Patent ID: 8785655

Claim:
A compound having general formula VII wherein R 1 is a C 1 -C 4 alkyl; R 2 is —H or a C 1 -C 4 alkyl; R′ is selected from the group consisting of —H and a C 1 -C 6 alkyl, wherein the C 1 -C 6 alkyl group may be branched or unbranched; R 3 is a C 1 -C 6 alkyl or a C 1 -C 6 alkyl ether group, either the C 1 -C 6 alkyl or the C 1 -C 6 alkyl ether group may be branched or unbranched, and the alkyl ether group has at least one ether linkage in the alkyl chain; and R 4 , R 5 , R 6 , R 7 , and R 8 are each independently selected from the group consisting of —H, hydroxy, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, nitro, halo, acyl, phosphine (PR 2 ), diarylphosphine (PAr 2 ), phosphate, phosphite, sulfate, sulfite, phosphonamide, phosphinamide, sulfonamide, sulfonimide, sulfinamide, sulfinimide, carboxylic ester, carbonate, and carbamate, or two adjacent substitutions together form a C 1 -C 4 alkylenedioxy ring; and A is OctOSO 3 , NTf 2 or N(CN) 2 .