Search Results - "Ellman, Jonathan A"

Cobalt(III)-Catalyzed Synthesis of Indazoles and Furans by C–H Bond Functionalization/Addition/Cyclization Cascades by Hummel, Joshua R, Ellman, Jonathan A

“…The development of operationally straightforward and cost-effective routes for the assembly of heterocycles from simple inputs is important for many scientific…”
Get full text

Synthesis and Applications of tert-Butanesulfinamide by Robak, MaryAnn T, Herbage, Melissa A, Ellman, Jonathan A

“…The chemical properties and applications of tert-butanesulinamide and other sulfinamides are examined. The addition of metalloenamies to azocarboxylates is…”
Get full text

Rhodium Catalyzed Chelation-Assisted C–H Bond Functionalization Reactions by Colby, Denise A, Tsai, Andy S, Bergman, Robert G, Ellman, Jonathan A

“…Over the last several decades, researchers have achieved remarkable progress in the field of organometallic chemistry. The development of metal-catalyzed…”
Get full text

Stereospecific Synthesis of Unprotected, α,β-Disubstituted Tryptamines and Phenethylamines from 1,2-Disubstituted Alkenes via a One-Pot Reaction Sequence by Chu, Duc, Ellman, Jonathan A.

“…Unprotected, α,β-disubstituted tryptamines and phenethylamines are obtained by a one-pot, metal-free sequence that proceeds by the in situ formation of…”
Get full text

Highly Stereoselective Cobalt(III)-Catalyzed Three-Component C−H Bond Addition Cascade by Boerth, Jeffrey A., Hummel, Joshua R., Ellman, Jonathan A.

“…A highly stereoselective three‐component C(sp2)−H bond addition across alkene and polarized π‐bonds is reported for which CoIII catalysis was shown to be much…”
Get full text

Rhodium-Catalyzed C−C Bond Formation via Heteroatom-Directed C−H Bond Activation by Colby, Denise A, Bergman, Robert G, Ellman, Jonathan A

“…A study of methods using rhodium catalysts to create carbon-carbon bonds is presented. Some hydrocarbons present low-cost alternatives as source material for…”
Get full text

Catalytic Enantioselective Sulfur Alkylation of Sulfenamides for the Asymmetric Synthesis of Sulfoximines by Greenwood, Nathaniel S., Champlin, Andrew T., Ellman, Jonathan A.

“…Sulfoximines are increasingly incorporated in agrochemicals and pharmaceuticals, with the two enantiomers of chiral sulfoximines often having profoundly…”
Get full text

Three-Component Coupling of Aldehydes, Aminopyrazoles, and Sulfoxonium Ylides via Rhodium(III)-Catalyzed Imidoyl C–H Activation: Synthesis of Pyrazolo[1,5‑a]pyrimidines by Hoang, Gia L, Streit, Andrew D, Ellman, Jonathan A

“…An efficient, three-component strategy for Rh­(III)-catalyzed annulation of readily available 3-aminopyrazoles, aldehydes, and sulfoxonium ylides to give…”
Get full text

Rhodium(III)-Catalyzed Indazole Synthesis by C–H Bond Functionalization and Cyclative Capture by Lian, Yajing, Bergman, Robert G, Lavis, Luke D, Ellman, Jonathan A

“…An efficient, one-step, and highly functional group-compatible synthesis of substituted N-aryl-2H-indazoles is reported via the rhodium­(III)-catalyzed C–H…”
Get full text

Rh(III)-Catalyzed Diastereoselective C-H Bond Addition/Cyclization Cascade of Enone Tethered Aldehydes by Boerth, Jeffrey A, Ellman, Jonathan A

“…The Rh(III)-catalyzed cascade addition of a C-H bond across alkene and carbonyl π-bonds is reported. The reaction proceeds under mild reaction conditions with…”
Get full text

