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6017426 |
Process for the preparation of ceramide-type compounds
A process for the preparation of ceramide-type compounds by reacting, an amino alcohol with a carboxylic acid of defined structures, where the reaction is conducted with irradiation with microwaves...
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5143589 |
Perfluoropolyethers containing a halogen different from fluorine and having an acid end group
Perfluoropolyethers having an acid end group of the type of acyl fluoride (or chloride) or a carboxylic group or derivatives thereof, the other end group being a perfluoroalkyl containing one or...
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5141627 |
Chelators whose affinity for calcium ion is increased by illumination
The present invention relates to a group of organic chelators whose affinity for calcium ion in solution is increased by electromagnetic radiation. Specifically, the chelators are related to BAPTA...
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5120412 |
Preparation of hypericin
A process for preparing hypericin comprises oxidative dimerization of emodin anthrone and conversion of the intermediate protohypericin to hypericin by irradiation with visible light.
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4996069 |
Process for the preparation of flavor and fragrance materials
The invention relates to a process for the preparation of flavor and fragrance materials by oxidizing a solution of carotene in an aprotic solvent under the influence of ultra-violet light. The...
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4921928 |
Piezoelectric polymer materials from epoxy resins and polytetramethyleneoxide-di-p-aminobenzoate
A piezoelectric polymer material comprising a cured product of a composition comprised of an epoxy resin having at least two epoxy groups in the molecules, a compound having a molecular weight not...
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4906343 |
Process for the photochemical production of α-aryl propionic acid
The invention resides in a novel photochemical process for the production of α-aryl propionic acids by the subjection of a solution in an organic solvent of the corresponding α-haloaryl alkyl...
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4904417 |
Fluorine-containing polyether and process for preparing the same
A fluorine-containing polyether of the formula: A--X--A' wherein A and A' are the same or different and are each --COF, --COCl or --COOH, and X is --CF 2 CF 2 --R f --O--C m F 2m --O--R f ...
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4898655 |
Method for racemization of optically active chrysanthemic acid or its derivatives
Optically active chrysanthemic acid or its derivatives of the formula ##STR1## (wherein X represents a hydroxyl group, a halogen atom, a C 1 -20 alkoxy group or a...
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4849076 |
Continuous oxidation method
A method for oxidizing a substrate which is oxidizable by singlet oxygen is discolded. The first step of the method comprises establishing a flow to and from each of a plurality of successive...
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4837364 |
Processes for preparing pentafluoroethoxy- and pentafluoroethylthiobenzene drivatives
A process for the preparation of (pentafluoroethoxy)- and (pentafluoroethylthio)benzene derivatives either from phenol, thiophenol or from halobenzene. A halobenzene is reacted with...
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4749726 |
Internal stabilization of polycarbonate resins by two stage radiation process
A new polycarbonate copolymer resin is formed by internal generation of stabilizers bound to the polymer chain. Irradiation of a solid piece or a deoxygenated solution of the resin at a first...
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4556732 |
Pentenoic acid and its preparation
Novel 3-formyl-4-methyl-pent-3-ene-1-oic acid of the formula ##STR1## and a process for its preparation and intermediates and a process for the preparation of compounds of the formula ##STR2##...
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4545872 |
Method for reducing carbon dioxide to provide a product
A process and apparatus for reducing carbon dioxide to at least one useful product includes two redox couple electrolyte solutions separated by a first membrane having photosensitizers. The carbon...
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4466870 |
Organic sonochemistry process
The method of causing or promoting chemical changes involving the step of subjecting reactants to ultrasonic energy as a key treatment step, including methods of: (1) reducing aryl halides by...
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4461687 |
Processes for the preparation of pure enantiomers of bicyclo(2,2,2)oct-5-en-2-ones
New bicyclo[2.2.2]oct-5-en-2-ones of the formulae Ia and Ib in the form of pure enantiomers and processes for preparing them are described. The compounds are used for the preparation of pure...
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4429128 |
Carbapenams and carbapen-2-ems and process therefor
Carbapenam-3-carboxylic acids and carbapen-2-em-3-carboxylic acids substituted at the 1-position with an oxo, a hydroxy or an acetoxy group, variously substituted at the 2-position with such groups...
