- Copper catalyzed C(sp3)-H bond alkylation via photoinduced ligand-to-metal charge transfer
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Utilizing catalytic CuCl2 we report the functionalization of numerous feedstock chemicals via the coupling of unactivated C(sp3)-H bonds with electron-deficient olefins. The active cuprate catalyst undergoes Ligand-to-Metal Charge Transfer (LMCT) to enable the generation of a chlorine radical which acts as a powerful hydrogen atom transfer reagent capable of abstracting strong electron-rich C(sp3)-H bonds. Of note is that the chlorocuprate catalyst is an exceedingly mild oxidant (0.5 V vs SCE) and that a proposed protodemetalation mechanism offers a broad scope of electron-deficient olefins, offering high diastereoselectivity in the case of endocyclic alkenes. The coupling of chlorine radical generation with Cu reduction through LMCT enables the generation of a highly active HAT reagent in an operationally simple and atom economical protocol.
- Treacy, Sean M.,Rovis, Tomislav
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supporting information
p. 2729 - 2735
(2021/03/01)
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- BICYCLIC HETEROARYL DERIVATIVE AND PHARMACEUTICAL COMPOSITION COMPRISING SAME
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Bicyclic heteroaryl derivatives of Formula 1, and pharmaceutically acceptable salts, isomers, hydrates and solvates thereof can selectively and effectively inhibit DGAT1, and thus can be useful as medicines for effectively treating dangerous diseases such as obesity, type 2 diabetes, abnormal lipidemia, metabolic syndrome (syndrome X) and the like, which are caused by DGAT1, with no adverse side effects.
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Page/Page column 26-27
(2013/11/05)
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- Organocatalytic entry to chiral bicyclo[3.n.1]alkanones via direct asymmetric intramolecular aldolization
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(Chemical Equation Presented) The facile stereoselective syntheses of endo-8-hydroxybicyclo[3.3.1]nonan-2-one and encto-7-hydroxybicyclo[3.2.1]octan- 2-one, featuring an α-amino acid catalyzed intramolecular aldolization of σ-symmetric substrates, are des
- Itagaki, Noriaki,Kimura, Mari,Sugahara, Tsutomu,Iwabuchi, Yoshiharu
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p. 4185 - 4188
(2007/10/03)
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