Patent ID: 8217188

Claim:
A compound comprising the formula G wherein R 1 comprises hydrogen, a linear or branched alkyl group, a cycloalkyl group, a linear or branched alkoxy group, an aryl or heteroaryl group, or an aralkyl or heteroaralkyl group; EWG comprises an electron-withdrawing group comprising —C(O)R 5 at C2 or C3, wherein R 5 comprises a straight or branched alkyl group or aryl group; p is from one to four; q is one or two; r is from one to three; each R 6 , R 6 ′ and R 7 comprises, independently, a linear or branched alkyl group, a cycloalkyl group, a linear or branched alkoxy group, a haloalkyl group, a halocycloalkyl group, a haloalkoxy group, an aryl or heteroaryl group, an aralkyl or heteroaralkyl group, or a substituted or unsubstituted phenoxy or naphthoxy group; and each R 9 comprises, independently, hydrogen, a hydroxyl group, an alkyl group, an aryl group, or an alkoxy group, wherein when two adjacent R 9 groups are present, they may form at least one aromatic or non-aromatic cyclic group, optionally substituted with at least one linear or branched alkyl group, a cycloalkyl group, a linear or branched alkoxy group, an aryl or heteroaryl group, or an aralkyl or heteroaralkyl group.