Abstract:
An aromatic ketone having the formula XArCOPhPhOH is made by contacting an ester of formula XArCOOPhPh, whereAr is a divalent mono- or poly - aromatic group which may optionally be substituted;Ph is para-phenylene; andX is hydrogen or halogen or a nitro-, alkylsulphonyl-, arylsulphonyl-, alkylcarbonyl- or hydrocarbon groupwith a Friedel Crafts catalyst comprising one or more Lewis acids in an amount of at least 2.2 moles of such catalyst for each mole of the ester.
Abstract:
The invention relates to cycloalkyl substituted 4-aminophenyl derivatives of formula (I) ##STR1## wherein R is C.sub.1 -C.sub.4 alkyl:n is an integer of 1 to 5; and either(a) A is ##STR2## and B is --O--, --NH-- or --CH.sub.2 --; or (b) A is --CH.sub.2 -- and B is --O--, --NH--, --CH.sub.2 -- or ##STR3## or (c) A is --O-- and B is ##STR4## or --CH.sub.2 --; or (d) A is --NH-- and B is ##STR5## or --CH.sub.2 -- and their pharmaceutically acceptable salts.The scope of the invention includes also a process for preparing the said compounds of formula (I) and pharmaceutical compositions containing same.The compounds of the invention show aromatase inhibiting activity and can be useful, e.g., in treating hormone-dependent tumors and prostatic hypertrophy or hyperplasia.
Abstract:
Substituted diphenyl ethers of the formula ##STR1## where Z.sub.1, Z.sub.2 and Z.sub.3 are hydrogen, halogen, nitro, cyano, carboxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylmercapto, haloalkylmercapto, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl or haloalkylsulfonyl, Z.sub.4 is hydrogen, cyano, alkyl, alkoxy, acetoxy or alkylmercapto, Y is hydrogen, halogen, cyano or nitro, X is oxygen, sulfur, sulfinyl or sulfonyl, and A is hydrogen, unsubstituted or substituted alkyl ##STR2## and can also be sulfonyl ##STR3## when X is oxygen, and, when Z.sub.4 is alkoxy or alkylmercapto, can also be a methylene chain --(CH.sub.2).sub.m -- by which the radicals Z.sub.4 --CH--X-- are bonded to form a ring, R.sub.1 is hydrogen, methyl, ethyl or n-propyl, R.sub.2 is cyano, methoxy, ethoxy or ##STR4## where B is OH, ONa, O--alkyl, unsubstituted or substituted phenoxy, --NH.sub.2, --NH--alkyl or --N(alkyl).sub.2, n is 1, 2 or 3, R.sub.3 and R.sub.4 are hydrogen, halogen, methyl, nitro, cyano, methoxy, carboxyl, trifluoromethyl or an O-propionic acid methyl ester group, R.sub.5 is methyl, ethyl, propyl, chloromethyl, dichloromethyl, trichloromethyl, methoxymethyl, phenyl, nitro-substituted phenyl, alkyl-substituted phenyl or .alpha.-2,4-dichlorophenoxyethyl, R.sub.6 and R.sub.7 are hydrogen, alkyl, alkoxyalkyl, dihalophenyl, cyclohexyl or methoxy, R.sub.8, R.sub.9 and R.sub.10 are methyl, ethyl, n-propyl or n-butyl, R.sub.11 and R.sub.12 are methoxy, ethoxy, thiomethyl, thioethyl, thio-n-propyl, N,N-dimethylamino or N,N-diethylamino, R.sub.13 is methyl, ethyl, phenyl or trifluoromethyl, R.sub.14 and R.sub.15 are hydrogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, n-hexyl, n-heptyl, methoxy, ethoxy or isopropoxy, and m is 2 or 3; and herbicides containing these compounds.
Abstract:
This invention concerns novel (4-substituted-2-phenylcyclohexyl)alkenoic and alkanoic acid derivatives of the formula I wherein one of Ra and Rb is hydrogen, hydroxy, (1-6C)alkyl, (1-6C)alkoxy, (3-6C)alkenyloxy or phenyl(1-4C)alkoxy and the other of Ra and Rb is hydrogen, (1-6C)alkyl, (1-6C)alkoxy or (3-6C)alkenyloxy; or Ra and Rb together form a (2-4C)alkylenedioxy or oxo group; benzene ring X optionally bears a substituent selected from halogeno, (1-6C)alkyl, (1-6C)alkoxy, hydroxy, (2-6C)alkanoyloxy, (1-6C)alkanoylamino, trifluoromethyl and nitro; n is 3-5; Y is ethylene or vinylene; and in the cyclohexane ring, the substituents at positions 1 and 2 have cis- or trans-relative stereochemistry; and the pharmaceutically acceptable salts, (1-6C)alkyl esters and (1-6C)alkanesulphonamides thereof. The compounds of formula I possess valuable pharmacological properties of use in medicines. The invention also concerns processes for the manufacture of, and pharmaceutical compositions containing a novel compound of formula I.
