Abstract: The present invention relates to processes for preparing precursors of picenadol, (.+-.)3-(1,3.alpha.-dimethyl-4.alpha.-propyl-4.beta.-piperdinyl)phenol, hydrochloride, a known analgesic. Certain of the compounds prepared by the present process are novel as well.
Abstract: A novel process for the manufacture of quinone derivatives which are suitable as intermediates for the manufacture of (2RS,4'R,8'R)-tocopherol is described. In this process a quinone of the formula ##STR1## is reacted with a phytyl derivative of the formula ##STR2## If desired, the thus-obtained compound of the formula ##STR3## is subsequently converted into the compound of the formula ##STR4## and, if desired, this compound is converted into the compound of the formula ##STR5## The compound of formula V is known and can be converted into (2RS,4'R,8'R)-tocopherol in a known manner.
Abstract: Carbonate compounds are prepared by equilibrium interchange of carbonate functionality between lower alkyl carbonates especially dimethyl carbonate and alkyl halides such as allyl chloride at about 50.degree. C. to about 250.degree. C. in the presence of an initiator such as homogeneous or heterogeneous amines, phosphines, and ammonium or phosphonium quaternary salts.
Abstract: Antimicrobial activity is exhibited by compounds having the formula ##STR1## wherein R.sub.1 is hydrogen or aryl;R.sub.2 is hydroxymethyl, carboxyaldehyde, propenalyl, 3-hydroxy-1-propenyl, or 3-hydroxy-1,2-epoxypropyl; andn is 2 and m is 1 or n is 3 and m is 0; with the proviso that if R.sub.1 is hydrogen, n is 2 and m is 1.
Abstract: The epoxidation of terminally and/or internally olefinically unsaturated hydrocarbon compounds which are liquid at 50.degree. to 100.degree. C. and at atmospheric pressure (oil phase), in which the oil phase is treated with an acid phase containing acetic acid, hydrogen peroxide and peracetic acid in aqueous solution, after which the aqueous acid phase is separated from the oil phase, the peracetic acid in the aqueous acid phase is regenerated and the regenerated aqueous acid phase is returned to the epoxidation reactor. Epoxidation is carried out using an aqueous acid phase containing at most about 10% by weight of peracetic acid, and the peracetic acid content in the aqueous acid phase is reduced by at most about 50%, based on the peracetic acid content of the aqueous acid phase used, after a single passage through the epoxidation stage. After separation from the oil phase, the aqueous acid phase preferably is cooled before regeneration.
Type:
Grant
Filed:
December 26, 1985
Date of Patent:
March 3, 1987
Assignee:
Henkel Kommanditgesellschaft auf Aktien
Inventors:
Klemens Eckwert, Lutz Jeromin, Alfred Meffert, Eberhard Peukert, Bernhard Gutsche
Abstract: A novel process for the manufacture of quinone derivatives which are suitable as intermediates for the manufacture of (2RS,4'R,8'R)-tocopherol is described.
Abstract: This invention provides certain 4-acylamino benzamide derivatives, their pharmaceutical formulations, and their use as anticonvulsant agents.
Abstract: Disclosed is an improved process for synthesizing periplanone-B, the sex attractant and sex excitant pheromone of the American cockroach, Periplaneta americana.
Abstract: Lactones are produced by reacting an unsaturated alcohol capable of intramolecular esterification to form a lactone ring with carbon monoxide in the presence of a protonic acid and a catalyst comprising (a) at least one of the metals palladium, rhodium, ruthenium, iridium and cobalt, and (b) at least one of the metals copper, molybdenum and iron, the metals (a) and (b) being in the form of either the elemental metal or a compound thereof.
Abstract: A process for producing epichlorohydrin comprising the steps of:(a) reacting allyl alcohol with chlorine at a temperature of -30.degree. C. to 20.degree. C. under a pressure of 0 to 10 atm (gauge) in an aqueous hydrogen chloride solution containing more than 45% but not more than 70% by weight of hydrogen chloride to form 2,3-dichloro-1-propanol;(b) separating at least a portion of the hydrogen chloride by heating the reaction mixture obtained at step (a) to recover the hydrogen chloride in the form of gas;(c) recycling the hydrogen chloride recovered at step (b) to step (a);(d) separating the resultant liquid mixture after recovering at least the portion of the hydrogen chloride at step (b) into an aqueous phase and an oil phase by cooling the resultant liquid mixture to a temperature of 40.degree. C.
