Search Results - "Chakrabortty, Soumyadeep"

Access to Enantiomerically Pure P-Chiral 1-Phosphanorbornane Silyl Ethers by Ramazanova, Kyzgaldak, Chakrabortty, Soumyadeep, Kallmeier, Fabian, Kretzschmar, Nadja, Tin, Sergey, Lönnecke, Peter, de Vries, Johannes G., Hey-Hawkins, Evamarie

“…Sulfur-protected enantiopure P-chiral 1-phosphanorbornane silyl ethers 5a,b are obtained in high yields via the reaction of the hydroxy group of P-chiral…”
Get full text

Catalytic N‑Alkylation of (Hetero)Aromatic Amines and Tandem Annulation Reactions by Kumar, Rohit, Babu, Reshma, Chakrabortty, Soumyadeep, Madhu, Vedichi, Balaraman, Ekambaram

“…A general and practical approach for N-alkylation of heteroaromatic amines with heteroaromatic alcohols is always challenging and rarely reported. Here, we…”
Get full text

A Bis (BICAAC) Palladium(II) Complex: Synthesis and Implementation as Catalyst in Heck-Mizoroki and Suzuki-Miyaura Cross Coupling Reactions by Chakrabortty, Soumyadeep, Kaur, Mandeep, Adhikari, Manu, Manar, Krishna K, Singh, Sanjay

“…Carbenes are one of the most appealing, well-explored, and exciting ligands in modern chemistry due to their tunable stereoelectronic properties and a wide…”
Get full text

Cobalt‐Catalyzed Asymmetric Hydrogenation: Substrate Specificity and Mechanistic Variability by Chakrabortty, Soumyadeep, Bruin, Bas, Vries, Johannes G.

“…Asymmetric hydrogenation finds widespread application in academia and industry. And indeed, a number of processes have been implemented for the production of…”
Get full text

A Homogeneous Nickel Catalyst for Reductive Amination of γ‐Keto Acids using Hydrogen by Chakrabortty, Soumyadeep, Moritz, Jan‐Ole, Kallmeier, Fabian, Neumann, Helfried, Tin, Sergey, Beller, Matthias, de Vries, Johannes G.

“…Abstract The reductive amination of levulinic and 2‐acetyl benzoic acids with hydrogen and various amines proceeds efficiently in the presence of a homogeneous…”
Get full text

Access to Enantiomerically Pure IP/I-Chiral 1-Phosphanorbornane Silyl Ethers by Ramazanova, Kyzgaldak, Chakrabortty, Soumyadeep, Kallmeier, Fabian, Kretzschmar, Nadja, Tin, Sergey, Lönnecke, Peter, de Vries, Johannes G, Hey-Hawkins, Evamarie

“…Sulfur-protected enantiopure P-chiral 1-phosphanorbornane silyl ethers 5a,b are obtained in high yields via the reaction of the hydroxy group of P-chiral…”
Get full text

Ru‐Catalyzed Direct Asymmetric Reductive Amination of Bio‐Based Levulinic Acid and Ester for the Synthesis of Chiral Pyrrolidinone by Chakrabortty, Soumyadeep, Zheng, Shasha, Kallmeier, Fabian, Baráth, Eszter, Tin, Sergey, Vries, Johannes G.

“…Direct asymmetric reductive amination of bio‐based levulinic acid (LA) to the enantioenriched 5‐methylpyrrolidinone is achieved by using a readily available…”
Get full text

Rh-Catalyzed Enantioselective Hydrogenation of Di- and Tri-Substituted Enamides Enabled by Easily Tunable P‑Stereogenic N‑Phosphinyl Phosphoramidite Ligands by Chakrabortty, Soumyadeep, Konieczny, Katharina, Moritz, Jan-Ole, Zheng, Shasha, Tin, Sergey, Müller, Bernd H., de Vries, Johannes G.

“…A modular mixed donor P-stereogenic narrow bite angle N-phosphinyl phosphoramidite ligand library (JoSoPhos) was synthesized. The JoSoPhos ligand library was…”
Get full text

Synthesis of N‑Substituted 3‑Hydroxypyridinium Salts from Bioderived 5‑Hydroxymethylfurfural in Water by Zheng, Shasha, Chakrabortty, Soumyadeep, Baráth, Eszter, Tin, Sergey, de Vries, Johannes G.

