Class 558/424 - Two benzene rings bonded directly to the same oxygen, or nitrogen bonded directly to oxygen (e.g., nitro compounds, phenoxyphenyl compounds, etc.)

Subclass of Class 558 - Organic compounds -- part of the class 532-570 series
Definition: Compounds under subclas 423 wherein the oxygen is bonded
No. of patents: 96
Last issue date: 07/07/2009

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Number	Title	Issue Date
7557237	Process for the synthesis of 3-(3-fluoro-4-hydroxyphenyl)-7-hydroxynaphthonitrile A process for making a compound of formula I and intermediate compounds thereof, wherein R1 is CN, F or Cl; R2 is H or Br; and R3 and R4 are each independently H or F. The compoun...	07/07/2009
6645904	Aminophosphonium compounds The present invention relates to compounds of the formula ##STR1## in which one, two or three of the radicals R1, R2, R3 and R4 are ##STR2## where m and n are an integer from 1 to 10, R5, R6	11/11/2003
6552214	Antimicrobial compound A compound comprises a blocked halogenated hydroxydiphenyl ether of the formula: ##STR1## where X1 is a halogen, X2 is chlorine or bromine, X3 is hydrogen, chlorine or bromine, X4 is chlorine, bromine, alkyl hav...	04/22/2003
6476277	Process for preparing hydroxyaromatics The present invention relates to a process for preparing hydroxyaromatics by oxidizing aromatics with dinitrogen monoxide in the gas phase in the presence of nanocrystalline zeolites....	11/05/2002
6407029	Mixtures comprising tetrakis(pyrrolidino/piperdino)phosphonium salts The present invention relates to mixtures comprising from 70 to 99.5% by weight of a compound of the formula (R)4 P+ X- (1) and from 30 to 0.5% by weight of a compound of the formula (R)3 P.dbd.O (2), where R is...	06/18/2002
6156801	2-phenoxyaniline derivatives A 2-phenoxyaniline derivative represented by the formula: ##STR1## wherein R1 is a hydrogen atom, an amino group or an NHCOR3 group, R2 is a halogen atom, an amino group, a cyano group, a C1-6 alkyl group, ...	12/05/2000
5910578	Phenylazoanilines Azo dyes of the formula ##STR1## where X is oxygen or a radical of the formula NR6, where R6 is hydrogen or substituted or unsubstituted C1 -C13 -alkyl, R1 is substituted or unsubstituted C1	06/08/1999
5750731	Perfluorinated aromatic compounds A perfluorinated aromatic compound represented by general formula (7): ##STR1## wherein R3 is a tetravalent perfluorinated aromatic group represented by formula (8): ##STR2## wherein (R4)s are the same, each being a carboxy...	05/12/1998
5478963	2,3-difluoro-6-nitrobenzonitrile and 2-chloro-5,6-difluorobenzonitrile-(2,3-difluoro-6-chlorobenzonitrile), process for their preparation and their use for the preparation of 2,3,6-trifluorobenzoic acid The present invention describes the novel intermediates 2,3-difluoro-6-nitrobenzonitrile and 2-chloro-5,6-difluorobenzonitrile, a process for their preparation and their advantageous use for the preparation of 2,3,6-trifluorobenzoic acid, which in turn is...	12/26/1995
5239107	Process for producing polycyanoaryl ether powder A process for producing a polycyanoaryl ether powder which comprises reacting a dihalogenobenzonitrile, a dihydric phenol and an alkali metal salt in the presence of a polymerization solvent, and distilling the solvent, while pulverizing the reaction mixt...	08/24/1993
5233073	Secondary amines containing nadic and benzocyclobutenyl groups Provided are the dialkyl amines: ##STR1## wherein Q is ##STR2## R is --CH3 or Q and a has a value of 1 to 3....	08/03/1993
5130454	Polytetrahydrofuran derivatives having terminal aromatic groups Polytetrahydrofuran derivatives of the general formula ##STR1## where n is from 2 to 70, X is the bridge member --NH-- or --O-- and R1 and R4 are each hydrogen or various radicals....	07/14/1992
5105021	Preparation of a difluorohalomethoxybenzene A higher yield of the difluorohalomethoxybenzene produced by the reaction of a metal phenolate with dibromodifluoromethane or bromochlorodifluoromethane can be obtained by conducting the addition of a metal alcoholate or a metal hydride as a reaction init...	04/14/1992