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4410721 |
Process for the preparation of cyclopropene intermediates
A novel cyclopropene-carboxylate of the formula ##STR1## wherein R is alkyl of 1 to 6 carbon atoms and their preparation and a process using the compounds of formula I to obtain cis compounds of...
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4348264 |
Photocatalyzed process for producing carbapenams and carbapen-2-ems
Carbapenam-3-carboxylic acids and carbapen-2-em-3-carboxylic acids substituted at the 1-position with an oxo, a hydroxy or an acetoxy group, variously substituted at the 2-position with such groups...
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4338170 |
Isomerization of β-γ-unsaturated alcohol or its ester
A cis-trans isomerization of a cis-β-γ-unsaturated alcohol or its ester having the formula ##STR1## wherein R 1 represents hydrogen atom or a C 1 -C 5 alkyl group; X represents hydrogen atom...
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4334969 |
Photochemical process for the synthesis of strobilurin
Process for stereoselective synthesis of strobilurin in the (E) configuration, starting from cinnamaldehyde and 2-oxobutyric acid.
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4299973 |
Alkyl 3,3-dimethyl-2-(2-hydroxy-2-methyl-propyl)-1-cyclopropene-1-carboxylates
A novel cyclopropene-carboxylate of the formula ##STR1## wherein R is alkyl of 1 to 6 carbon atoms and their preparation and a process using the compounds of formula I to obtain cis compounds of...
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4260464 |
Process for the preparation of 17α-(3-iodobenzoyloxy)-9α-chloro-4-pregnene-3,20-diones and their D-homo homologs
Novel 17α-(3-iodobenzoyloxy)-9α-chloro-4-pregnene-3,20-diones and the D-homo homologs thereof, of the formula ##STR1## wherein n is 1 or 2; C 1 -----C 2 represents a C--C single or CC...
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4252729 |
Steroids and process for their manufacture
The present disclosure is concerned with 9α-chloro-17-(m-iodobenzyloxy) steroids and a process for their manufacture. The subject compounds are useful as intermediates in the synthesis of...
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4188273 |
Process for preparing novel thin films
A thin film of less than 300 microns in thickness can be obtained by crosslinking a surfactant with plasma or radiation. This thin film is as high in strength as an ordinary plastic film, and is...
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4152230 |
Photooxidation process
A photochemically initiated oxidation process for organic materials using only catalytic quantities of the photochemical agent by conducting the reaction in the presence of a compound of a variable...
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4123219 |
Chemical storage of radiant energy
A method for the chemical storage of radiant energy in which substituted naphthalenes undergo photochemical dimerization by exposure to radiant energy to form...
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4097678 |
Δ.sup.9 (11) -5α-D-homo-20-keto steroids
3α-Hydroxy and 3α-acyloxy- Δ 9 (11) -5α-D-homo-20-ketopregnenes of the formula ##STR1## wherein R is hydrogen or acyl, R 1 is hydrogen or methyl and R 2 is methyl or ethyl, are produced by...
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4087342 |
Method of simultaneously carrying out plurality of photochemical reactions
A photochemical reaction system is provided in which a single polychromatic light source is used to simultaneously irradiate a plurality of photochemical reactions with different regions of the...
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4039574 |
13-Hydroxy-15-deoxy-prostaglandins
This disclosure describes 13-hydroxy-15-deoxy-prostaglandins which exhibit multiple biological responses even at low doses.
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4013690 |
Organic compounds
This invention provides compounds of formula I, ##STR1## wherein R 1 is alkyl of 1 to 10 carbon atoms, cycloalkyl of 3 to 8 carbon atoms or phenyl, and R 2 is hydrogen or alkyl of 1 to 4...
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3994952 |
Anti-tricyclo[6.4.0.0..sup.2,7 ]1,4,7,10-tetracarboxy-2,5,8,11-tetrahydroxy-dodeca-4,10-diene and esters thereof, a process for their preparation, and their use in preparing linear polyesters
Compounds of formula I ##SPC1## wherein R denotes hydrogen or an aliphatic or aromatic radical. These compounds are prepared by irradiation of succinylsuccinic acid or diesters thereof, in the...
