Results 21 to 30 of about 4,288,781 (386)

Copper-mediated aerobic trifluoromethyltelluration of boronic acids with [Me4N][TeCF3]

open access: yesiScience, 2022
Summary: A copper-mediated trifluoromethyltelluration of arylboronic acids with [Me4N][TeCF3] using air as an environmental friendly oxidant is presented. The reaction proceeded smoothly under mild conditions in the presence of Cu(OTf)2 and bipyridine to
Jing-Yan Dong   +3 more
doaj   +1 more source

Copper-catalyzed oxidative dehydrogenative dearomatization of indole derivatives: A new strategy to construct spirocyclic indolenines

open access: yesiScience, 2022
Summary: A concise copper-catalyzed oxidative dehydrogenative dearomatization of indole derivatives for the direct synthesis of spirocyclic indolenines containing fluorene and indeno[2,1-b]indole groups has been established.
Junli Chao   +6 more
doaj   +1 more source

The serendipitous effect of KF in Ritter reaction: Photo-induced amino-alkylation of alkenes

open access: yesiScience, 2021
Summary: Ritter reaction has been recognized as an elegant strategy to construct the C−N bond. Its key feature is forming the carbocation for nucleophilic attack by nitriles.
Yu-Qing Guan   +6 more
doaj   +1 more source

Unanticipated switch of reactivity of isonitrile via N≡C bond scission: Cascade formation of symmetrical sulfonyl guanidine

open access: yesiScience, 2023
Summary: Unanticipated formation of symmetrical sulfonyl guanidine was observed while treating isonitriles with N,N-dibromoarylsulfonamides in absence of an external amine source.
Debashish Mishra   +2 more
doaj   +1 more source

Catalytic Enantiodivergent Michael Addition by Subtle Adjustment of Achiral Amino Moiety of Dipeptide Phosphines

open access: yesiScience, 2020
Summary: Over the past decades, asymmetric catalysis has been intensely investigated as a powerful tool for the preparation of numerous chiral biologically active compounds.
Huamin Wang   +3 more
doaj   +1 more source

Selective Quadruple C(sp3)-F Functionalization of Polyfluoroalkyl Ketones

open access: yesiScience, 2020
Summary: The significance of organofluorine compounds has inspired the establishment of numerous methods for the functionalization of rather inert C-F bonds.
Ting Xie   +7 more
doaj   +1 more source

Further developments of β,γ-unsaturated α-ketoesters as versatile synthons in asymmetric catalysis

open access: yesiScience, 2022
Summary: β,γ-Unsaturated α-ketoesters prove to be versatile organic synthons participating in diverse catalytic asymmetric transformations with the breathtaking development of organo-catalysis, new catalytic systems including ingenious chiral ligands as ...
Ruixian Deng   +4 more
doaj   +1 more source

Three-center-four-electron halogen bond enables non-metallic complex catalysis for Mukaiyama-Mannich-type reaction

open access: yesiScience, 2022
Summary: The three-center-four-electron halogen bond (3c4e X-bond) presents a fundamental design concept for catalysis. By integrating halogen(I) (X+: I+ or Br+), the bis-pyridyl ligand NN, and a non-nucleophilic counteranion Y, we developed non-metallic
Shunya Oishi   +6 more
doaj   +1 more source

Turing patterns by supramolecular self-assembly of a single salphen building block

open access: yesiScience, 2022
Summary: In the 1950s, Alan Turing showed that concerted reactions and diffusion of activating and inhibiting chemical species can autonomously generate patterns without previous positional information, thus providing a chemical basis for morphogenesis ...
Martha V. Escárcega-Bobadilla   +3 more
doaj   +1 more source

Reticular Chemistry for Highly Porous Metal-Organic Frameworks: The Chemistry and Applications.

open access: yesAccounts of Chemical Research, 2022
ConspectusCurrent global crises related to clean energy and the environment entail the development of materials that are capable of addressing these challenges.
Zhijie Chen   +3 more
semanticscholar   +1 more source

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