Mechanistic Insights into Manganese (I)‐Catalyzed Chemoselective Hydroarylations of Alkynes: A Theoretical Study
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DOI: 10.1002/cctc.201801301
Abstract: Density functional theory calculations were employed to elucidate the mechanism of Mn‐catalyzed chemoselective hydroarylation reactions. The Mn‐catalyzed [4+2] annulation undergoes a reaction pathway involving sequential imine‐directed C−H bond cleavage, alkyne insertion into the Mn−C bond,… read more here.
Keywords: catalyzed chemoselective; manganese catalyzed; study; alkyne insertion ... See more keywords
Heterogeneous Catalyzed Chemoselective Reductive Amination of Halogenated Aromatic Aldehydes
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DOI: 10.1002/cctc.202100334
Abstract: The chemoselective conversion of a specific functional group in a multifunctional substrate is of great importance in the chemical industry to obtain cost efficient, sustainable and waste free processes. This work focuses on the chemoselective… read more here.
Keywords: halogenated aromatic; heterogeneous catalyzed; catalyzed chemoselective; amination halogenated ... See more keywords
Ir-catalyzed chemoselective reduction of β-amido esters: A versatile approach to β-enamino esters
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DOI: 10.1016/j.tet.2018.12.024
Abstract: Abstract The conversion of β-amido esters to β-enamino esters is an indispensable step for some synthetic approaches to alkaloids and related medicines. Known methods for such transformation are not only stepwise, but also proceed with… read more here.
Keywords: amido esters; catalyzed chemoselective; chemoselective reduction; enamino esters ... See more keywords
Iron-catalyzed chemoselective hydride transfer reactions
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DOI: 10.1016/j.tet.2021.132187
Abstract: ABSTRACT A Diaminocyclopentadienone iron tricarbonyl complex has been applied in chemoselective hydrogen transfer reductions. This bifunctional iron complex demonstrated a broad applicability in mild conditions in various reactions, such as reduction of aldehydes over ketones,… read more here.
Keywords: iron catalyzed; catalyzed chemoselective; chemoselective hydride; hydride transfer ... See more keywords
Hypoiodite-Catalyzed Chemoselective Tandem Oxidation of Homotryptamines to Peroxy- and Epoxytetrahydropyridoindolenines.
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DOI: 10.1021/acs.orglett.0c03001
Abstract: We developed the hypoiodite-catalyzed tandem dearomative peroxycyclization of homotryptamine derivatives to peroxytetrahydropyridoindolenines under mild conditions. During the course of a mechanistic study, we found that a tandem oxidative cyclization/epoxidation as an unexpected reaction proceeded in… read more here.
Keywords: oxidation; tandem oxidation; oxidation homotryptamines; chemoselective tandem ... See more keywords
Manganese-Catalyzed Chemoselective Hydrosilylation of Nitroarenes: Sustainable Route to Aromatic Amines.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c03576
Abstract: Herein we report efficient catalytic hydrosilylations of nitroarenes to form the corresponding aromatic amines using a well-defined manganese(II)-NNO pincer complex with a low catalyst loading (1 mol %) under solvent-free conditions. This base-metal-catalyzed hydrosilylation is… read more here.
Keywords: manganese catalyzed; aromatic amines; hydrosilylation nitroarenes; catalyzed chemoselective ... See more keywords
Palladium-Catalyzed Chemoselective Oxygenation of C(sp2)-H and C(sp3)-H Bonds in Isatins.
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DOI: 10.1021/acs.orglett.3c00342
Abstract: The palladium-catalyzed chemoselective C(sp2)-H and C(sp3)-H bond oxygenation of substituted isatin derivatives is reported. This mild protocol exhibits the C5 C(sp2)-H oxygenation of isatins through electrophilic intermolecular C-H palladation in concentrated solutions using PhI(OAc)2 or… read more here.
Keywords: sp2 sp3; palladium catalyzed; oxygenation; catalyzed chemoselective ... See more keywords
Palladium-Catalyzed Chemoselective Activation of sp3 vs sp2 C-H Bonds: Oxidative Coupling To Form Quaternary Centers.
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DOI: 10.1021/acscatal.9b00091
Abstract: The oxidative activation of alkyl C-H bonds vs arene C-H bonds with Pd(OAc)2 has been found to be generalizable to a number of nucleophilic substrates allowing the formation of a range of hindered quaternary centers.… read more here.
Keywords: activation; catalyzed chemoselective; chemoselective activation; activation sp3 ... See more keywords
Ni-Catalyzed chemoselective alcoholysis of N-acyloxazolidinones
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DOI: 10.1039/c7gc03534a
Abstract: Although N-acyloxazolidinone-based (catalytic) asymmetric synthetic methodologies occupy an important position in modern organic synthesis, the catalytic cleavage of a chiral auxiliary remains underdeveloped. We report the Ni(cod)2/bipyr.-catalyzed alcoholysis of N-acyloxazolidinones to deliver esters. The reaction… read more here.
Keywords: alcoholysis; chemoselective alcoholysis; catalyzed chemoselective; chemistry ... See more keywords
(Salen)Mn(iii)-catalyzed chemoselective acylazidation of olefins† †Electronic supplementary information (ESI) available. CCDC 1546115. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c8sc01882k
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Science"
DOI: 10.1039/c8sc01882k
Abstract: A (salen)Mn(iii)-catalyzed chemoselective acylazidation of olefins was developed based on strategic application of the distinct reactivity of oxomanganese(v) species. read more here.
Keywords: acylazidation olefins; catalyzed chemoselective; iii catalyzed; chemoselective acylazidation ... See more keywords
Cobalt-catalyzed chemoselective dehydrogenation through radical translocation under visible light
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DOI: 10.1039/d2sc02291e
Abstract: The transformations that allow the direct removal of hydrogen from their corresponding saturated counterparts by the dehydrogenative strategy are a dream reaction that has remained largely underexplored. In this report, a straightforward and robust cobaloxime-catalyzed… read more here.
Keywords: cobalt catalyzed; catalyzed chemoselective; radical translocation; dehydrogenation ... See more keywords