Patent ID: 8501382

Claim:
A compound of formula wherein M is —O—, —S— or —NR 9 —; R 1 is chosen from (C 1 -C 8 )saturated hydrocarbon; (C 1 -C 8 )saturated hydrocarbon substituted with halogen, cyano or nitro; (C 1 -C 8 )silaalkane and optionally substituted phenyl; R 2 is chosen from H, (C 1 -C 6 ) hydrocarbon and (C 1 -C 6 ) hydrocarbon substituted with nitro or cyano, or taken together with the carbon to which they are attached, R 1 and R 2 form a (C 3 -C 6 ) hydrocarbon ring; R 3a is chosen from (a) —C n H m F p wherein n is 2-8, m is 0-16, p is 1-17 and the sum of m plus p is 2n+1; (b) —CH 2 C(═O)-Q; (c) —CF 2 C(═O)-Q; (d) (e) —(CH 2 ) q Cl, wherein q is an integer from 1 to 8; and (f) when none of R 1 , R 2 and R 5 contains or forms a carbocycle, R 3a may additionally be R 4 is chosen from H, (C 1 -C 6 )alkyl, —C(═O)(C 1 -C 6 )alkyl, —C(═O)(C 1 -C 6 )alkenyl, —C(═O)(C 1 -C 6 )haloalkyl, benzyl, substituted benzyl, —C(═O)phenyl, —C(═O)substituted phenyl, —SO 2 -phenyl and —SO 2 (substituted)phenyl; R 5 is chosen from H, (C 1 -C 6 ) hydrocarbon, nitro, cyano, (C 1 -C 6 ) hydrocarbon substituted with nitro or cyano, and (C 1 -C 6 )silaalkane, or together with the carbons to which they are attached, R 1 and R 5 form a (C 3 -C 6 ) hydrocarbon ring; R 6a is chosen from —CF 3 , —OCH 3 , —NO 2 , F, Cl, —CH 2 Br, —CH═CH 2 , —OCH 2 CH 2 Br, —CH 2 -Q, —O-Q, —OCH 2 CH 2 -Q, —OCH 2 CH 2 O-Q, and —CH(Q)CH 2 -Q; R 7 is chosen from one to three instances of H, —CF 3 , —OCH 3 , —CH 3 , —NO 2 , F, Br, and Cl; R 8 is chosen from H, —CF 3 , —OCH 3 , —CH 3 , —NO 2 , F, Br, and Cl; R 9 is chosen from H, (C 1 -C 6 )alkyl, —C(═O)(C 1 -C 6 )alkyl and phenyl, or taken together with R 4 , R 9 together with the nitrogen to which they are attached may form a nitrogen heterocycle, with the proviso that when R 4 and R 9 are attached to nitrogen, one of R 4 and R 9 must be an acyl, and when R 4 and R 9 together with the nitrogen to which they are attached form a heterocycle, the heterocyle must contain one or two α-oxo substituents; and Q is a polymer or oligomer; with the provisos that, (a) when R 4 , R 7 and R 8 are hydrogen, R 2 is n-propyl and R 5 is ethyl, R 6a cannot be Cl in the para position; and (b) when R 1 , R 2 and R 5 are hydrogen and R 4 is ethyl, R 3 cannot be Br in the para position.