Patent classifications
B01J31/2447
Method for producing endo-9-azabicyclo[3.3.1]nonan-3-ol derivative
A 9-azabicyclo[3.3.1]nonan-3-one derivative is reacted with a hydrogen in the presence of a catalyst composed of a ruthenium complex to obtain, at a low cost, an endo-9-azabicyclo[3.3.1]nonan-3-ol derivative useful as a production intermediate for agrochemical agents or medicines.
PHENANTHROLINE BASED PINCER COMPLEXES USEFUL AS CATALYSTS FOR THE PREPARATION OF METHANOL FROM CARBONDIOXIDE
The present invention relates to a novel phenonthroline based pincer complexes and process for preparation thereof. The present invention also provides a one pot process for the conversion of carbon dioxide to methanol in the presence of a molecularly defined pincer-type single-site Ru-catalyst and secondary amine. Further the present invention provides the use of phenonthroline based pincer complexes for the esterification of alcohols and hydrogenation of esters under mild conditions.
CHIRAL LIGAND-BASED METAL-ORGANIC FRAMEWORKS FOR BROAD-SCOPE ASYMMETRIC CATALYSIS
Metal-organic framework (MOFs) compositions based on chiral phosphine-, chiral oxazoline-, chiral pyridine-, and chiral diene-derived organic bridging ligands were synthesized and then post-synthetically metalated with metal precursors such as Ru and Rh complexes. The metal complexes could also be directly incorporated into the MOFs. The MOFs provide a versatile family of recyclable and reusable single-site solid catalysts for catalyzing a variety of asymmetric organic transformations, including the addition of arylboronic acids to ,-unsaturated ketones and alkimines, the hydrogenation of substituted alkene and carbonyl compounds, and cyclization reactions. The solid catalysts can also be integrated into a flow reactor or a supercritical fluid reactor.
PALLADIUM PRECATALYST EMBODIMENTS FOR ENANTIOSELECTIVE CHEMICAL REACTIONS AND METHODS OF MAKING AND USING THE SAME
Disclosed herein are embodiments of a chiral Pd(0) precatalyst that exhibits bench-top and/or solution stability against degradation and/or oxidation. Also disclosed are method embodiments for making the Pd(0) precatalyst and methods for using the same in enantioselective chemical reactions, such as carbon-element bond formation.
ENANTIOSELECTIVE HYDROGENATION OF 4-SUBSTITUTED 1,2-DIHYDROQUINOLINES IN PRESENCE OF A CHIRAL IRIDIUM CATALYST
The invention relates to a process for preparing optically active 4-substituted 1,2,3,4-tetrahydroquinolines comprising enantioselective hydrogenation of the corresponding 4-substituted 1,2-dihydroquinolines in presence of a chiral iridium (P,N)-ligand catalyst.
Tri-(adamantyl) phosphines and applications thereof
In one aspect, phosphine compounds comprising three adamantyl moieties (PAd.sub.3) and associated synthetic routes are described herein. Each adamantyl moiety may be the same or different. For example, each adamantyl moiety (Ad) attached to the phosphorus atom can be independently selected from the group consisting of adamantane, diamantane, triamantane and derivatives thereof. Transition metal complexes comprising PAd.sub.3 ligands are also provided for catalytic synthesis including catalytic cross-coupling reactions.
TRI-(ADAMANTYL)PHOSPHINES AND APPLICATIONS THEREOF
In one aspect, phosphine compounds comprising three adamantyl moieties (PAd.sub.3) and associated synthetic routes are described herein. Each adamantyl moiety may be the same or different. For example, each adamantyl moiety (Ad) attached to the phosphorus atom can be independently selected from the group consisting of adamantane, diamantane, triamantane and derivatives thereof. Transition metal complexes comprising PAd.sub.3 ligands are also provided for catalytic synthesis including catalytic cross-coupling reactions.