Patent classifications
C07C31/135
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.
USE OF AROMATIC ALCOHOL AS STRUCTURAL INDUCER AND METHOD FOR TREATING SILK FIBROIN
The present invention provides use of an aromatic alcohol as a structural inducer for silk fibroin, and also provides a method for treating silk fibroin. The method includes the following steps: bringing silk fibroin into contact with an aromatic alcohol-containing vapor or liquid to induce the structural transformation of silk fibroin, to obtain a water-insoluble silk fibroin, wherein the mechanical performance of the resulting silk fibroin material and the bonding strength between the silk fibroin material and a substrate material are over 50% higher than those of a silk fibroin material obtained by a traditional treatment method (induction with methanol, ethanol, and steam).
Sandalwood-Type Fragrance Compounds
The present invention relates to novel fragrance compounds derived from campholenic aldehyde according to general Formula (II) or from the cyclopropanated campholenic aldehyde according to general Formula (III), or to compositions comprising one or more such fragrance compounds. The invention also relates to methods for preparing these compounds and to particular intermediates which are used in the preparation processes according to the present invention. It also pertains to a method for producing, enhancing or modifying a sandalwood odor in a formulation. The invention also relates to the use of such compounds or fragrance compositions comprising one or more compounds according to the invention as an odorant or for improving the fixation of a fragrance compound or a composition comprising a fragrance compound or for preparing perfumed products. Finally, the invention relates to corresponding perfumed products.
Sandalwood-Type Fragrance Compounds
The present invention relates to novel fragrance compounds derived from campholenic aldehyde according to general Formula (II) or from the cyclopropanated campholenic aldehyde according to general Formula (III), or to compositions comprising one or more such fragrance compounds. The invention also relates to methods for preparing these compounds and to particular intermediates which are used in the preparation processes according to the present invention. It also pertains to a method for producing, enhancing or modifying a sandalwood odor in a formulation. The invention also relates to the use of such compounds or fragrance compositions comprising one or more compounds according to the invention as an odorant or for improving the fixation of a fragrance compound or a composition comprising a fragrance compound or for preparing perfumed products. Finally, the invention relates to corresponding perfumed products.
ALICYCLIC ALCOHOL, ALICYCLIC ALCOHOL COMPOSITION, AND PERFUME COMPOSITION
An alicyclic alcohol of Formula (1) and a fragrance composition including the same is described. An alicyclic alcohol composition containing an alicyclic alcohol of Formula (1) and an alicyclic alcohol of Formula (2), is also described, and this composition may also include an alicyclic alcohol of Formula (3). The alicyclic alcohol composition may comprise Formula (1) at a content of 85 mass % to 98 mass %.
##STR00001##
Chiral metal complex compounds
The invention comprises novel chiral metal complex compounds of the formula ##STR00001## wherein M, PR.sup.2, R.sup.3 and R.sup.4 are outlined in the description, its stereoisomers, in the form as a neutral complex or a complex cation with a suitable counter ion. The chiral metal complex compounds can be used in asymmetric reactions, particularly in asymmetric reductions of ketones, imines or oximes.
Chiral metal complex compounds
The invention comprises novel chiral metal complex compounds of the formula ##STR00001## wherein M, PR.sup.2, R.sup.3 and R.sup.4 are outlined in the description, its stereoisomers, in the form as a neutral complex or a complex cation with a suitable counter ion. The chiral metal complex compounds can be used in asymmetric reactions, particularly in asymmetric reductions of ketones, imines or oximes.
CHIRAL METAL COMPLEX COMPOUNDS
The invention comprises novel chiral metal complex compounds of the formula
##STR00001##
wherein M, PR.sup.2, R.sup.3 and R.sup.4 are outlined in the description, its stereoisomers, in the form as a neutral complex or a complex cation with a suitable counter ion. The chiral metal complex compounds can be used in asymmetric reactions, particularly in asymmetric reductions of ketones, imines or oximes.
CHIRAL METAL COMPLEX COMPOUNDS
The invention comprises novel chiral metal complex compounds of the formula
##STR00001##
wherein M, PR.sup.2, R.sup.3 and R.sup.4 are outlined in the description, its stereoisomers, in the form as a neutral complex or a complex cation with a suitable counter ion. The chiral metal complex compounds can be used in asymmetric reactions, particularly in asymmetric reductions of ketones, imines or oximes.
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.