Patent ID: 7968734

Claim:
A compound according to the chemical structure(s): Where X is CH 2 ; Y is CH 2 ; R b is H; R 1 is NHC(═O)R; R 2 is a ═O group; R 3 is H or an optionally substituted aryl group; R is H, an optionally substituted C 2 -C 20 alkyl, phenyl group which is optionally substituted with F, Cl or NO 2 , a p-methylphenyl group, a p-trifluoromethylphenylgroup, an optionally substituted 2,6-di(C 1 -C 4 ) alkylphenyl group or an optionally substituted 2,4,6-tri(C 1 -C 4 ) alkylphenyl group where the alkyl groups, if substituted, are CF 3 groups, wherein said compound is free from a metal catalyst.