Abstract: An optically active epoxyenone derivative of the following formula (1): wherein R1 is a methyl group, an ethyl group or a C3-10 branched, linear or cyclic alkyl group, and R2 is a phenyl group, a substituted phenyl group or a tert-butyl group.

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

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: 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: A process for producing brominated acenaphthylene condensates of the formula: ##STR1## wherein x is 1 or 2, y is an integer from 1 to 6 and n is 1 or more, from elementary units of the following formulas: ##STR2## wherein y is as defined above, comprising, (A) brominating the side chain of the acenaphthene with 0.2 to 2.0 times as many moles of bromine as acenaphthene, said bromination initiated by ultraviolet radiation or by a radical initiator in a halogenated hydrocarbon solvent, (B) adding a Lewis acid catalyst to the reaction solution of step (A) to promote the condensation of the brominated acenaphthene product of step (A), (C) adding to the reaction solution of step (B) an equimolar or more amount of bromine relative to the amount of acenaphthene starting material, to further brominate and condense the brominated acenaphthene and/or brominated acenaphthene condensates; and (D) dehydrobrominating the brominated acenaphthene condensates.

Abstract: A method for preparing Con-BAN, in which Con-AN is reacted with bromine in the presence of an iron Lewis acid catalyst and in which the solution of Con-AN and bromine are supplied simultaneously at a given rate into a reactor already containing a halogenated hydrocarbon and an iron catalyst.

Abstract: A method for preparing bis[.beta.-(N,N-dimethylamino)ethyl]ether characterized by performing a one stage reaction at a temperature of below 100.degree. C. wherein vapor of sulfuric anhydride is being introduced into a mixed solution consisting of sodium N,N-dimethylaminoethoxide, N,N-dimethylethanolamine and dioxane.

Abstract: A process for brominating m-phenoxytoluene with a polyhaloethane having the formula ##STR1## wherein W and Z respectively represent Cl or Br and X and Y respectively represent Cl, Br or H in a liquid phase.