Abstract: A process for the preparation of an oxirane of the formula ##STR1## in which Y represents chlorine or phenyl, X represents oxygen or Ch.sub.2 and Z represents hydrogen or halogen, which comprises containing dimethyl sulphoxide with dimethyl sulphate whereby to form trimethyloxosulphonium methyl sulphate of the formula(CH.sub.3).sub.3 SO.sup..sym. CH.sub.3 SO.sub.4.sup.63 (II)and thereafter, without isolating said trimethyloxosulphonium methyl sulphate, contacting the same with a ketone of the formula ##STR2## in which X, Y and Z have the meanings indicated above, in the presence of a base and in the presence of an inert organic diluent, at a temperature between 0.degree. C. and 60.degree. C.
Type:
Grant
Filed:
October 22, 1985
Date of Patent:
December 30, 1986
Assignee:
Bayer Aktiengesellschaft
Inventors:
Rudolf Zerbes, Siegfried W. Linke, Karl H. Mohrmann, Wolf Reiser
Abstract: Novel substituted oxirane compounds of the formula ##STR1## wherein R is halogen or --CF.sub.3 ; n is an integer from 0 to 5; and X.sub.1, X.sub.2, X.sub.3, X.sub.4 and X.sub.5 are halogen, and are useful as herbicidal compounds.
Abstract: Compounds which possess antiallergy activity have the formula: ##STR1## wherein R is selected from phenyl and phenyl mono or disubstituted with lower alkyl, nitro, halogenated methyl, halogen, lower alkoxy and combinations thereof;wherein R.sup.1 is selected from hydrogen and lower alkyl; andwhere R.sup.2 is selected from phenyl, phenyl monosubstituted with lower alkyl, nitro, halogenated methyl, halogen, and lower alkoxy, and trans-phenylcyclopropyl in which the phenyl group may be substituted with lower alkyl or halogen.
Abstract: Certain novel 1-(substituted-alkyl)-3-(3-hydroxyphenyl)piperidine compounds, and the pharmeceutically-acceptable acid-addition salts thereof, possess pharmaceutical activity as neuroleptic agents, and they are useful for treating psychotic disorders, e.g. schizophrenia, in human subjects. In particular, they are useful for alleviating such symptoms as anxiety, agitation, excessive aggression, tension and social or emotional withdrawal in psychotic patients.Certain 3-(3-methoxyphenyl)piperidine compounds are useful as chemical intermediates to the aforementioned neuroleptic agents.
Abstract: Metal complexes are obtained by reacting furfurylamine with a metal carbonyl selected from the group consisting of tungsten carbonyl, molybdenum carbonyl and chromium carbonyl. Multi-cycle reimpregnation resins are obtained by reacting one of these metal complexes with furfuryl alcohol.
Abstract: Compounds of formula I ##STR1## are described which are useful to inhibit the formation of serum cholesterol by virtue of their ability to inhibit .beta.-hydroxy-.beta.-methylglutaryl-CoA(HMG CoA), the rate-controlling substance in the synthesis of serum cholesterol.
Type:
Grant
Filed:
March 11, 1985
Date of Patent:
November 11, 1986
Assignee:
G. D. Searle & Co.
Inventors:
John S. Baran, Thomas J. Lindberg, Harman S. Lowrie
Abstract: Compounds of the formula ##STR1## and their preparation wherein R.sup.1 and R.sup.2 are each selected from H and alkyl wherein the alkyl moieties are straight or branched chain of 1-20 carbons, preferably 1-6 carbons. Readily prepared therefrom are the corresponding unsaturated esters of the formula R.sup.2 S(R.sup.1)CH--CH.sub.2 --CH.dbd.CH--COO-alkyl which are useful as intermediates in the preparation of herbicides.
Abstract: The novel compounds of the formula ##STR1## wherein R.sup.1 is hydrogen, a residue readily removable by reduction, lower 1-hydroxyalkyl or lower alkanoyl andR.sup.2 is hydrogen, or each of R.sup.1 and R.sup.2 is a residue readily removable by reduction;R.sup.3 is hydrogen or lower alkyl;R.sup.4 is hydrogen or a readily removable protecting group; andA is lower alkylidene or (C.sub.5-7)-cycloalkylidene,are valuable intermediates for the manufacture of antimicrobially-active .beta.-lactams.