Browsing by Author "Jana, Anukul"
Now showing items 1-10 of 10
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Assembly of NHC-stabilized 2-hydrophosphasilenes from Si(iv) precursors: a Lewis acid-base complex
Dhara, Debebrata; Mandal, Debdeep; Maiti, Avijit; Yıldız, Cem Burak; Kalita, Pankaj; Chrysochos, Nicolas; Schulzke, Carola; Chandrasekhar, Vadapalli; Jana, Anukul (Royal Society of Chemistry, 2016)NHC-stabilized 2-hydrophosphasilenes are obtained from 1,2-dihydro-2-chlorophosphasilanes as Si(iv) precursors by a NHC-assisted 1,2-elimination of HCl. The NHC-exchange of these compounds is demonstrated as a proof of ... -
Contrasting reactivity of (boryl)(aryl)lithium-amide with electrophiles: N- vs. p-aryl-C-nucleophilic substitution
Dhara, Debabrata; Vijayakanth, Thangavel; Nayak, Mithilesh Kumar; Kalita, Pankaj; Boomishankar, Ramamoorthy; Yıldız, Cem Burak; Chandrasekhar, Vadapalli; Jana, Anukul (Royal Society of Chemistry, 2018)Herein we report two different reactivity modes of lithium(aryl)(boryl)amide, 4, when it is reacted with chlorosilanes such as SiCl4 and MeSiHCl2, and chlorophosphine, Ph2PCl. Thus, the reaction of lithium(aryl)(boryl)amide, ... -
Dimerization of a marginally stable disilenyl germylene to tricyclic systems: evidence for reversible NHC-coordination
Nieder, David; Yıldız, Cem Burak; Jana, Anukul; Zimmer, Michael; Huch, Volker; Scheschkewitz, David (Royal Soc Chemistry, 2016)Tetrasiladigermatricyclohexanes in two isomeric forms (chair and doubly-bridged tetrahedron) are obtained by the reaction of MeLi with an alpha-chlorosilyl functionalized NHC-stabilized silagermenylidene. Si-29 NMR at low ... -
Disclosing Cyclic(Alkyl)(Amino)Carbenes as a One-Electron Reductant: Synthesis of Acyclic(Amino)(Aryl)Carbene-Based Kekulé Diradicaloids
Maiti, Avijit; Elver, Benedict J.; Bera, Sachinath; Lindl, Felix; I-Krummenacher, Ivo; Krummenacher, Ivo; Ghosh, Prasanta; Yıldız, Cem Burak; Braunschweig, Holger; Schulzke, Carola; Jana, Anukul (Wiley, 2023)Herein we disclose cyclic(alkyl)(amino)carbenes (CAACs) as a one-electron reductant under the formation of a transient radical cation as indicated by EPR spectroscopy. Subsequently, the disclosed CAAC reducing reactivity ... -
The oxidation state in low-valent beryllium and magnesium compounds
Gimferrer, Marti; Danes, Sergi; Vos, Eva; Yıldız, Cem Burak; Corral, Ines; Jana, Anukul; Salvador, Pedro; Andrada, Diego M. (The Royal Society of Chemistry, 2022)Low-valent group 2 (E = Be and Mg) stabilized compounds have been long synthetically pursued. Here we discuss the electronic structure of a series of Lewis base-stabilized Be and Mg compounds. Despite the accepted zero(0) ... -
Reactivity of NHC/diphosphene-coordinated Au(i)-hydride
Dhara, Debabrata; Scheschkewitz, David; Chandrasekhar, Vadapalli; Yıldız, Cem B.; Jana, Anukul (Royal Society of Chemistry, 2021)We report the reactivity of isolable Au(i)-hydride stabilized by an NHC-coordinated diphosphene towards substrates containing C-C and N-N multiple bonds (NHC = N-heterocyclcic carbene). Reactions with dimethyl acetylened ... -
Realizing 1,1-Dehydration of secondary alcohols to carbenes: pyrrolidin-2-ols as a source of cyclic (Alkyl)(Amino)carbenes
Daş, Ayan; Elvers, Benedict J.; Nayak, Mithilesh Kumar; Chrysochos, Nicolas; Anga, Srinivas; Kumar, Amar; Rao, D. Krishna; Narayanan, Tharangattu N.; Schulzke, Carola; Yıldız, Cem Burak; Jana, Anukul (Wiley-VCH Verlag, 2022)Herein we report secondary pyrrolidin-2-ols as a source of cyclic (alkyl)(amino)carbenes (CAAC) for the synthesis of CAAC-Cu-I-complexes and cyclic thiones when reacted with Cu-I-salts and elemental sulfur, respectively, ... -
Reduction of 2-H-substituted pyrrolinium cations: the carbon-carbon single bond in air stable 2,2′-bipyrrolidines as a two-electron-source
Nayak, Mithilesh Kumar; Elvers, Benedict J.; Mandal, Debdeep; Das, Ayan; Ramakrishnan, Raghunathan; Mote, Kaustubh R.; Schulzke, Carola; Yıldız, Cem Burak; Jana, Anukul (Royal Society of Chemistry, 2023)Reduction of 2-H-substituted pyrrolinium cations via initially formed secondary radicals results in either dimerisation or H-abstracted products, while the outcome depends on the N-substituents. The resultant central ... -
Reply to the ‘Comment on “The oxidation state in low-valent beryllium and magnesium compounds”’ by S. Pan and G. Frenking, Chem. Sci., 2022, 13, DOI: 10.1039/D2SC04231B
Gimferrer, Martí; Danés, Sergi; Vos, Eva; Yıldız, Cem Burak; Corral, Inés; Jana, Anukul; Salvador, Pedro; Andrada, Diego M. (Royal Society of Chemistry, 2023)A recent article by Pan and Frenking challenges our assignment of the oxidation state of low valent group 2 compounds. With this reply, we show that our assignment of Be(+2) and Mg(+2) oxidation states in Be(cAACDip)2 and ... -
α,α′-Diamino-p-quinodimethanes with three stable oxidation states
Mahata, Alok; Chandra, Shubhadeep; Maiti, Avijit; Rao, D. Krishna; Yıldız, Cem Burak; Sarkar, Biprajit; Jana, Anukul (American Chemical Society, 2020)Herein, we report the rational design, synthesis, and characterization of α,α′-diamino-substituted-p-quinodimethanes, which are a group of partially substituted p-quinodimethanes. These exhibit two reversible one-electron ...
