Zobrazeno 1 - 10 of 139 pro vyhledávání: '"Arnab Rit"'
2
Simple silver(i)-salt catalyzed selective hydroboration of isocyanates, pyridines, and quinolines
Autor: Vipin K. Pandey, Sangita Sahoo, Arnab Rit
Publikováno v: Chemical Communications. 58:5514-5517
AgSbF6 is developed as an efficient catalyst for the selective hydroboration of various unsaturated functionalities such as isocyanates, pyridines, and quinolines under ligand- and solvent-free mild conditions.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::405c9091d651b89865c0cca9872684dd
https://doi.org/10.1039/d2cc00491g
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3
RuII-Complexes of heteroditopic chelating NHC ligands: effective catalysts for the β-alkylation of secondary alcohols and the synthesis of 2-alkylaminoquinoline derivatives following the dehydrogenative protocol
Autor: Vivek Kumar Singh, S. N. R. Donthireddy, Vipin K. Pandey, Arnab Rit
Publikováno v: Organic & Biomolecular Chemistry. 20:1945-1951
RuII-Complexes of a heteroditopic NHC ligand, featuring ImNHC and tzNHC donors, were noted to be very efficient catalysts (up to 0.001 mol%) for β-alkylation of secondary alcohols and one pot synthesis of diverse 2-alkylaminoquinoline derivatives.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35a842d528f3b7c8e2524a472ee69047
https://doi.org/10.1039/d2ob00034b
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4
A heteroditopic NHC and phosphine ligand supported ruthenium(ii)-complex: an effective catalyst for the N-alkylation of amides using alcohols
Autor: S. N. R. Donthireddy, Vivek Kumar Singh, Arnab Rit
Publikováno v: Catalysis Science & Technology. 12:4050-4056
A heteroditopic Ru(ii)-bis-NHC complex in combination with dppe was developed as an effective catalyst system (0.2 mol% loading) for the N-alkylation of amides and selective mono-/di-alkylation of 4-aminobenzamide derivatives in excellent yields.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c2ebc5664476107a0be46c74a26d9583
https://doi.org/10.1039/d2cy00544a
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5
Electronically tuneable orthometalated RuII–NHC complexes as efficient catalysts for C–C and C–N bond formations via borrowing hydrogen strategy
Autor: Arnab Rit, Praseetha Mathoor Illam
Publikováno v: Catalysis Science & Technology. 12:67-74
The catalytic activities of a series of simple and electronically tuneable cyclometalated RuII–NHC complexes (2a–d) were explored in various C–C/N bond formations following the borrowing hydrogen process. Slight modifications in the ligand back
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7eba61e03b40783702838a0867e1dbf2
https://doi.org/10.1039/d1cy01767e
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6
Towards new coordination modes of 1,2,3-triazolylidene: controlled by the nature of the 1st metalation in a heteroditopic bis-NHC ligand
Autor: Praseetha Mathoor Illam, Chandra Shekhar Tiwari, Arnab Rit
Publikováno v: Chemical Science. 13:13387-13392
The nature of the first metal coordination electronically influences the 1,2,3-triazolium moiety in [L2-H2]Br2, which leads to the unprecedented selective activation of triazole C4/C5 positions as supported by the isolation of several bimetallic comp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3260f26080254a87402faad97f100a97
https://doi.org/10.1039/d2sc05024b
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8
N-Heterocyclic Carbene-Supported Nickel-Catalyzed Selective (Un)Symmetrical N-Alkylation of Aromatic Diamines with Alcohols
Autor: S. N. R. Donthireddy, Misba Siddique, Arnab Rit
Publikováno v: The Journal of organic chemistry.
The "borrowing hydrogen" (BH) approach for the N-alkylation of phenylenediamines using alcohols as coupling partners is highly challenging due to the selectivity issue of the generated products. Furthermore, the development of base-metal systems that
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39c049ce5b78cf03d5be42779fcf1a0f
https://pubmed.ncbi.nlm.nih.gov/36603160
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9
N-Heterocyclic carbene supported zinc catalysed N-formylation of diverse N–H functionalities with carbon dioxide under ambient conditions
Autor: Sangita Sahoo, Subarna Manna, Arnab Rit
Publikováno v: Catalysis Science & Technology.
A heteroditopic NHC ligand supported Zn-catalysed RT N-formylation of diverse N–H moieties with CO2 (1 bar) using PhSiH3 was developed, which offers excellent functional group tolerance, chemoselectivity, and synthons for biologically relevant comp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c4a0e071f2ecb8a473acddc7e5da68f
https://doi.org/10.1039/d3cy00401e
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10
Recent Advances in the Syntheses and Catalytic Applications of Homonuclear Ru‐, Rh‐, and Ir‐Complexes of C NHC ^C Cyclometalated Ligands
Autor: Praseetha Mathoor Illam, Chandra Shekhar Tiwari, S. N. R. Donthireddy, Arnab Rit
Publikováno v: Chemistry – A European Journal. 27:16581-16600
In the past few decades, chemistry of cyclometalated species has gained momentum with increased applications in several areas of scientific developments. Cyclometalation reactions result in the formation of stable metallacycles through the generation
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::682b8c4a6cc8728d2a50e5dc875333bf
https://doi.org/10.1002/chem.202102540
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