Results 21 to 30 of about 374,817 (289)

Reações de acoplamento cruzado de organossilanos catalisadas por paládio: aspectos históricos, sintéticos e mecanísticos Palladium catalyzed cross coupling reactions of organosilicon compounds: historical, synthetic and mechanistic aspects

open access: yesQuímica Nova, 2007
The development of the palladium catalyzed cross-coupling reactions employing organosilicon compounds is described. Important synthetic methods utilized to prepare organosilicons and different types of cross-coupling reactions involving these compounds ...
Róbson R. Teixeira   +2 more
doaj   +1 more source

Iridium-Catalyzed Silylation of Five-Membered Heteroarenes: High Sterically Derived Selectivity from a Pyridyl-Imidazoline Ligand. [PDF]

open access: yes, 2020
The steric effects of substituents on five-membered rings are less pronounced than those on six-membered rings because of the difference in bond angles. Thus, the regioselectivities of reactions of five-membered heteroarenes that occur with selectivities
Hartwig, John F   +3 more
core   +1 more source

Well-Defined Pre-Catalysts in Amide and Ester Bond Activation

open access: yesMolecules, 2019
Over the past few decades, transition metal catalysis has witnessed a rapid and extensive development. The discovery and development of cross-coupling reactions is considered to be one of the most important advancements in the field of organic synthesis.
Sandeep R. Vemula   +2 more
doaj   +1 more source

Naphthalene-2,6-diyl bis(4-methylbenzenesulfonate)

open access: yesIUCrData, 2018
The complete molecule of the title compound, C24H20O6S2, is generated by a crystallographic inversion centre at the middle of the naphthalene ring system.
Aleksandra Piontek   +2 more
doaj   +1 more source

4-Chloronaphthalen-1-yl 4-methylbenzenesulfonate

open access: yesIUCrData, 2018
In the title compound, C17H13ClO3S, the naphthalene ring system and the benzene ring of the tosylate substituent are inclined to one another by 55.32 (5)°.
Aleksandra Piontek   +2 more
doaj   +1 more source

Pd-catalyzed formal Mizoroki–Heck coupling of unactivated alkyl chlorides

open access: yesNature Communications, 2021
The use of alkyl chlorides in Pd-catalyzed Mizoroki–Heck coupling reactions remains an unsolved problem despite their significant synthetic potential. Here, the authors show that alkyl chlorides can efficiently participate in Mizoroki–Heck cross-coupling
Geun Seok Lee   +2 more
doaj   +1 more source

Gap-junctional coupling between neutrophils and endothelial cells [PDF]

open access: yes, 2003
Communication between leukocytes and endothelial cells is crucial for inflammatory reactions. Paracrine cross-talk and outside-in signaling (via adhesion molecules) have been characterized as communication pathways to date.
Gloe, Torsten   +3 more
core   +1 more source

N-Vinylation of Imidazole and Benzimidazole with a Paramagnetic Vinyl Bromide

open access: yesMolbank, 2018
An N-vinylation of imidazole and benzimidazole with a paramagnetic vinyl bromide was investigated. Among the tested procedures, Pd-catalyzed reaction was the most powerful one.
Györgyi Úr   +3 more
doaj   +1 more source

Nickel-Catalyzed Kumada Cross-Coupling Reactions of Benzylic Sulfonamides

open access: yesMolecules, 2021
Herein, we report a Kumada cross-coupling reaction of benzylic sulfonamides. The scope of the transformation includes acyclic and cyclic sulfonamide precursors that cleanly produce highly substituted acyclic fragments.
Kirsten A. Hewitt   +3 more
doaj   +1 more source

Application of Nanocatalysts in C-Te Cross-Coupling Reactions: An Overview [PDF]

open access: yesChemical Review and Letters, 2018
Synthesis of organo-telluride compounds through nanoparticles catalyzed C-Te cross-coupling reactions has drawn considerable attention in the past several years. This mini review is an attempt to highlight the most important advances and contributions in
Shahram Mohammadi   +4 more
doaj   +1 more source

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