Abstract: A complex catalyst for asymmetric epoxidation of enones, which comprises:

Abstract: An optically active epoxyenone derivative of the following formula (1): 1

Abstract: A complex catalyst for asymmetric epoxidation of enones containing an optically active binaphthol, lanthanum triisopropoxide, triphenylphosphine oxide substituted with electron withdrawing groups in the parapositions of the phenyl groups, and cumene hydroperoxide or tert-butyl hydroperoxide.

Abstract: A separating agent that serves as an optical resolution agent is composed of a novel, useful optically active polymer. The separating agent is obtained through anionic polymerization of a novel maleimide and serves to separate optically active compounds.

Abstract: A complex catalyst for asymmetric epoxidation of enones, which comprises:

Abstract: An optically active epoxypropionate derivative of the following formula (1): 1

Abstract: The subject of the invention is to provide a new high-performance flame retardant having excellent flame resistant effect and smoke-suppressing effect and generating no hazardous gas, and a new flame retardant resin-composition used it. As a means for solution, a flame retardant comprising ethylenediamine-containing zinc phosphate and other phosphorus-containing compound is formulated in amounts of 10 to 200 parts by weight to 100 parts by weight of resin.

Abstract: Brominated p-cumylphenol represented by the formula (1) described hereinafter and derivative thereof represented by the formula (2) described hereinabove, process for the preparation of the same, and flame-retardant resin compositions containing the same, are disclosed. Those compounds are useful flame retardant, and can be blended with various thermosetting resins or thermoplastic resins to obtain flame retardant resin compositions.

Abstract: Processes for producing optically active ester derivatives are disclosed. According to the present invention an optically active aryloxyphenoxy propionate derivative is produced by reacting a chlorinated heterocyclic aromatic compound with (2R)-2-(4-hydroxyphenoxy)propionic acid tetrahydrofurfuryl ester in an anhydrous solvent in the presence of a base. According to the present invention, an optically active propionate derivative of the formula [I] ##STR1## (wherein R represents hydrogen or 3-chloro-5-trifluoromethyl-2-pyridyl group) is produced by reacting a corresponding optically active methyl propionate derivative with tetrahydrofurfuryl alcohol, or by reacting a corresponding optically active propionic acid derivative with tetrahydrofurfuryl alcohol, or by reacting (2S)-tetrahydrofurfuryl 2-chloropropionate with a corresponding phenol derivative in specific conditions.

Abstract: A process of producing 2-(4'-hydroxyphenoxy)-3-chloro-5-trifluoromethylpyridine with high efficiency, which is suited for industrial scale production is disclosed. In the process of the present invention, hydroquinone, a dehydrohalogenating agent in the amount of 0.10-0.70 equivalent of the hydroquinone, and a mixed solvent of a polar aprotic solvent and an aromatic hydrocarbon solvent are mixed. The resulting mixture is then heated to reflux at atmospheric pressure to dehydrate the mixture. Then 2,3-dichloro-5-trifluoromethylpyridine in the amount of 0.20-0.95 equivalent of the dehydrohalogenating agent is added to the mixture, and the resulting mixture is allowed to react at a temperature of 100.degree.-170.degree. C.

Abstract: A 4,4'-bis(phthalimido)diphenyl sulfone compound having the formula: ##STR1## wherein X is a halogen atom, k=0 to 4, l=0 to 4, m=0 to 4 and n=0 to 4, provided k+l+m+n>1.