Patent classifications
C07C13/20
CHROMIUM-CATALYZED PRODUCTION OF ALCOHOLS FROM HYDROCARBONS IN THE PRESENCE OF OXYGEN
Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed in which the hydrocarbon reactant and either a supported chromium (VI) catalyst or a supported chromium (II) catalyst are contacted, optionally with UV-visible light irradiation, followed by exposure to an oxidizing atmosphere and then hydrolysis to form a reaction product containing the alcohol compound and/or the carbonyl compound. The presence of oxygen significant increases the amount of alcohol/carbonyl product formed, as well as the formation of oxygenated dimers and trimers of certain hydrocarbon reactants.
CHROMIUM-CATALYZED PRODUCTION OF ALCOHOLS FROM HYDROCARBONS IN THE PRESENCE OF OXYGEN
Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed in which the hydrocarbon reactant and either a supported chromium (VI) catalyst or a supported chromium (II) catalyst are contacted, optionally with UV-visible light irradiation, followed by exposure to an oxidizing atmosphere and then hydrolysis to form a reaction product containing the alcohol compound and/or the carbonyl compound. The presence of oxygen significant increases the amount of alcohol/carbonyl product formed, as well as the formation of oxygenated dimers and trimers of certain hydrocarbon reactants.
Green Odorant
Described herein is a method of using, as a perfuming ingredients, a composition of matter including a compound of formula (I) and a compound of formula (II), which are useful perfuming ingredients of the green, floral/rosy type. Also described herein are a perfuming composition and a perfuming consumer product including same.
Green Odorant
Described herein is a method of using, as a perfuming ingredients, a composition of matter including a compound of formula (I) and a compound of formula (II), which are useful perfuming ingredients of the green, floral/rosy type. Also described herein are a perfuming composition and a perfuming consumer product including same.
Dihydronaphthalene derivative
A compound represented by general formula (I) wherein all the symbols are as defined in the specification has a selective S1P5 receptor agonist activity due to having a linker from a phenyl group to a cyclic substituent in a dihydronaphthalene skeleton; i.e., due to having a short linker of one atom or less as L in general formula (I), and can therefore serve as an agent for treating S1P5-mediated disease, e. g., neurodegenerative disease such as schizophrenia. ##STR00001##
Dihydronaphthalene derivative
A compound represented by general formula (I) wherein all the symbols are as defined in the specification has a selective S1P5 receptor agonist activity due to having a linker from a phenyl group to a cyclic substituent in a dihydronaphthalene skeleton; i.e., due to having a short linker of one atom or less as L in general formula (I), and can therefore serve as an agent for treating S1P5-mediated disease, e. g., neurodegenerative disease such as schizophrenia. ##STR00001##
COMPOSITIONS AND METHODS FOR PREPARING REGIO- AND STEREOSELECTIVE ALICYCLIC ALKENE ISOTOPOLOGUES AND STEREOISOTOPOMERS
A method for preparing isotopologues and/or stereoisotopomers of cyclic and heterocyclic alkenes and dienes is described. The method provides regio- and/or stereospecific addition of hydrogen, deuterium, tritium and a variety of other substituents to arenes, heteroarenes, and alicyclic compounds that have multiple carbon-carbon double bonds, thereby providing discrete isotopologues and stereoisotopomers of cyclic and heterocyclic alkenes and dienes with high isotopic purity and in high enantiomeric excess. Also described are isotopologues and stereoisotopomers of cyclic and heterocyclic alkenes and dienes, such as isotopologues and stereoisotopomers of cyclohexene and tetrahydropyridine, as well as products thereof, such as isotopologues and stereoisotopomers of piperidines and piperidine-containing compounds, such as methylphenidate. In addition, a method of determining the absolute configuration of stereoisotopomers of cyclohexenes is described.
COMPOSITIONS AND METHODS FOR PREPARING REGIO- AND STEREOSELECTIVE ALICYCLIC ALKENE ISOTOPOLOGUES AND STEREOISOTOPOMERS
A method for preparing isotopologues and/or stereoisotopomers of cyclic and heterocyclic alkenes and dienes is described. The method provides regio- and/or stereospecific addition of hydrogen, deuterium, tritium and a variety of other substituents to arenes, heteroarenes, and alicyclic compounds that have multiple carbon-carbon double bonds, thereby providing discrete isotopologues and stereoisotopomers of cyclic and heterocyclic alkenes and dienes with high isotopic purity and in high enantiomeric excess. Also described are isotopologues and stereoisotopomers of cyclic and heterocyclic alkenes and dienes, such as isotopologues and stereoisotopomers of cyclohexene and tetrahydropyridine, as well as products thereof, such as isotopologues and stereoisotopomers of piperidines and piperidine-containing compounds, such as methylphenidate. In addition, a method of determining the absolute configuration of stereoisotopomers of cyclohexenes is described.
Methods of Hydromethylation of Alkenes and Ketones
Methods of hydromethylation of alkenes and ketones, including methods that use Tebbe's reagent. The methods may include contacting Cp.sub.2Ti(μ-Cl)(μ-CH.sub.2)AlMe.sub.2 and an alkene or a ketone to produce an intermediate product that may include a titanacyclobutane. The intermediate product may be contacted with an acid to produce a methylated product.
Methods of Hydromethylation of Alkenes and Ketones
Methods of hydromethylation of alkenes and ketones, including methods that use Tebbe's reagent. The methods may include contacting Cp.sub.2Ti(μ-Cl)(μ-CH.sub.2)AlMe.sub.2 and an alkene or a ketone to produce an intermediate product that may include a titanacyclobutane. The intermediate product may be contacted with an acid to produce a methylated product.