Patent ID: 9741942
Date: 2017-08-22
CPC Classifications: C07D,C09K,H01L,Y02E

Claim:
1. A compound of formula (1), wherein: X is on each occurrence, identically or differently, CR or N; or two adjacent groups X together stand for a group selected from NR, O or S, resulting in the formation of a five-membered ring; Y is on each occurrence, identically or differently, Z═Z, O, S or NR, where R is not H; Z is on each occurrence, identically or differently, CR or N or the adjacent groups Z═Z together stand for a group of formula (2), L is not present for n=1 and is a single bond or a divalent group for n=2 and a trivalent group for n=3 and a tetravalent group for n=4 and a pentavalent group for n=5 and a hexavalent group for n=6; L here is bonded at any desired point of the basic structure instead of a group R; R is selected on each occurrence, identically or differently, from the group consisting of H, D, F, Cl, Br, I, CN, NO Ar R n is 1, 2, 3, 4, 5 or 6; where the following compound is excluded from the invention: