Patent ID: 8052894

Claim:
A compound of Formula (I): wherein R 1 , R 2 , R 3 , R 4 are the same or different and each is independently H, alkyl in which one or more C and/or H may be substituted with at least one of O, N, S, Si, P and F, aralkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl; X is halogen, boronic acid or boronate ester; and R 0 and R 6 are the same or different and each is independently in each occurrence hydrogen, C 1-20 hydrocarbyl, C 1-20 hydrocarbyloxy, C 1-20 thioether, C 1-20 hydrocarbyloxycarbonyl, C 1-20 hydrocarbylcarbonyloxy, cyano, or fluoro.