“…We present a new sustainable protocol for the syntheses of bio-derived N-substituted 3-hydroxypyridinium salts with a broad substrate scope from…”
Get full text

Cobalt‐Catalyzed Enantioselective Hydrogenation of Trisubstituted Carbocyclic Olefins: An Access to Chiral Cyclic Amides by Chakrabortty, Soumyadeep, Konieczny, Katharina, Zwart, Felix J., Bobylev, Eduard. O., Baráth, Eszter, Tin, Sergey, Müller, Bernd H., Reek, Joost N. H., Bruin, Bas, Vries, Johannes G.

“…The enantioselective hydrogenation of cyclic enamides has been achieved using an earth‐abundant cobalt‐bisphosphine catalyst. Using CoCl2/(S,S)‐Ph‐BPE, several…”
Get full text

Synthesis of P -stereogenic 1-phosphanorbornane-derived phosphine–phosphite ligands and application in asymmetric catalysis by Ramazanova, Kyzgaldak, Chakrabortty, Soumyadeep, Müller, Bernd H., Lönnecke, Peter, de Vries, Johannes G., Hey-Hawkins, Evamarie

“…A convenient synthesis of enantiopure mixed donor phosphine–phosphite ligands has been developed incorporating P -stereogenic phosphanorbornane and axially…”
Get full text

P‑Chirogenic Diphosphazanes with Axially Chiral Substituents and Their Use in Rh-Catalyzed Asymmetric Hydrogenation by Moritz, Jan-Ole, Chakrabortty, Soumyadeep, Müller, Bernd H, Spannenberg, Anke, Kamer, Paul C. J

“…A convenient synthesis of enantiopure P-chirogenic diphosphazanes incorporating bulky bisphenol and 1,1′-bi-2-naphthol-derived substituents via the…”
Get full text

Synthesis of -stereogenic 1-phosphanorbornane-derived phosphine-phosphite ligands and application in asymmetric catalysis by Ramazanova, Kyzgaldak, Chakrabortty, Soumyadeep, Müller, Bernd H, Lönnecke, Peter, de Vries, Johannes G, Hey-Hawkins, Evamarie

“…A convenient synthesis of enantiopure mixed donor phosphine-phosphite ligands has been developed incorporating P -stereogenic phosphanorbornane and axially…”
Get full text

Cobalt‐Catalyzed Asymmetric Hydrogenation: Substrate Specificity and Mechanistic Variability by Chakrabortty, Soumyadeep, Bruin, Bas, Vries, Johannes G.

“…Asymmetric hydrogenation finds widespread application in academia and industry. And indeed, a number of processes have been implemented for the production of…”
Get full text

A Simple Synthetic Route to [Rh(acac)(CO)(NHC)] Complexes: Ligand Property Diagnostic Tools and Precatalysts by Guillet, Sébastien G., Pisanò, Gianmarco, Chakrabortty, Soumyadeep, Müller, Bernd H., Vries, Johannes G., Kamer, Paul C. J., Cazin, Catherine S. J., Nolan, Steven. P.

“…An operationally simple, user and eco‐friendly synthetic protocol for the synthesis of [Rh(acac)(CO)(NHC)] complexes is described. Insights into the mechanism…”
Get full text

Two‐Coordinate Cu(I) and Au(I) Complexes Supported by BICAAC and CAAC Ligands by Manar, Krishna K., Chakrabortty, Soumyadeep, Porwal, Vishal Kumar, Prakash, Darsana, Thakur, Sandeep Kumar, Choudhury, Angshuman Roy, Singh, Sanjay

“…Two‐coordinate Cu(I) and Au(I) complexes supported by bicyclic (alkyl)(amino)carbene, [BICAAC‐CuCl] (1), [BICAAC‐CuI] (2), [(BICAAC)2Cu]+[PF6]– (3) and…”
Get full text

Cobalt‐katalysierte enantioselektive Hydrierung von dreifach substituierten carbocyclischen Olefinen: Zugang zu chiralen cyclischen Amiden by Chakrabortty, Soumyadeep, Konieczny, Katharina, Zwart, Felix J., Bobylev, Eduard. O., Baráth, Eszter, Tin, Sergey, Müller, Bernd H., Reek, Joost N. H., Bruin, Bas, Vries, Johannes G.

“…Die enantioselektive Hydrierung von cyclischen Enamiden wurde mit einem Cobalt‐Bisphosphin‐Katalysator erreicht. Die Reduktion verschiedenster dreifach…”
Get full text