Chiral Cyclopentadienyls: Enabling Ligands for Asymmetric Rh(III)-Catalyzed C-H Functionalizations
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N-Heterocyclic carbenes (NHCs) are the ligands of choice in a large variety of transformations entailing different transition metals. However, the number of chiral NHCs suitable as stereocontrolling ligands in asymmetric catalysis remains limited. In parti ...
Cp*Ir(III) catalyzed C-H functionalization is a growing field, since it provides novel complementary reactivities, but enantioselective C-H functionalization reactions with this metal remain a niche. This thesis investigates CpXIr(III) catalyzed asymmetric ...
Asymmetric metal-catalyzed C-H functionalization has enjoyed great success as a powerful strategy for the rapid construction of elaborate structures from simple precursors. For example, aryl (pseudo)halides have been extensively employed as electrophilic s ...
EPFL2019
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Single-atom catalysts exhibit well-defined active sites and potentially maximum atomic efficiency. However, they are unsuitable for reactions that benefit from bimetallic promotion such as the oxygen evolution reaction (OER) in an alkaline medium. Here we ...
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Nature carefully selects specific metal ions for incorporation into the enzymes that catalyse the chemical reactions necessary for life. Hydrogenases, enzymes that activate molecular H-2, exclusively utilize Ni and Fe in [NiFe]-, [FeFe]- and [Fe]-hydrogean ...
Phosphorus- and sulfur-stereogenic compounds are widely used as ligands in asymmetric transition-metal catalysis and as organocatalysts. These molecules also show a large potential for pharmaceutical and agricultural use. However, synthesizing them in a st ...
Direct catalytic modifications of carbon-hydrogen (C-H) bonds, ubiquitous in organic molecules, represent a powerful strategy in organic synthesis. In the past decade, chemists have focused on the development of sustainable methods for functionalization of ...
In oxidative electrochemical organic synthesis, radical intermediates are often oxidized to cations on the way to final product formation. Herein, we describe an approach to transform electrochemically generated organic radical intermediates into neutral p ...
C-H functionalization has been established as an efficient way to generate molecular complexity. The formation of stereogenic carbon atoms by asymmetric C-H functionalization has seen tremendous progress over the past decade. More recently, the direct cata ...
2019
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Z-Selective synthesis of vinyl boronates is challenging. This work describes Fe-catalyzed addition of alkyl radicals, formed by the corresponding alkyl halides, to ethynyl ethynylboronic acid pinacol ester that gives rise to Z-vinyl boronates in high stere ...