Facile Synthesis of Unsymmetrical Acridines and Phenazines by a Rh(III)-Catalyzed Amination/Cyclization/Aromatization Cascade by Lian, Yajing, Hummel, Joshua R, Bergman, Robert G, Ellman, Jonathan A

“…We report formal [3 + 3] annulations of aromatic azides with aromatic imines and azobenzenes to give acridines and phenazines, respectively. These…”
Get full text

Direct Functionalization of Nitrogen Heterocycles via Rh-Catalyzed C−H Bond Activation by Lewis, Jared C, Bergman, Robert G, Ellman, Jonathan A

“…Nitrogen heterocycles are present in many compounds of enormous practical importance, ranging from pharmaceutical agents and biological probes to electroactive…”
Get full text

Cobalt(III)‐Catalyzed C−H Amidation of Dehydroalanine for the Site‐Selective Structural Diversification of Thiostrepton by Scamp, Ryan J., deRamon, Edward, Paulson, Eric K., Miller, Scott J., Ellman, Jonathan A.

“…Thiostrepton is a potent antibiotic against a broad range of Gram‐positive bacteria, but its medical applications have been limited by its poor aqueous…”
Get full text

Three-Component 1,2-Carboamidation of Bridged Bicyclic Alkenes via RhIII-Catalyzed Addition of C–H Bonds and Amidating Reagents by Brandes, Daniel S, Sirvent, Ana, Mercado, Brandon Q, Ellman, Jonathan A

“…A three-component method is described for the preparation of syn-1,2-disubstituted bridged bicyclic compounds. The reaction was demonstrated for readily…”
Get full text

Catalytic C−O Bond Cleavage of 2-Aryloxy-1-arylethanols and Its Application to the Depolymerization of Lignin-Related Polymers by Nichols, Jason M, Bishop, Lee M, Bergman, Robert G, Ellman, Jonathan A

“…A ruthenium-catalyzed, redox neutral C−O bond cleavage of 2-aryloxy-1-arylethanols was developed that yields cleavage products in 62−98% isolated yield. This…”
Get full text

An Efficient Method for the Preparation of Styrene Derivatives via Rh(III)-Catalyzed Direct C–H Vinylation by Otley, Kate D, Ellman, Jonathan A

“…The development of a method for the Rh(III)-catalyzed direct vinylation of an aromatic C–H bond to give functionalized styrenes in good yield, using vinyl…”
Get full text

Rhodium(III)-Catalyzed Arylation of Boc-Imines via C−H Bond Functionalization by Tsai, Andy S, Tauchert, Michael E, Bergman, Robert G, Ellman, Jonathan A

“…The first rhodium-catalyzed arylation of imines proceeding via C−H bond functionalization is reported. Use of a non-coordinating halide abstractor is important…”
Get full text

Rh(III)-Catalyzed Oxidative Coupling of Unactivated Alkenes via C−H Activation by Tsai, Andy S., Brasse, Mikaël, Bergman, Robert G., Ellman, Jonathan A.

“…Oxime directed aromatic C−H bond activation and oxidative coupling to alkenes is reported using a cationic Rh(III) catalyst. Significantly, the method can be…”
Get full text

Synthesis of Pyridines from Ketoximes and Terminal Alkynes via C–H Bond Functionalization by Martin, Rhia M, Bergman, Robert G, Ellman, Jonathan A

“…An expedient one-pot rhodium catalyzed C–H bond functionalization/electrocyclization/dehydration procedure has been developed for the synthesis of highly…”
Get full text

Base‐Controlled Completely Selective Linear or Branched Rhodium(I)‐Catalyzed C−H ortho‐Alkylation of Azines without Preactivation by Tran, Gaël, Hesp, Kevin D., Mascitti, Vincent, Ellman, Jonathan A.

“…A [RhI]/bisphosphine/base catalytic system for the ortho‐selective C−H alkylation of azines by acrylates and acrylamides is reported. This catalytic system…”
Get full text