Patent classifications
C07C41/26
Catalysts and processes for the hydrogenation of amides
There is provided a process for the reduction of one or more amide moieties in a compound comprising contacting the compound with hydrogen gas and a transition metal catalyst in the presence or absence of a base under conditions for the reduction an amide bond. The presently described processes can be performed at low catalyst loading using relatively mild temperature and pressures, and optionally, in the presence or absence of a base or high catalyst loadings using low temperatures and pressures and high loadings of base to effect dynamic kinetic resolution of achiral amides.
NEW PROCESS FOR PREPARING BIPHENYL COMPOUNDS
The present invention relates to a process for preparing a compound having the formula (I), said process comprising the following steps: a) the addition of an oxygen source into a solution of a compound of formula (II), in a water-miscible solvent, b) the addition of a laccase in the solution obtained after step a); and c) the possible recovering of the compound of formula (I) thus obtained.
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NEW PROCESS FOR PREPARING BIPHENYL COMPOUNDS
The present invention relates to a process for preparing a compound having the formula (I), said process comprising the following steps: a) the addition of an oxygen source into a solution of a compound of formula (II), in a water-miscible solvent, b) the addition of a laccase in the solution obtained after step a); and c) the possible recovering of the compound of formula (I) thus obtained.
##STR00001##
NEW PROCESS FOR PREPARING BIPHENYL COMPOUNDS
The present invention relates to a process for preparing a compound having the formula (I), said process comprising the following steps: a) the addition of an oxygen source into a solution of a compound of formula (II), in a water-miscible solvent, b) the addition of a laccase in the solution obtained after step a); and c) the possible recovering of the compound of formula (I) thus obtained.
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FLUORINATED TENSIDES
The present invention relates to novel compounds containing fluorinated end groups, to the use thereof as surface-active substances, and to compositions comprising these compounds.
FLUORINATED TENSIDES
The present invention relates to novel compounds containing fluorinated end groups, to the use thereof as surface-active substances, and to compositions comprising these compounds.
Low-viscosity concentrated solutions of alkaline earth metal alkoxides in aprotic solvents and processes for preparation thereof
A solution of a mixed alkaline earth alkoxide compound with an aluminum compound in an aprotic solvent, and methods of making and using them.
Low-viscosity concentrated solutions of alkaline earth metal alkoxides in aprotic solvents and processes for preparation thereof
A solution of a mixed alkaline earth alkoxide compound with an aluminum compound in an aprotic solvent, and methods of making and using them.
Low-viscosity concentrated solutions of alkaline earth metal alkoxides in aprotic solvents and processes for preparation thereof
A solution of a mixed alkaline earth alkoxide compound with an aluminum compound in an aprotic solvent, and methods of making and using them.
A Process for Preparation of Bioavailable White Curcumin - A Unique Blend of Hydrogenated Curcuminoids
The present invention discloses a process for preparation of white curcumin from purified curcuminoids. The curcuminoids are obtained by solvent extraction and crystallization of dried turmeric powder. The autoclave is charged with ethyl acetate and the 95% purity curcuminoids mixture is added to and stirred for uniformity at room temperature. 5% (w/w) of 10% palladium carbon is added to the reaction mixture and allowed for hydrogenation in the presence of hydrogen gas at 2 lbps pressure and stirred continuously for 15 hours. Once the reaction is completed, the reaction mixture is filtered and washed with ethyl acetate. The ethyl acetate is distilled off and crude mass is stirred with water to obtain a solid precipitate. Finally, the solid obtained is filtered and dried to pale brown crystals of white curcumin. White curcumin is encapsulated with beta-cyclodextrin, which exhibited increased bioavailability. White curcumin also exhibited anti-oxidant and chemopreventive activities.