Dendritic Organosilica Nanoparticle‐Based Metal‐Enzyme Hybrid Catalyst for Chemoenzymatic Deracemization of Cyclic Amines
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DOI: 10.1002/cctc.202201292
Abstract: The synthesis of enantiopure chiral cyclic amines is of critical importance but highly challenging. In this study, a metal‐enzyme hybrid catalyst was fabricated by the co‐immobilization of palladium nanoparticles and monoamine oxidases on dendritic organosilica… read more here.
Keywords: metal enzyme; enzyme hybrid; catalyst; hybrid catalyst ... See more keywords
Generation and trapping of non-aromatic cycloimines via diazotization/dediazotization of N-amino cyclic amines: theoretical and experimental results
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DOI: 10.1007/s11224-020-01567-z
Abstract: A theoretical investigation of the model diazotization/dediazotization of N-aminopiperidine and N-aminomorpholine at the DFT (B3LYP/6-31+G(d)) level indicated that the corresponding cycloimines can be generated transiently, which can be trapped with dimethyl acetylenedicarboxylate (DMAD) to form… read more here.
Keywords: diazotization dediazotization; cyclic amines; diazotization; dediazotization ... See more keywords
Computational Study of Key Mechanistic Details for a Proposed Copper (I)-Mediated Deconstructive Fluorination of N-Protected Cyclic Amines
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DOI: 10.1007/s11244-021-01443-y
Abstract: Using calculations, we show that a proposed Cu(I)-mediated deconstructive fluorination of N -benzoylated cyclic amines with Selectfluor ® is feasible and may proceed through: (a) substrate coordination to a Cu(I) salt, (b) iminium ion formation… read more here.
Keywords: mediated deconstructive; deconstructive fluorination; iminium ion; fluorination ... See more keywords
Cyclic amines homobimetallic ruthenium pre-catalysts bearing bidentate phosphine and their dual catalytic activity for the ring-opening metathesis and atom-radical polymerizations
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Molecular Structure"
DOI: 10.1016/j.molstruc.2019.126874
Abstract: Abstract A series of [RuCl(dppb)(μ-Cl)3Ru(dppb)(amine)] complexes, where amine is pyrrolidine (1), piperidine (2) or perhydroazepine (3), were synthesized and characterized by elemental analysis, FTIR, UV–Vis, and 1H, 13C{1H} and 31P{1H} NMR spectroscopy. The electrochemistry properties… read more here.
Keywords: cyclic amines; catalysts bearing; ruthenium pre; homobimetallic ruthenium ... See more keywords
Deconstructive Pyridylation of Unstrained Cyclic Amines through a One-Pot Umpolung Approach.
Sign Up to like & getrecommendations! Published in 2023 at "Organic letters"
DOI: 10.1021/acs.orglett.3c00922
Abstract: A one-pot umpolung method for the ring-opening pyridylation of unstrained cyclic amines was developed using N-amidopyridinium salts. This process involves the formation of electron donor-acceptor complexes between bromide and N-amidopyridinium salts, ultimately leading to the… read more here.
Keywords: pot umpolung; pyridylation unstrained; one pot; unstrained cyclic ... See more keywords
Photo- and Metal-Mediated Deconstructive Approaches to Cyclic Aliphatic Amine Diversification
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DOI: 10.1021/jacs.3c01318
Abstract: Described herein are studies toward the core modification of cyclic aliphatic amines using either a riboflavin/photo-irradiation approach or Cu(I) and Ag(I) to mediate the process. Structural remodeling of cyclic amines is explored through oxidative C–N… read more here.
Keywords: photo; metal mediated; persulfate; photo metal ... See more keywords
Dehydrogenation of cyclic amines by a coordinatively unsaturated Cp*Ir(iii) phosphoramidate complex.
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DOI: 10.1039/c7dt01499f
Abstract: The reaction of a Cp*Ir(iii) phosphoramidate complex with secondary amines gives amine, imine-bound Cp*Ir(iii) hydride complexes resulting from amine dehydrogenation. These well-characterized species could serve as models of relevant intermediates that have been proposed in… read more here.
Keywords: iii phosphoramidate; cyclic amines; dehydrogenation cyclic; phosphoramidate complex ... See more keywords
A metal-catalyzed new approach for α-alkynylation of cyclic amines† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c8sc04115f
Sign Up to like & getrecommendations! Published in 2019 at "Chemical Science"
DOI: 10.1039/c8sc04115f
Abstract: The first catalytic α-alkynylation of cyclic amines with the help of the N-propargylic group with an exclusive high E-stereoselectivity has been realized. read more here.
Keywords: cyclic amines; new approach; catalyzed new; alkynylation cyclic ... See more keywords
Room temperature catalytic dehydrogenation of cyclic amines with the liberation of H2 using water as a solvent
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DOI: 10.1039/c9gc00201d
Abstract: Catalytic dehydrogenation of cyclic amines, in particular partially saturated N-heterocycles to N-heterocyclic arenes, with the removal of molecular hydrogen as the sole byproduct in water is reported. This dehydrogenation reaction proceeds smoothly under very mild… read more here.
Keywords: cyclic amines; dehydrogenation; water; dehydrogenation cyclic ... See more keywords
Skeletal remodelling of α-substituted cyclic eneformamides to α-ketonyl cyclic amines
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DOI: 10.1039/d0nj02768e
Abstract: A modular dehomologation strategy, which skeletally remodels cyclic α-substituted eneformamides to one-carbon shorter α-ketonyl saturated cyclic amines is described. The approach hinges on N-iodosuccinimide-assisted C–halogen bond formation followed by C–N bond cleavage to arrive at… read more here.
Keywords: cyclic eneformamides; skeletal remodelling; cyclic amines; remodelling substituted ... See more keywords