Weakly Coordinating tert-Amide-Assisted Ru(II)-Catalyzed Synthesis of Azacoumestans via Migratory Insertion of Quinoid Carbene: Application in the Total Synthesis of Isolamellarins.
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DOI: 10.1021/acs.orglett.2c01556
Abstract: A weakly coordinating tert-amide-directed straightforward method was developed for the synthesis of azacoumestans using the corresponding azaheterocycle derivatives and diazonaphthoquinones under cheap Ru(II)-catalyzed conditions. The reaction proceeds via migratory insertion of quinoid carbene and subsequent… read more here.
Keywords: synthesis azacoumestans; synthesis; via migratory; tert amide ... See more keywords
Cobalt(III)- and Rhodium(III)-Catalyzed C-H Amidation and Synthesis of 4-Quinolones: C-H Activation Assisted by Weakly Coordinating and Functionalizable Enaminone.
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DOI: 10.1021/acs.orglett.7b00583
Abstract: Cobalt(III) and rhodium(III) catalysts exhibited complementary scope in C-H amidation of aryl enaminones. The amidation reactions proceeded with broad scope under the assistance of a weakly coordinating and bifunctional enaminone directing group. The electrophilicity of… read more here.
Keywords: weakly coordinating; enaminone; iii rhodium; cobalt iii ... See more keywords
Manganese-Catalyzed ortho-C-H Amidation of Weakly Coordinating Aromatic Ketones.
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DOI: 10.1021/acs.orglett.8b01770
Abstract: An efficient manganese-catalyzed ortho-C-H amidation of weakly coordinating aromatic ketones using the readily available sulfonyl azide as the amination reagent is developed. The key step is the ketone directed aromatic metalation using the in situ… read more here.
Keywords: catalyzed ortho; coordinating aromatic; weakly coordinating; manganese catalyzed ... See more keywords
Cobalt Catalyzed Hydroarylation of Michael Acceptors with Indolines Directed by a Weakly Coordinating Functional Group.
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DOI: 10.1021/acs.orglett.9b01228
Abstract: A cobalt(III) catalyzed hydroarylation of Michael acceptors using indolines, selectively at the C-7 position, has been reported. For the selective C-7 functionalization of indoline, we have used a weakly coordinating amide carbonyl group. During the… read more here.
Keywords: hydroarylation; catalyzed hydroarylation; weakly coordinating; hydroarylation michael ... See more keywords
Li-Ion Transport and Solvation of a Li Salt of Weakly Coordinating Polyanions in Ethylene Carbonate/Dimethyl Carbonate Mixtures.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.1c25067
Abstract: Electrolytes with a high Li-ion transference number (tLi) have attracted significant attention for the improvement of the rapid charge-discharge performance of Li-ion batteries (LIBs). Nonaqueous polyelectrolyte solutions exhibit high tLi upon immobilization of the anion… read more here.
Keywords: ethylene carbonate; dimethyl carbonate; carbonate dimethyl; salt weakly ... See more keywords
Al(ORF)3 (RF = C(CF3)3) activated silica: a well-defined weakly coordinating surface anionâ€
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DOI: 10.1039/c9sc05904k
Abstract: Weakly Coordinating Anions (WCAs) containing electron deficient delocalized anionic fragments that are reasonably inert allow for the isolation of strong electrophiles. Perfluorinated borates, perfluorinated aluminum alkoxides, and halogenated carborane anions are a few families of… read more here.
Keywords: 600 40z; weakly coordinating; cf3; surface ... See more keywords
The perfluoroadamantoxy aluminate as an ideal weakly coordinating anion? - synthesis and first applications.
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DOI: 10.1039/d3dt00199g
Abstract: Weakly coordinating anions (WCAs) facilitate the stabilization and isolation of highly reactive and almost "naked" cations. Alkoxyaluminate-based WCAs such as [Al(OC(CF3)3)4]- ([pf]-) are widely used due to their synthetic accessibility and their high stability. However,… read more here.
Keywords: spectroscopy; synthesis; pfad; pfad could ... See more keywords
Anionic N-heterocyclic carbenes featuring weakly coordinating perfluoroalkylphosphorane moieties.
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DOI: 10.1039/d3dt01249b
Abstract: The anionic 1-methyl-3-(tris(pentafluoroethyl)difluorophosphorane)imidazoline-2-ylidenate 3 and the 1,3-bis(tris(pentafluoroethyl)difluorophosphorane)imidazoline-2-ylidenate dianion 4 were obtained in high yield by deprotonation of {(C2F5)3PF2}-methylimidazole 1 and the {(C2F5)3PF2}2-imidazolate anion 2. Carbenes 3 and 4 are first examples for a novel class… read more here.
Keywords: featuring weakly; anionic heterocyclic; carbenes featuring; coordinating perfluoroalkylphosphorane ... See more keywords