Patent ID: 11897896
Assignee: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  H  Y | IPC C  H

Claim 1:
2. A compound having Formula 1′:, wherein each of X and Y is independently selected from the group consisting of CR″R′″, NR′, O, S and Se;
wherein each of Z1 and Z2 is independently selected from the group consisting of O, S and Se;
wherein each of R, R′, R″ and R′″ is independently selected from the group consisting of hydrogen, deuterium, halogen, nitroso, nitro, acyl, carbonyl, a carboxylic acid group, an ester group, cyano, isocyano, SCN, OCN, SF5, boranyl, sulfinyl, sulfonyl, phosphoroso, 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 heteroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted arylalkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, and combinations thereof;
wherein each R may be same or different, and at least one of R, R′, R″ and R′″ is a group having at least on electron-withdrawing group; and
wherein adjacent substituents can be optionally joined to form a ring or a fused structure.