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Rhodium-catalyzed asymmetric anti-Markovnikov hydroformylation of α-substituted acrylates/acrylamides has been developed. By employing the Rh/(,)-DTBM-YanPhos complex, a series of β-chiral linear aldehydes were obtained in high yields (up to 94% yield) and high enantioselectivities (up to 96% ee). The utility of this methodology is demonstrated by a gram-scale reaction and a concise synthetic route to chiral γ-butyrolactone.
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Name: Organic letters
A highly enantioselective rhodium-catalyzed allylic dearomatization of β-naphthols with racemic aryl vinyl carbinol is described. In the presence of a Rh-catalyst derived from [Rh(CH)Cl] and chiral (...
An efficient rhodium-catalyzed enantioselective arylation of isatin-derived -Boc ketimines with arylboroxines has been developed using H-BINOL-derived phosphite-olefin as a chiral ligand. This method ...
Density functional theory (DFT) calculations were performed to investigate the photosensitizer-free visible-light-mediated gold-catalyzed cis-difunctionalization of alkynes with aryl diazonium salts. ...
Enantioselective Ir-catalyzed allylic alkylations of CF3S-substituted functionalized methylene derivatives are established under the mild conditions. This method provides the CF3S-containing branched ...
The Markovnikov hydrocyanation of α-substituted styrenes enables the synthesis of tertiary benzylic nitriles under nickel catalysis. The Lewis-acid-free transformation features an unprecedented funct...
The primary purpose of this study is to compare pain after uterine artery embolization using non-spherical polyvinyl alcohol particles or tris-acryl gelatin microsphere in patients with sy...
The anti-factor Xa (anti-Xa) assay is a functional assay that facilitates the measurement of antithrombin (AT)-catalyzed inhibition of factor Xa by unfractionated heparin (UFH) and direct ...
The primary aim of this trial is to estimate the duration of hepatic progression-free survival (HPFS) in participants treated with bland embolization (BE), transcatheter arterial Lipiodol ...
In this study , safety and efficacy of superior rectal artery embolization with embospheres will be researched prospectively.
Acute kidney injury is a common complication of severe Plasmodium knowlesi malaria, and an important contributor to mortality. The exact pathogenic mechanisms of AKI in knowlesi malaria a...
Rhodium. A hard and rare metal of the platinum group, atomic number 45, atomic weight 102.905, symbol Rh. (Dorland, 28th ed)
2-Hydroxy-N-phenylbenzamides. N-phenyl substituted salicylamides. Derivatives have been used as fungicides, anti-mildew agents and topical antifungal agents. In concentrated form may cause irritation of skin and mucous membranes.
AMINO ACIDS composed of GLYCINE substituted at the nitrogen rather than the usual carbon position, resulting in the loss of HYDROGEN BONDING donors. Polymers of these compounds are called PEPTOIDS.
A class of enzymes that transfers substituted phosphate groups. EC 2.7.8.
Acridines which are substituted in any position by one or more amino groups or substituted amino groups.