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3963765 |
Preparation of derivatives of cholesterol
Process for the production of hydroxylated derivatives of cholesterol and 7-dehydrocholesterol which comprises subjecting a saturated unsubstituted or substituted derivative of cholestane,...
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3878074 |
Vinylation of aromatic compounds
Aromatic compounds are vinylated by reaction with an ethylenic compound in the presence of certain metallic compounds and an organic solvent, the mixture being photocatalyzed by exposure to the...
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3875193 |
Preparation of hydroxylated steroids
A process for preparing 14β-hydroxy derivatives of saturated steroid compounds which comprises dissolving the starting material in a suitable solvent together with peracetic acid and heating the...
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3871979 |
NEW PHOTOCHEMICAL PROCESS FOR PRODUCING 9-OXYGENATED-11α-HYDROXYMETHYL-15α-HYDROXYPROSTA-5-CIS,13-TR ANS-DIENOIC ACIDS
New process for the production of 8R-antimeric and racemic 9-oxygenated-11α-hydroxymethyl-15α-hydroxyprosta-5-cis,13-
tran s-dienoic acids in which the key step comprises the sensitized...
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3870751 |
SUBSTITUTED PHENYL ACETIC ACIDS
Substituted phenyl acetic acids e.g. p-(1-t-butyl vinyl) phenyl acetic acids are prepared by dehydrating corresponding (p-pivaloyl phenyl) acetic acids and are useful as hypolipidemic agents.
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3849274 |
PROCESS FOR COUPLING ORGANIC MOLECULES
A process for coupling organic molecules involving the step of irradiating an organic compound with ultraviolet light in the presence of hexachlorobenzene, hexabromobenzene or hexaiodobenzene under...
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3767546 |
PRODUCTION OF 16-DEHYDROPREGNENOLONE AND RELATED COMPOUNDS
16-Dehydropregnenolone or 16-dehydroprogesterone is produced by cleavage of the Δ 20 (22) double bond in pseudodiosgenin diacetate or pseudodiosgenone acetate by means of photo-oxidation with...
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3759978 |
5,6-TRANS PGE
5,6-Trans-prostaglandins E 2 , F 2 α, F 2 β, A 2 and B 2 are disclosed. These are useful for the same pharmacological purposes as the known prostaglandins PGE 2 , PGF 2 α, PGF 2 β, PGA 2 ,...
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3696111 |
BENZOCYCLOBUTENE-1-CARBOXYLIC ACIDS
4-Cyclohexyl-or 4-phenylbenzocyclobutene-1-carboxylic acids or derivatives thereof are useful in the treatment of inflammatory diseases in animals, including man. An example of the disclosure is...
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3627812 |
COTELOMERS OF VINYL ESTERS OF LOWER ALKANOIC ACIDS
Cotelomers of vinyl esters of lower alkanoic acids, such as vinyl acetate, wherein the telogen is an alkanol containing up to eight carbon atoms, a lower alkyl ester of a lower alkanoic acid,...
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3624131 |
SUBSTITUTED 4,4'-(DIPHENYLMETHYLENE) DIPHENOLS
Bisphenols are disclosed which have four phenyl groups attached to a central aliphatic carbon atom, at least two and up to four of the phenyl groups having hydroxyl groups in the para position...
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3541080 |
PROCESS FOR PREPARING LACTAM HYDROCHLORIDE AND A FREE BASE THEREOF
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3541082 |
STEROIDAL DELTA**16-20(ALPHA AND BETA)-HYDROPEROXIDE 21-ETHERS
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3541116 |
3,5-DI-SUBSTITUTED FUCHSONES
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3522157 |
PROCESS FOR THE MANUFACTURE OF A-NOR-B-HOMO-STEROIDS
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3519677 |
ANTHRASTEROIDS AND PROCESS FOR THEIR MANUFACTURE
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3514383 |
PROCESS FOR PREPARING PROSTAGLANDINS AND ANALOGS THEREOF
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3509197 |
FLUORO-CONTAINING CYCLOPROPANES
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