The present invention relates to a compound of formula (I): wherein: R.sup.8 and R.sup.9, independently of each other, are hydrogen, fluorine or C.sub.1-C.sub.3alkyl; R.sup.10 is hydrogen or methyl (preferably hydrogen); and the other substituents are as defined herein; and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are thought to be suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof. ##STR00001##

The present invention relates to a compound of formula (I): wherein: R.sup.8 and R.sup.9, independently of each other, are hydrogen, fluorine or C.sub.1-C.sub.3alkyl; R.sup.10 is hydrogen or methyl (preferably hydrogen); and the other substituents are as defined herein; and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are thought to be suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof. ##STR00001##

Dicyclopentadiene (DCPD) derivatives of following general formula (I); their preparation and use thereof, especially as monomers in polymerization reactions, such as olefin polymerization or ring-opening metathesis polymerization (ROMP).

##STR00001##

Dicyclopentadiene (DCPD) derivatives of following general formula (I); their preparation and use thereof, especially as monomers in polymerization reactions, such as olefin polymerization or ring-opening metathesis polymerization (ROMP).

##STR00001##

Highly active, recoverable and recyclable transition metal-based metathesis catalysts and their organometallic complexes including dendrimeric complexes are disclosed, including a Ru complex bearing a 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene and styrenyl ether ligand. The heterocyclic ligand significantly enhances the catalytic activity, and the styrenyl ether allows for the easy recovery of the Ru complex. Derivatized catalysts capable of being immobilized on substrate surfaces are also disclosed. The present catalysts can be used to catalyze ring-closing metathesis (RCM), ring-opening (ROM) and cross metatheses (CM) reactions, and promote the efficient formation of various trisubstituted olefins at ambient temperature in high yield.

Highly active, recoverable and recyclable transition metal-based metathesis catalysts and their organometallic complexes including dendrimeric complexes are disclosed, including a Ru complex bearing a 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene and styrenyl ether ligand. The heterocyclic ligand significantly enhances the catalytic activity, and the styrenyl ether allows for the easy recovery of the Ru complex. Derivatized catalysts capable of being immobilized on substrate surfaces are also disclosed. The present catalysts can be used to catalyze ring-closing metathesis (RCM), ring-opening (ROM) and cross metatheses (CM) reactions, and promote the efficient formation of various trisubstituted olefins at ambient temperature in high yield.

The present invention relates to novel effective alkynyl-substituted N-phenylpyrrolidine-2,4-diones according to the general formula (I) or agrochemically acceptable salts thereof,

##STR00001##

where X=C.sub.1-C.sub.4-alkyl, C.sub.1-C.sub.4-haloalkyl or C.sub.3-C.sub.6-cycloalkyl, Y=C.sub.1-C.sub.4-alkyl or C.sub.3-C.sub.6-cycloalkyl, R.sup.1=hydrogen, C.sub.1-C.sub.6-alkyl, or C.sub.3-C.sub.6-cycloalkyl, R.sup.2=hydrogen or methyl, R.sup.3=C.sub.1-C.sub.6-alkyl or C.sub.1-C.sub.6-alkoxy-C.sub.2-C.sub.6-alkyl, G=hydrogen, a cleavable group L or a cation E.

The invention further relates to a herbicidal composition comprising a compound of the general formula (I) and to the use of the compounds according to the invention for controlling weeds and weed grasses in crops of useful plants.

This present disclosure relates to a method of stimulating an immune response using compounds that activate protein kinase C (PKC), including for treatment of a cancer, a precancerous lesion, a benign tumor, or a wound.

The present disclosure features a strain-promoted [2+2+2] reaction that can be carried out under physiological conditions. In general, the reaction involves reacting a pi-electrophile with a low lying LUMO with a quadricyclane on a biomolecule, generating a covalently modified biomolecule. The selectivity of the reaction and its compatibility with aqueous environments provides for its application in vivo and in vitro. The reaction is compatible with modification of living cells. In certain embodiments, the pi-electrophile can comprise a molecule of interest that is desired for delivery to a quadricyclane-containing biomolecule via [2+2+2] reaction.

The present disclosure features a strain-promoted [2+2+2] reaction that can be carried out under physiological conditions. In general, the reaction involves reacting a pi-electrophile with a low lying LUMO with a quadricyclane on a biomolecule, generating a covalently modified biomolecule. The selectivity of the reaction and its compatibility with aqueous environments provides for its application in vivo and in vitro. The reaction is compatible with modification of living cells. In certain embodiments, the pi-electrophile can comprise a molecule of interest that is desired for delivery to a quadricyclane-containing biomolecule via [2+2+2] reaction.