Patent ID: 7091232

Claim:
A compound of the formula where X is O or S; the dashed lines represent a bond, or absence of bond with the proviso that only one double bond is present in the ring and that two adjoining dashed lines do not both represent a bond; R 1 , R 2 , R 3 , and R 4 are independently H, phenyl, said phenyl group being optionally substituted independently with one, two or three C 1-6 alkyl, SO 3 H, N 3 , halogen, CN, NO 2 , NH 2 , C 1-6 alkoxy, C 1-6 thioalkoxy, C 1-6 alkylamino, C 1-6 dialkylamino, C 2-6 alkynyl or C 2-6 alkenyl groups, or said R 1 , R 2 , R 3 , and R 4 groups are independently alkyl of 1 to 4 carbons, cycloalkyl of 3 to 5 carbons, CH 2 CN, CH 2 SR 5 , CH 2 NR 6 R 6 , COR 5 , CH 2 OR 5 , OR 6 , SR 6 . NR 6 R 6 , alkenyl having 1 to 4 carbons, alkynyl having 1 to 4 carbons, cycloalkyl having 3 to 6 carbons, F, Cl, Br, I, CF 3 , or CN, an oxygen double bonded to the ring carbon with the proviso that the adjacent dashed line within the ring represents absence of a bond; R 5 is H, OR 7 , alkyl of 1 to 4 carbons, CF 3 , cycloalkyl of 3 to 6 carbons, phenyl, phenyl substituted with one or two alkyl groups of 1 to 4 carbons, with F, Cl, Br, I, or with CF 3 ; R 6 is H, alkyl of 1 to 4 carbons, allyl, cycloalkyl of 3 to 6 carbons, phenyl, phenyl substituted with one or two alkyl groups of 1 to 4 carbons, with F, Cl, Br, I, or with CF 3 , and R 7 is H, alkyl of 1 to 4 carbons, allyl, cycloalkyl of 3 to 6 carbons, phenyl, phenyl substituted with one or two alkyl groups of 1 to 4 carbons, with F, Cl, Br, I, or with CF 3 .