Articles with "sterically encumbered" as a keyword



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Lutetium functionalities supported by a sterically encumbered β-diketiminate ligand

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Published in 2018 at "Journal of Organometallic Chemistry"

DOI: 10.1016/j.jorganchem.2017.12.032

Abstract: Abstract The sterically encumbered NacNac ligand, [HC(MeCNAr)2]− (Ar = 2,6-i-Pr2C6H3), was investigated as a platform for supporting Lu-halide complexes, sought for their potential capability of being further converted into hydrocarbyl derivatives via metathetical chemistries with alkali metal… read more here.

Keywords: supported sterically; functionalities supported; sterically encumbered; encumbered diketiminate ... See more keywords
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Preparation and reactivity of sterically encumbered organocatalysts and their use in the preparation of (S)-Pregabalin precursors

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Published in 2017 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2017.09.067

Abstract: Abstract Herein we describe the preparation of a new class of sterically demanding organocatalysts derived from d -fructose and their use, alongside hitherto unreported doubly quaternarised Cinchona ammonium salts, in the Michael reaction of nitromethane… read more here.

Keywords: reactivity sterically; preparation reactivity; sterically encumbered; encumbered organocatalysts ... See more keywords
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Reductive Elimination from Sterically Encumbered Ni–Polypyridine Complexes

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Published in 2022 at "Organometallics"

DOI: 10.1021/acs.organomet.2c00362

Abstract: Herein we disclose the synthesis of sterically encumbered dialkylnickel(II) complexes bearing 2,9-dimethyl-1,10-phenanthroline ligands. A comparison with their unsubstituted analogues by both X-ray crystallography and theoretical calculations revealed significant distortions in their molecular structures. Eyring plots… read more here.

Keywords: encumbered polypyridine; elimination sterically; polypyridine complexes; sterically encumbered ... See more keywords
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Catalytic intramolecular hydroamination of aminoallenes using titanium and tantalum complexes of sterically encumbered chiral sulfonamides.

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Published in 2020 at "Dalton transactions"

DOI: 10.1039/d0dt02557g

Abstract: Catalysis using earth abundant metals is an important goal due to the relative scarcity and expense of precious metal catalysts. It would be even more beneficial to use earth abundant catalysts for the synthesis of… read more here.

Keywords: chiral sulfonamides; encumbered chiral; tantalum complexes; titanium ... See more keywords