Patent ID: 8765161

Claim:
A compound of Formula (I): wherein: i is an integer selected from 1 through 4; y 1 and y 2 are each independently selected from 0, 1, 2, 3 and 4; X 1 and X 2 , at each occurrence, are independently bromine (Br) or iodine (I); X is oxygen (O), sulfur (S), or NR 4 ; where R 4 is selected from the group consisting of hydrogen and alkyl containing from 1 to 6 carbon atoms; R 3 is an optionally substituted C 1-30 alkyl; and R 6 is selected from the group consisting of hydrogen, alkyl, aryl, alkyaryl, heteroalkyl and heteroalkylaryl, wherein the non-hydrogen groups contain up to 30 carbon atoms, wherein the heteroalkyl group contains from 1 to 10 heteroatoms independently selected from O, NR 3 and S, and wherein the heteroalkylaryl group contains from 1 to 3 heteroatoms independently selected from O, N 3 and S; wherein the and —X 1 and —OH groups on the left phenyl ring, at each occurrence, are independently at o-, m-, or p-positions.