Abstract: Disclosed are novel compounds having the formula ##STR1## where A is O or NR, each R' independently selected from hydrogen, R, or M, R is alkyl, aryl, alkaryl, or aralkyl from C.sub.1 to C.sub.12, and M is a cation. Also disclosed is a method of making those compounds and a method of making a mixture of 3,5-difluorobenzoic acid and 1,3-difluorobenzene by reacting 3,5-dichlorophthalic anhydride with a fluorinating agent to produce 3,5-difluorophthalic anhydride, reacting the 3,5-difluorophthalic anhydride with water to produce 3,5-difluorophthalic acid, and decarboxylating the 3,5-difluorophthalic acid.

Abstract: Novel halogenated trifluoromethylbenzenes have the structural formula ##STR1## wherein X is halogen, preferably Cl, F or Br, and R is a group selected from the group consisting of --COOH, --C(O)NH.sub.2 and --CN. These compounds are intermediates for pesticidal trifluoromethyl diphenyl ethers and are converted thereto by replacing the fluorine para to the trifluoromethyl with substituted phenoxy group in aromatic nucleophilic substitution.

Abstract: p-Trifluoromethyl benzaldehydes are prepared by the catalytic reduction reaction of p-trifluoromethyl benzonitriles with hydrogen in an aqueous formic acid media in the presence of a nickel/aluminum alloy catalyst.

Abstract: A process for the preparation of pentahaloethoxy benzoyl halide compounds comprisingA) chlorinating p-cresyl trifluoroacetate to form p-.alpha., .alpha.-dichloro-.beta.-,.beta.-,.beta.-trifluoroethoxy benzotrichloride;B) converting the p-.alpha., .alpha.-dichloro-.beta.-,.beta.-,.beta.-trifluoroethoxy benzotrichloride to p-pentafluoroethoxy benzoyl fluoride.

Abstract: A process for the preparation of 3-chloro-4,5-difluorobenzonitrile comprising the steps of(a) reacting an alkali metal fluoride with 4-chloro-3,5-dinitrobenzonitrile to form a 4-fluoro-3,5-dinitrobenzonitrile product;(b) chlorodenitrating the 4-fluoro product of step (a) to form the corresponding 3,5-dichloro-4-fluorobenzonitrile compound; and(c) reacting the 3,5-dichloro-4-fluorobenzonitrile compound prepared in step (b) with an alkali metal fluoride to form 3-chloro-4,5-difluorobenzonitrile.

Abstract: A process is disclosed for purifying and stabilizing a mixture of regular chlorotrifluoroethyelne telomers of formula RCXCl(CF.sub.2 CFCl).sub.n Br from bromine-containing irregular telomer impurities of similar molecular weight. The telomer mixture is produced by reacting chlorotrifluoroethylene with a telogen of formula RCXClBr, where R is CF.sub.2 Br, or Cl, and X is Cl or F. The telomer mixture is then chlorinated using either elevated temperature alone (100.degree. C.-350.degree. C.), or a combination of elevated temperatures (100.degree. C.-200.degree. C.) and light energy primarily of the wavelength region greater than about 3000.degree.A. Under these conditions, CFClBr telomer end group of the regular or normal telomer is chlorinated to form --CFCl.sub.2 end groups, while the bromine-containing irregular telomer impurities (whose bromine-containing end groups are substantially only --CF.sub.2 Br) are substantially not chlorinated.

Abstract: A process for the preparation of high purity 5-chloroisophthaloyl chloride comprises reacting isophthaloyl chloride with liquid chlorine in the presence of a Lewis acid catalyst at a temperature of about 55.degree. Celsius to 80.degree. Celsius under autogenous pressure.

Abstract: A process for the preparation of chloro-difluorobenzene compounds of the formula ##STR1## where R is CN or CF.sub.3, comprises the steps of (A) reacting an alkali metal fluoride with 4-chloro-3,5-dinitrobenzonitrile or 4-chloro-3,5-dinitrobenzotrifluoride to form the corresponding 4-fluoro-3,5-dinitrobenzonitrile or 4-fluoro-3,5-dinitrobenzotrifluoride product.(B) chlorodenitrating the 4-fluoro product of step (A) to form the corresponding 3,5-dichloro-4-fluorobenzonitrile or 3,5-dichloro-4-fluorobenzotrifluoride compound.(C) reacting the 3,5-dichloro-4-fluorobenzonitrile or 3,5-dichloro-4-fluorobenzotrifluoride compound prepared in step (B) with an alkali metal fluoride to form the corresponding 3-chloro-4,5-difluorobenzonitrile or 3-chloro-4,5-difluorobenzotrifluoride compound.

Abstract: A process for the preparation of meta-substituted diaryl ethers comprises reacting an ortho-haloaryl compound with a phenol compound in a non-aqueous medium in the presence of an alkaline metal base. In a specific embodiment m-phenoxytoluene is prepared by reacting orthochlorotoluene with phenol in the presence of an alkaline metal hydroxide in a substantially non-aqueous liquid medium.

Abstract: Halogenated derivatives of the Diels-Alder adducts of norbornenes and halocyclopentadienes are excellent fire retardant additives for polymers free of nitrogen in the monomeric units of the polymer chain, the additive-containing polymers being characterized by exceptional heat stability; excellent mechanical properties and improved molding characteristics.

Abstract: A process for the preparation of compounds of the formulaR.sub.n Ar(CF.sub.w' X.sub.p').sub.Zcomprises contacting compounds of the formulaR.sub.n Ar(CF.sub.w X.sub.p).sub.Zin the liquid phase, with hydrogen fluoride in the presence of fluosulfonic acid whereinAr is arylR is a substituent on the aryl nucleus selected from the group consisting of aryl, substituted aryl, halogen, alkyl, alkoxy, and substituted alkyl;N is 0 to 9;X is halogen atom other than fluorine;W is 0 to 2;P is 1 to 3;W' is 1 to 3, and is greater than w;P' is 0 to 2, and is less than p;W + p is 3;W' + p' is 3;Z is 1-10; andThe maximum value of n + Z is 10.

Abstract: Halogenated derivatives of the Diels-Alder adducts of norbornenes and halocyclopentadienes are excellent fire retardant additives for polymers, which additives are characterized by exceptional heat stability.