5100460	Herbicidal compounds and compositions containing them Herbicides of formula: ##STR1## in which: n=0,1, 2 f=0,1 A is chosen from the groups ##STR2## in which: Ar is chosen from the groups ##STR3## B is chosen from optionally substituted C1 -C10 alkyl and C3...	03/31/1992
5041604	Process for producing di(aryloxy)alkane A process for producing a high quality di(aryloxy)alkane with a high yield by the use of readily commercially available materials, without using any particular solvent or agent and by means of a simple operation and a general apparatus is provided, which ...	08/20/1991
4980494	Herbicidal cyanofluorophenoxyphenoxyalkanoic acids and derivatives thereof Novel 2-(4-(2'-fluoro-4'-cyanophenoxy)-phenoxy)alkanoic acids and agriculturally acceptable derivatives thereof are selective postemergent herbicides for the control of grassy weeds in valuable crops. The novel herbicides are surprisingly selective, i.e.,...	12/25/1990
4973736	Diethers of m- or p-hydroxyphenol Diethers of m- or p-hydroxyphenol, as well as the monoethers, are prepared by reacting m- or p-tert.-butoxyphenol of the formula II ##STR1## with a halogen compound in the presence of a hydroxide, carbonate and/or bicarbonate of an alkali metal or al...	11/27/1990
4960950	Formation of nitrophenyl ethers from polyols and nitroanisoles Disclosed is a novel process for effecting an ether interchange reaction by heating together in the presence of a basic catalyst, a nitroaromatic ether or thioether and an organic compound containing at least one hydroxyl or mercapto group. The novelty re...	10/02/1990
4952235	(Hetero)aryloxynaphthalenes having substituents bonded via sulphur (Hetero) aryloxynaphthalenes having substituents bonded via sulphur having herbicidal activity and of the formula ##STR1## in which m represents the number 0, 1 or 2, n represents the numbers 0 or 1, R1 represents hydrogen, halogen, cyano or tr...	08/28/1990
4950802	Process for the preparation of aryl trifluoromethyl ethers A novel method for the preparation of aryl trifluoromethyl ethers which comprises reacting a phenol, a perhalomethane, and an antimony pentahalide. For example, 4-nitrophenol may be reacted with an excess over stoichiometry of both carbon tetrachloride an...	08/21/1990
4935532	Hemiacetals All possible isomeric forms of a compound of the formula ##STR1## wherein A has a structure selected from the group consisting of ##STR2## wherein Y1 and Y2 are individually selected from the group consisting of hydrogen, f...	06/19/1990
4914244	Process for preparing difluorochloromethoxybenzenes Difluorochloromethoxybenzenes are prepared by reacting phenols with trichloromethyl chloroformate (=di-phosgene) in the presence of hydrogen fluoride....	04/03/1990
4913729	Herbicidal 4-trifluoromethyl-3'-substituted amine-4'-nitro diphenyl ethers The herbicidal 4-trifluoromethyl-3'-substituted amino-4'-nitro diphenyl ethers comprise a class of compounds that are highly effective herbicides....	04/03/1990
4889855	Heterocyclic compounds and their preparation and use Heterocyclic dihydroxyquinoxaline compounds having the formula ##STR1## wherein --A-- together with the two carbon atoms denoted as 1 and 2 is selected from ##STR2## R1, R2 and R3 are independently H, halogen, CN...	12/26/1989
4845285	Chemical process A process for preparing a compound of formula (II): ##STR1## or a tautomer or salt thereof in substantially pure form wherein R1 is C1-6 alkyl optionally substituted by one or more halogen atoms; R3 is hydrogen, fluor...	07/04/1989
4845119	Alkene, alkyne or cycloalkylene derivatives A compound of the formula ##STR1## wherein X has the formula --CR5 .dbd.CR6 --, --C.tbd.C-- or ##STR2## wherein ring A is phenyl, naphthyl or heterocyclic; wherein R1 is hydrogen, alkyl, alkanoyl or aroyl; wherei...	07/04/1989
4814483	Process for the preparation of optionally substituted 2-benzyl-toluenes Optionally substituted 2-benzyl-toluenes can be prepared by reaction of optionally substituted 2-benzyl-tert.-alkyl-toluenes with an optionally substituted aromatic hydrocarbon in the presence of anhydrous iron-(III) halide. The reaction is carried out at...	03/21/1989
4791123	Insecticidal triffluormethyl alkane derivatives There are provided new alkane and alkoxyalkane derivatives of the general formula I ##STR1## in which R1, R2, R3, R4 and A have the meanings given in the description, processes for their preparation and ins...	12/13/1988
4788305	Novel resolution process Compounds of the formula ##STR1## wherein A is a hydrocarbon chain containing 1 to 16 groups, the said chain containing at least one heteroatom, at least one unsaturation, the assembly of the group constituting the chain may be a mono- or polycyclic ...	11/29/1988
4699993	Perfluoroalkylnaphthalene compounds Novel compounds having greatest interest as biologically-active materials for the treatment of diabetic complications in mammals, or intermediates for such materials, are perfluoroalkyl compounds corresponding to the formula: ##STR1## wherein R ...	10/13/1987
4657580	Herbicidally active substituted diphenyl ether oxime derivatives This invention relates to certain herbicidally active substituted diphenyl ether oxime derivatives, herbicidal compositions of the same and the use thereof for preemergence and postemergence control of noxious plants, i.e., weeds....	04/14/1987
4609759	Process for preparing amino-2, 4-dinitroaromatic herbicides This invention pertains to a process for producing 2,6 dinitroaniline derivates which are suited as intermediates for herbicides. The process involves the formation of a 1,2,6-trinitro-aromatic isomer and the subsequent nucleophilic displacement of the 1-...	09/02/1986
4607035	1-phenoxy(phenylthio)-4-arylalkynyloxy-benzene derivatives endowed with a juvenile hormonic and an acaricide activity There are described 1-phenoxy(phenylthio)-4-aryl-alkynyloxy-benzene derivatives endowed with a juvenile hormonic activity towards insects and with an acaricide activity. The use of these compounds for controlling insects infestations in both the agrarian ...	08/19/1986
4603222	Method for the preparation of nitrodiphenyl ethers Diphenyl ethers of the formula ##STR1## wherein m is 1-3, n is 1 or 2, R is hydrogen, carboxy, carboxylate salt or ester, formyl oxime, cyano, alkyl, alkoxy, chloro, bromo, or N, N-dialkyl amino, are prepared by reacting a chloro-fluoro-benzotrifluor...	07/29/1986
4599362	2-aryl-ethyl ether derivatives and insecticidal and acaricidal agents containing said derivatives The present invention relates to 2-arylethyl ether or thioether derivatives represented by the following general formula [I]: ##STR1## wherein Ar stands for an aryl group, R1 stands for straight or branched chain alkyl group of 1 to 6 carb...	07/08/1986
4596680	Process for manufacturing aryl ethers having different substituents on the two aromatic rings A asymmetrical aryl ether of the formula wherein Ar and Ar' are each a divalent aromatic radical, X and Y are electron attracting atoms or groups which differ from each other or have different positions on the corresponding aromatic radicals, is produced by ...	06/24/1986
4570005	Process for the preparation of 2-arylpropyl ether or thioether derivatives 2-Arylpropyl ether or thioether derivatives represented by the following general formula [I]: ##STR1## wherein Ar stands for an aryl group, R stands for a methyl or ethyl group, Y stands for an oxygen or sulfur atom, and B stands for a group rep...	02/11/1986
4564712	Process for the preparation of diphenyl ethers Diphenyl ethers are prepared by Ullmann reaction of alkali metal phenolates with halobenzenes in the presence of basic copper carbonate and/or copper salts of lower aliphatic carboxylic acids as catalysts. These special catalysts have a better catalytic a...	01/14/1986
4551264	Polyhalogenoaromatic compounds for liquid crystal compositions New polyhalogenoaromatic compounds of Formula I ##STR1## wherein Y and Z are each independently alkyl, alkoxy or alkanoyl each of 1 to 12 C atoms, --COOR1, --O--CO--R1, CN, NO2, NH2 or OH; Q is one or two i...	11/05/1985
4539160	Ketene O,O-acetals and their preparation Useful novel ketene O,O-acetals of the formula I ##STR1## where R1 is a tertiary alkyl radical of 4 to 6 carbon atoms or unsubstituted or halogen-substituted phenyl, R2 is hydrogen and R3 and R4 independent...	09/03/1985

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Class 558/424 - Two benzene rings bonded directly to the same oxygen, or nitrogen bonded directly to oxygen (e.g., nitro compounds, phenoxyphenyl compounds, etc.)