摘要:
This invention provides certain diphenylmethane derivatives, their pharmaceutical formulations, and their use in treating inflammation and arthritis in mammals.
摘要:
3-oxonitriles are produced by reaction of carboxylic acid esters with carboxylic acid nitriles in the presence of 70 to 80% suspension of sodium hydride in white oil. The oxonitrile are intermediate products for the production of 3-oxocarboxylic acid amides or esters and pesticides.
摘要:
There is described a process for preparing carbonyl compounds of formula: ##STR1## by oxidation of compounds of formula: ##STR2## wherein X=--CN, --COOR, Y=--COOR.sub.1, --CN, and R, R.sub.1, like or unlike each other, are inert radicals, by employing oxygen or air as oxidants, at least a catalyst selected from the salts of organic or inorganic acids of Mn, Co, Cu and Fe, from 0 to 60 moles of an alkaline salt of an aliphatic carboxylic acid per gram-atom of catalyst metal, in a polar solvent, at temperatures ranging from 30.degree. C. to 200.degree. C. and maintaining the reaction medium anhydrous.The present invention relates to a process for preparing carbonyl compounds by catalytic oxidation of compounds containing an activated methylene group.
摘要:
A method for the preparation of a compound of the formula ##STR1## or salt thereof bearing one or more .alpha.-hydroxymethylene groups, wherein the univalent moiety R is hydrogen, a straight chain or branched alkyl group of 1 to 20 carbon atoms, a straight chain or branched moiety of the formula--(CH.sub.2).sub.n --COOR.sup.1, OR.sup.1, CF.sub.3,wherein n is from 0 to 5, a straight chain or branched moiety of the formula ##STR2## wherein each R.sup.1 independently represents an alkyl radical of 1 to 12 carbon atoms, or a univalent phenol moiety and n has the meaning above, a substituted or unsubstituted moiety of the formula ##STR3## wherein R.sup.2 is hydrogen, an alkyl group of 1 to 6 carbon atoms, a --(CH.sub.2).sub.n --COOR.sup.1, chlorine, bromine, --OR.sup.1, CF.sub.3, --(CH.sub.2).sub.n --CN, where n and R.sup.1 have the meanings given above, a ring system of the heterocyclic or isocyclic, monocyclic or polycyclic structure which comprises contacting a nitrile of the formulaR--CH.sub.2 --CN IIwherein R has the meaning given above with carbon monoxide in the presence of an alcoholate and a solvent. Thereafter, the so formed salt can be separated or, if desired, the same can be converted into the free form of the compound Ia or Ib by acidification. Also disclosed are new .alpha.-hydroxymethylene and nitriles as well as their corresponding salts.
摘要:
Production of carbonyl compounds substituted in the .alpha.-position and having the formula: ##EQU1## wherein R.sup.1 is alkyl, aralkyl, phenyl, toluyl, naphthyl, alkoxy or amino; R.sup.2 is hydrogen ##EQU2## A is hydrogen, alkyl, halo or ##EQU3## R.sup.6 is hydrogen or methyl, and R.sup.11 is alkyl; wherein said compounds are formed by reacting a sulfur ylide having the formula: ##EQU4## wherein Y is the radical ##EQU5## and R.sup.9 and R.sup.10 are alkyl or phenyl, with a solution containing both an electrophilic agent A' that is converted into the radical A and a nucleophilic agent B' that is converted into the radical B. The resulting carbonyl compounds are useful as starting materials for the production of paper, textile, and leather auxiliaries, plant protection agents, alkyd resins, polyesters and polyamides.
摘要翻译:制备在α-位取代的具有下式的羰基化合物:其中R1是烷基,芳烷基,苯基,甲苯基,萘基,烷氧基或氨基; R2是氢R6R6O R6R6O || PARALLEL || PARALLEL -CH-CH-CN,-C-R1或-CH-CH-C-OR11; A是氢,烷基,卤素或R6R6 | -CH-CH-CN R6是氢或甲基,R11是烷基; 其中所述化合物通过使具有下列结构式的硫叶立德反应形成:其中Y是基团CH 3 R 9 = S ANGLE或= S ANGLE PARALLEL OCH 3 R 10,R 9和R 10是烷基或苯基,与 含有转化为自由基A的亲电子试剂A'和转化为自由基B的亲核试剂B'的溶液。得到的羰基化合物可用作生产纸,纺织品和皮革助剂的原料 植物保护剂,醇酸树脂,聚酯和聚酰胺。
AND ARE STABILIZERS FOR ORGANIC MATERIALS AGAINST DETERIORATION BY OXYGEN, LIGHT AND HEAT. In the formulae, R1 and R2 is alkyl, R3 is -CN or -COOR4, and R4 is an alkyl, aralkyl, cycloalkyl, ether or thioether group.
摘要:
A process for the preparation of a benzylidene compound of the formula ##STR1## in which R.sup.1 is hydrogen or one or two substituents independently selected from the group consisting of nitro, cyano, halogen, SO.sub.3 H, alkyl, alkoxy and fluorinated alkyl, each with 1 to 4 C atoms and two or three fluorine substituents, andR.sup.3 is alkyl with 1 to 10 C atoms, which is optionally interrupted by an oxygen in the chain or is optionally substituted by fluorine, chlorine, hydroxyl or a methylbenzylamine group, comprising reacting an acetal of the formula ##STR2## in which R.sup.2 each independently is alkyl with 1 to 6 C atoms, which is optionally substituted by phenyl, or the two radicals R.sup.2 conjointly form an alkylene radical with 1-6 C atoms,with a .beta.-ketocarboxylic acid ester of the formulaCH.sub.3 CO--CH.sub.2 --COOR.sup.3in the presence of an acid at a temperature between about 40.degree. and 120.degree..
摘要:
This invention relates to the stoichiometric condensation of substituted phenylacetonitriles with dibasic carboxylic anhydrides. The resulting cyano-keto-acids are obtained in good yield and can be used to prepare biologically active 2-aryl-1,3-cyclohexanediones without elaborate purification.
摘要:
Acyl cyanides of the formula ##STR1## in which R represents an optionally substituted alkyl group having 1 to 8 carbon atoms, an optionally substituted cycloalkyl group having 3 to 12 carbon atoms or an optionally substituted aryl group, or an optionally substituted 5-membered or 6-membered heterocyclic radical which additionally can be fused to a benzene ring,are obtained in high yields by reacting carboxylic acid anhydrides of the formula R--CO--O--CO--R (II) with trimethylsilyl cyanide, (CH.sub.3).sub.3 Si--CN (III), if appropriate in the presence of a catalyst and, if appropriate, in the presence of a diluent, at a temperature between 50.degree. and 250.degree. C. The acyl cyanides can be used as intermediate products, for example, for the preparation of certain herbicidally active compounds of the triazinone series.
摘要:
Substituted-phenyl alkylidene acetoacetonitriles which are useful as anti-inflammatory agents and as inhibitors of the progressive joint deterioration characteristic of arthritic disease.