Abstract:
4,4'-dinitrodibenzyls are prepared by reaction of 4-nitrotoluenes, in the presence of an organic solvent and/or diluent, with an alkali metal-alcoholate and/or an alkaline earth metal alcoholate, and subsequent treatment of the reaction mixture with an aqueous solution of hypohalous acids and/or their salts or with chlorine, bromine or an aqueous solution of hydrogen peroxide and/or its salts, or with organic or inorganic peracids and/or their salts.
Abstract:
Stilbene derivatives of the formula ##STR1## where R.sup.1 and R.sup.2 independently of one another are each C.sub.1 -C.sub.8 -alkyl, X is hydrogen, halogen, C.sub.1 -C.sub.4 -alkoxy, trifluoromethyl, cyano or nitro, Y is hydrogen, alkyl, haloalkyl, alkoxyalkyl, cycloalkyl, aralkyl, aryl, aryloxy, halogen, an unsubstituted or substituted C.sub.4 H.sub.4 chain which is fused to the benzene radical, alkoxy, haloalkoxy, NO.sub.2, alkylthio, thiocyanato, cyano, aralkyloxy, aryloxymethyl, ##STR2## and R' and R" independently of one another are each hydrogen, alkyl, alkoxy, alkylthio or cycloalkyl or are each phenyl which is unsubstituted or substituted by alkyl, halogen or alkoxy, and n is from 1 to 4, and fungicides containing these compounds.
Abstract:
Method for preparing bibenzyl systems with nitro groups as substituents. Toluene derivates with nitro groups are coupled oxidatively in methanolic alkali solution under influence of metal catalysts. The oxidation is preferably done with air. As catalysts metal acetonylacetonates are used. The metal can be Ni, Cu, Co, Mn, Cr or Ti. This catalyst can be used together with a crown ether. Another suitable catalyst is a metal tetraphenylporphin of porfyrin type where the metal can be Ni, vanadium (V=O) or Fe(FeIII).
Abstract:
The present invention is concerned with the therapeutic composition comprising as an active ingredient a compound of the formula:(R.sub.1)(R.sub.2)Ar--Z--M--Ar.sub.1 (R.sub.3)(R.sub.4) Iand salts thereof;whereinAr and Ar.sub.1 are independently phenyl, naphthyl or a nitrogen, oxygen, or sulfur heterocyclic ring;Z is an alkylene chain containing from 1 to 5 carbon atoms in the principal chain and up to a total of 10 carbon atoms;M is oxygen, sulfur, or NR.sub.5 ;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently H, lower alkyl, lower alkoxy, hydroxy, halo, trihalomethyl, hydroxy lower alkyl, carboxy, formyl, aryl, aryloxy, benzyloxy, lower alkanoyl, carboxy lower alkoxy, nitro, amino, lower alkylamino, dilower alkylamino, cyano, lower alkanoyloxy, carbamoyl, lower alkoxy-alkoxy, carbo-lower-alkoxy-alkoxy, or tetrahydropyranylmethyl; andR.sub.5 is hydrogen or lower alkyl.
Abstract:
An adsorptive separation process for separating ortho-nitrotoluene from a feed mixture comprising the ortho-isomer and at least one other isomer of nitrotoluene. The process comprises contacting the feed mixture with an adsorbent comprising a type X zeolite, containing at the exchangeable cationic sites cations of metals from Group IA or IIA of the Periodic Table of Elements, selectively adsorbing substantially all of the ortho-nitrotoluene to the substantial exclusion of the remaining isomers, removing the non-adsorbed portion of the feed mixture from contact with the adsorbent, and thereafter recovering high-purity ortho-isomer by desorption with nitrobenzene.
Abstract:
New hydroquinone ether compounds of formula I are described: ##STR1## wherein p is 1 or 2 and Q is 0 or 1, provided that p+q is 1 or 2, R is a residue of formula II ##STR2## and R.sub.o, R.sub.oo, R.sub.1, R.sub.2, R.sub.3, Q, n and k are as defined in the specification,The new compounds are useful e.g. as stabilizers in photographic material.