Patent ID: 9620722
Date: 2017-04-11
CPC Classifications: C07D,C09B,C09K,H01L,H05B

Claim:
1. A compound of formula (1) or formula (2), wherein X is, identically or differently on each occurrence, N, P, or P═O; Y1 is, identically or differently on each occurrence, C(R Y Ar wherein V or Q stands for C if a group Y Ar L is a di-, tri-, tetra-, penta- or hexavalent straight-chain alkylene, alkylidene, alkyleneoxy, or thioalkyleneoxy group having 1 to 40 C atoms, or a branched or cyclic alkylene, alkylidene, alkyleneoxy, or thioalkyleneoxy group having 3 to 40 C atoms, or an alkenylene or alkynylene group having 2 to 40 C atoms, optionally substituted by in each case one or more radicals R R, R R Ar is, identically or differently on each occurrence, an aromatic or heteroaromatic ring system having 5-30 aromatic ring atoms, optionally substituted by one or more non-aromatic radicals R R m, n are, identically or differently on each occurrence, 0 or 1, wherein m=0 or n=0 means that no group Y is present; p is 2, 3, 4, 5, or 6, with the proviso that p is not greater than the maximum valence of L; wherein the following compounds are excluded from the invention: