Titanium Imido Complexes via Displacement of -SiMe3 and C-H Bond Activation in a Ti(III) Amido Complex, Promoted by a Cyclic (Alkyl)(Amino) Carbene (cAAC).
Sign Up to like & getrecommendations! Published in 2017 at "European journal of inorganic chemistry"
DOI: 10.1002/ejic.201700295
Abstract: A strong σ-donating cyclic (alkyl)(amino) carbene (cAAC) triggers rearrangement of the silyl(aryl) amido ligand -N(SiMe3)Dipp (Dipp = 2,6-diisopropylphenyl) in the coordination sphere of titanium(III) to afford a novel zwitterionic titanium imido complex with a TiCH2SiMe2[cAAC]… read more here.
Keywords: imido; amino carbene; alkyl amino; titanium ... See more keywords
Hafnium(II) Complexes with Cyclic (Alkyl)(amino)carbene Ligation
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DOI: 10.1021/acs.organomet.8b00688
Abstract: The formal hafnium(II) complexes with cyclic (alkyl)(amino)carbene (cAAC) ligation [(Me2-cAAC)2HfCl2] and [(Me2-cAAC)2Hf(CH2Ph)2] (Me2-cAAC = 1-(2,6-diisopropylphenyl)-3,3,5,5-tetramethylpyrrolidine-2-ylidene) have been synthesized and structurally characterized. read more here.
Keywords: amino carbene; complexes cyclic; hafnium complexes; alkyl amino ... See more keywords
A Donor-Acceptor Cyclopropane by Intramolecular C(sp3)-H Activation at a Cyclic(alkyl)(amino)carbene Center and Its Fascinating Ring-Opening Chemistry.
Sign Up to like & getrecommendations! Published in 2023 at "Organic letters"
DOI: 10.1021/acs.orglett.3c01072
Abstract: Virtually irreversible intramolecular C-H activations are deleterious for aza-carbenes. A picolyl-tethered cyclic(alkyl)(amino)carbene (CAAC) isomerizes into a donor-acceptor cyclopropane in this manner but restores the CAAC status by retro-C-H activation in the presence of trapping agents… read more here.
Keywords: alkyl amino; amino carbene; chemistry; cyclic alkyl ... See more keywords
Cyclic (Alkyl)(amino)carbene Ligand-Promoted Nitro Deoxygenative Hydroboration with Chromium Catalysis: Scope, Mechanism, and Applications.
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DOI: 10.1021/jacs.0c12318
Abstract: Transition metal catalysis that utilizes N-heterocyclic carbenes as noninnocent ligands in promoting transformations has not been well studied. We report here a cyclic (alkyl)(amino)carbene (CAAC) ligand-promoted nitro deoxygenative hydroboration with cost-effective chromium catalysis. Using 1… read more here.
Keywords: amino carbene; hydroboration; catalysis; deoxygenative hydroboration ... See more keywords
Reversible 1,1-hydroaluminations and C-H activation in reactions of a cyclic (alkyl)(amino) carbene with alane.
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DOI: 10.1039/c8cc05013a
Abstract: Varying the reaction ratio of cyclic (alkyl)(amino) carbene (cAACEt) with AlH3·NEtMe2 leads to the isolation of (cAACEtH)AlH2·NEtMe21 and (cAACEtH)2Al(μ-H)2AlH2·NEtMe22 and the first example of a monomeric dialkyl-aluminum hydride (cAACEtH)2AlH 3. VT and 1H-1H EXSY NMR… read more here.
Keywords: amino carbene; alkyl amino; reversible hydroaluminations; hydroaluminations activation ... See more keywords
Synthesis, structure and DFT calculations of mononuclear cyclic (alkyl)(amino) carbene supported titanium(ii) complexes.
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DOI: 10.1039/c9dt03342d
Abstract: The mononuclear cyclic (alkyl)(amino)carbene (cAAC) supported titanium(iii) chloride complex [(cAAC)2TiCl3] has been synthesized by treatment of free cAAC with TiCl3(THF)3. Further reduction of (cAAC)2TiCl3 with potassium graphite (KC8) afforded the desired (cAAC)2TiCl2 complex, which features… read more here.
Keywords: amino carbene; supported titanium; mononuclear cyclic; alkyl amino ... See more keywords
Understanding cyclic(alkyl)(amino)carbene-copper complex catalysed N-H and O-H bond addition to electron deficient olefins.
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DOI: 10.1039/d2cc05613e
Abstract: The hydroamination of electron-deficient olefins was carried out using the (CAAC)Cu-Cl (CAAC = cyclic (alkyl)(amino)carbene) catalyst with an excellent yield at room temperature and under an open atmosphere. Furthermore, the catalyst shows excellent efficiency in… read more here.
Keywords: alkyl amino; electron deficient; amino carbene; deficient olefins ... See more keywords
N-heterocyclic carbene and cyclic (alkyl)(amino)carbene adducts of plumbanes and plumbylenes.
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DOI: 10.1039/d2dt02462d
Abstract: Lewis-acid/base adducts of N-heterocyclic carbenes (NHCs) and the cyclic (alkyl)(amino)carbene cAACMe (1-(2,6-di-iso-propylphenyl)-3,3,5,5-tetramethyl-pyrrolidin-2-ylidene) with selected lead(II) and lead(IV) compounds are presented. The reaction of the NHCs Me2ImMe (1,3,4,5-tetramethyl-imidazolin-2-ylidene), iPr2ImMe (1,3-di-isopropyl-4,5-dimethyl-imidazolin-2-ylidene), Dipp2Im (1,3-bis-(2,6-di-isopropylphenyl)-imidazolin-2-ylidene) and cAACMe (1-(2,6-di-iso-propylphenyl)-3,3,5,5-tetramethyl-pyrrolidin-2-ylidene) with… read more here.
Keywords: cyclic alkyl; alkyl amino; amino carbene; ylidene ... See more keywords
Bicyclic (alkyl)(amino)carbene (BICAAC) in a dual role: activation of primary amides and CO2 towards catalytic N-methylation
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DOI: 10.1039/d3sc01216f
Abstract: Herein, we report the first catalytic methylation of primary amides using CO2 as a C1 source. A bicyclic (alkyl)(amino)carbene (BICAAC) exhibits dual role by activating both primary amide and CO2 to carry out this catalytic… read more here.
Keywords: alkyl amino; amino carbene; carbene bicaac; primary amides ... See more keywords