Advantages of Group 4 Metallocene Bis(trimethylsilyl)acetylene Complexes as Metallocene Sources Towards Other Synthetically used Systems
Sign Up to like & getrecommendations! Published in 2019 at "ChemistryOpen"
DOI: 10.1002/open.201900196
Abstract: Abstract Active species for synthetic and catalytic applications are formed from well defined complexes or mixtures of compounds. For group 4 metallocenes, three pathways for the formation of the reactive complex fragment [Cp′2M] are known:… read more here.
Keywords: bis trimethylsilyl; group; acetylene complexes; metallocene bis ... See more keywords
Silacyclophanones 3*. Cyclic organosilicon esters of ortho-phthalic acids
Sign Up to like & getrecommendations! Published in 2019 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-019-02592-5
Abstract: Reactions of dichlorodimethylsilane with 2,3,4,5-tetrafluorophthalic acid bis(trimethylsilyl) ether (1:1, 20°C, 24 h) without a solvent and dichloro(chloromethyl)methylsilane and dichloro(methyl)phenylsilane with bis(trimethylsilyl) ester of ortho-phthalic acid (1:1, 20°C, 168–264 h) in hexane lead to the formation… read more here.
Keywords: phthalic acids; organosilicon esters; cyclic organosilicon; bis trimethylsilyl ... See more keywords
Composite Fibers From Cellulose Solutions with Additives of Bis (Trimethylsilyl) Acetylene and Alkoxysilanes: Rheology, Structure and Properties
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DOI: 10.1007/s10692-019-10041-4
Abstract: Solid–state dissolution in N–methylmorpholine N–oxide was used to obtain solutions of mixtures derived from cellulose and various organosilicon additives, namely, tetraethoxysilane, vinyltriethoxysilane, and bis (trimethylsilyl)acetylene. Optical study of the phase composition and morphology of these… read more here.
Keywords: bis trimethylsilyl; rheology; fibers cellulose; composite fibers ... See more keywords
Alkaline-Earth Metal Bis[bis(trimethylsilyl)amide] Complexes with Weakly Coordinating 2,2,5,5-Tetramethyltetrahydrofuran Ligands.
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DOI: 10.1021/acs.inorgchem.8b02469
Abstract: The reaction of [(Me3Si)2N-Ae{μ-N(SiMe3)2}]2 with 2,2,5,5-tetramethyltetrahydrofuran in pentane yields the mononuclear complexes [(Me4thf)Ae{N(SiMe3)2}2] (Ae = Mg (1), Ca (2), Sr (3), and Ba (4)) with three-coordinate alkaline-earth metal centers. With increasing radius of the alkaline-earth… read more here.
Keywords: bis trimethylsilyl; bis; earth metal; alkaline earth ... See more keywords
Update for Reactions of Group 4 Metallocene Bis(trimethylsilyl)acetylene Complexes: A Never-Ending Story?
Sign Up to like & getrecommendations! Published in 2020 at "Organometallics"
DOI: 10.1021/acs.organomet.0c00622
Abstract: Recently reported reactions of group 4 metallocene bis(trimethylsilyl)acetylene complexes from the last two years are summarized. This could be considered as a never-ending story. A recently report... read more here.
Keywords: bis trimethylsilyl; trimethylsilyl acetylene; acetylene complexes; metallocene bis ... See more keywords
Dehalogenation of vicinal dihalo compounds by 1,1'-bis(trimethylsilyl)-1H,1'H-4,4'-bipyridinylidene for giving alkenes and alkynes in a salt-free manner.
Sign Up to like & getrecommendations! Published in 2017 at "Chemical communications"
DOI: 10.1039/c7cc07377a
Abstract: We report a transition metal-free dehalogenation of vicinal dihalo compounds by 1,1'-bis(trimethylsilyl)-1H,1'H-4,4'-bipyridinylidene (1) under mild conditions, in which trimethylsilyl halide and 4,4'-bipyridine were generated as byproducts. The synthetic protocol for this dehalogenation reaction was effective… read more here.
Keywords: vicinal dihalo; bis trimethylsilyl; dihalo compounds; trimethylsilyl bipyridinylidene ... See more keywords
Silicon-nitrogen bond formation via dealkynative coupling of amines with bis(trimethylsilyl)acetylene mediated by KHMDS.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d2cc04413g
Abstract: The catalytic synthesis of silylamines mediated by s- and p-block catalysts is largely underdeveloped. Herein, commercially available potassium bis(trimethylsilyl)amide serves as an efficient alternative to transition metal complexes. N-H/Si-C dealkynative coupling was achieved by means… read more here.
Keywords: formation via; nitrogen bond; dealkynative coupling; bis trimethylsilyl ... See more keywords
Chromium-catalyzed olefination of arylaldehydes with haloforms assisted by 2,3,5,6-tetramethyl-N,N'-bis(trimethylsilyl)-1,4-dihydropyrazine.
Sign Up to like & getrecommendations! Published in 2023 at "Chemical communications"
DOI: 10.1039/d2cc06104j
Abstract: Chromium-catalyzed olefination of arylaldehydes with haloforms was achieved using 2,3,5,6-tetramethyl-N,N'-bis(trimethylsilyl)-1,4-dihydropyrazine (1a) as an organic reducing agent, giving β-halostyrene derivatives in a trans-selective manner. The reaction required no metal powders, such as zinc and manganese, as… read more here.
Keywords: arylaldehydes haloforms; olefination arylaldehydes; chromium catalyzed; bis trimethylsilyl ... See more keywords