim 1 .