14271-99-9Relevant articles and documents
Palladium-Catalyzed Silylation of Aryl Chlorides with Bulky Dialkoxydisilanes
Fukui, Keitaro,Saito, Hayate,Shimokawa, Jun,Yorimitsu, Hideki
, p. 1328 - 1332 (2020)
Arylsilanes bearing a bulky alkoxy group on the silicon were synthesized from aryl chlorides and dialkoxydisilanes under reaction conditions utilizing SingaCycle-A3 as a palladium precatalyst and lithium benzoate in wet DMA. This report proposes the first direct and catalytic method for introducing tert -butoxy- or 1-adamantyloxysilyl groups onto various aryl moieties through the silylation reaction.
Heterobimetallic complexes composed of bismuth and lithium carboxylates as polyurethane catalysts - alternatives to organotin compounds
Levent, Emre,Sala, Oliver,Wilm, Lukas F. B.,L?we, Pawel,Dielmann, Fabian
, p. 2747 - 2755 (2021)
Organotin compounds are important catalysts for the synthesis of polyurethanes consisting of aliphatic isocyanates and polyols. Due to their toxicity, however, it has been a long-standing goal to develop more environmentally benign catalysts. Bismuth octoates and neodecanoates are such well-known alternatives, but their catalytic activity is insufficient for many applications. Herein we show that the catalytic activity of bismuth carboxylates can be enhanced significantly by the addition of lithium carboxylates. Structural and spectroscopic results reveal the spontaneous formation of heterobimetallic complexes consisting of two bismuth and four lithium carboxylates that show dynamic behaviour in solution. The mechanism of the bismuth-catalyzed urethane reaction was elucidated in detail using quantum chemical calculations, paving the way for a rational catalyst design.
Synthesis and Structure of New Polymeric Lithium Pivalates
Bazhina, E. S.,Eremenko, I. L.,Gogoleva, N. V.,Kiskin, M. A.,Lutsenko, I. A.,Nikolaevskii, S. A.,Sidorov, A. A.,Yambulatov, D. S.,Zorina-Tikhonova, E. N.
, (2020)
Abstract: Data on the synthesis and study of the crystal structure of [Li10(Piv)10(MeCN)2]n (I) and [Li6(Piv)6(MeCN)2]n (II) are presented. According to X-ray diffract
Chemical assembly of the heteronuclear pivalate complex with the LiI and FeIII ions
Lutsenko,Kiskin,Alexandrov,Imshennik,Maksimov, Yu. V.,Khoroshilov,Goloveshkin,Sidorov,Eremenko
, p. 449 - 454 (2018)
The heteronuclear complex [Fe4Li2(O)2(Piv)10(H2O)2] (1, Piv is the pivalic acid anion) was obtained by refluxing FeIII pivalates with LiI pivalates in toluene and isolated as the 1?PhCH3 solvate with a toluene molecule. According to X-ray diffraction data, complex 1 contains the {Fe4Li2O2} core. The M?ssbauer spectroscopy data indicate that the core comprises para magnetic FeIII ions in the high-spin state located in the symmetric octahedral environment of oxygen atoms. Thermolysis of 1 studied by simultaneous thermal analysis demonstrated thermal stability of the complex up to 225 °С. The main end product of thermolysis at 600 °С is the mixed oxide LiFe5O8.
Thermodynamic Characteristics of Lithium Pivalate according to High-Temperature Mass Spectrometry Data
Alikhanyan, A. S.,Kayumova, D. B.,Kiskin, M. A.,Malkerova, I. P.
, p. 868 - 873 (2021/07/30)
Abstract: The vaporization of lithium pivalate (CH3)3CCOOLi (LiPiv) was studied by the Knudsen effusion method with the mass spectral analysis of the gas phase. The saturated vapor consisted of polynuclear molecules (LiPiv)n/su
ORGANOZINC COMPLEXES AND PROCESSES FOR MAKING AND USING THE SAME
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Page/Page column 27, (2012/07/13)
Processes for making an organozinc reagents are disclosed comprising reacting (A) organomagnesium or organozinc complexes with (B) at least one coordination compound comprising one or more carboxylate groups and/or alcoholate groups and/or tertiary amine groups, optionally in combination with zinc ions and/or lithium ions and/or halide ions, wherein the halide ions are selected from chloride, bromide and iodide, the organozinc complex comprises an aryl group, a heteroaryl group or a benzyl group when the coordinating compound is a chelating polyamine, and the reaction is conducted in the presence of zinc complexed with at least one coordinating compound when reactant (A) comprises at least one organomagnesium complex. The resulting organozinc reagents may optionally be isolated from solvents to obtain a solid reagent. The reagents may be used for making organic compounds via Negishi cross-coupling reactions or via aldehyde and/or ketone oxidative addition reactions. The organozinc reagents are stable and, due to their high selectivity, permit maintenance of sensitive functional groups such as aldehydes during cross-coupling.
