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Werner Massa - One of the best experts on this subject based on the ideXlab platform.
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umsetzungen von ga2br4 2 dioxan mit trimethylsilyl Methyllithium und neopentyllithium synthese und kristallstruktur von lithiumtetraalkylgallanaten iii mit li c ga brucke
Chemische Berichte, 1991Co-Authors: Karlwilhelm Klinkhammer, Marcus Layh, Werner MassaAbstract:Reactions of Ga2Br4 · 2 Dioxane with (Trimethylsilyl)Methyllithium and Neopentyllithium — Synthesis and Molecular Structure of Lithium Tetraalkylgallanates(III) with Li–C–Ga Bridges Ga2Br4 · 2 dioxane reacts with (trimethylsilyl)Methyllithium or neopentyllithium to yield in n-pentane/diethyl ether solution besides elemental gallium exclusively the disproportionation product trialkylgallane. In pure n-pentane the dioxane adducts of the corresponding lithium tetraalkylgallantes (R = CH2SiMe32; R = CH2CMe34) are formed. 2 and 4 are also synthesized by the reaction of GaBr3 with alkyl lithium in the molar ratio 1:4. The crystal structure of 2 shows a dioxane-bridged dimer and Li–C–Ga bridges with lithium probably bound by the C–H s-bonds of the central carbon atoms.
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Umsetzungen von Ga2Br4 · 2 Dioxan mit (Trimethylsilyl)Methyllithium und Neopentyllithium – Synthese und Kristallstruktur von Lithiumtetraalkylgallanaten(III) mit Li–C–Ga-Brücke
Chemische Berichte, 1991Co-Authors: Karlwilhelm Klinkhammer, Marcus Layh, Werner MassaAbstract:Reactions of Ga2Br4 · 2 Dioxane with (Trimethylsilyl)Methyllithium and Neopentyllithium — Synthesis and Molecular Structure of Lithium Tetraalkylgallanates(III) with Li–C–Ga Bridges Ga2Br4 · 2 dioxane reacts with (trimethylsilyl)Methyllithium or neopentyllithium to yield in n-pentane/diethyl ether solution besides elemental gallium exclusively the disproportionation product trialkylgallane. In pure n-pentane the dioxane adducts of the corresponding lithium tetraalkylgallantes (R = CH2SiMe32; R = CH2CMe34) are formed. 2 and 4 are also synthesized by the reaction of GaBr3 with alkyl lithium in the molar ratio 1:4. The crystal structure of 2 shows a dioxane-bridged dimer and Li–C–Ga bridges with lithium probably bound by the C–H s-bonds of the central carbon atoms.
Karlwilhelm Klinkhammer - One of the best experts on this subject based on the ideXlab platform.
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umsetzungen von ga2br4 2 dioxan mit trimethylsilyl Methyllithium und neopentyllithium synthese und kristallstruktur von lithiumtetraalkylgallanaten iii mit li c ga brucke
Chemische Berichte, 1991Co-Authors: Karlwilhelm Klinkhammer, Marcus Layh, Werner MassaAbstract:Reactions of Ga2Br4 · 2 Dioxane with (Trimethylsilyl)Methyllithium and Neopentyllithium — Synthesis and Molecular Structure of Lithium Tetraalkylgallanates(III) with Li–C–Ga Bridges Ga2Br4 · 2 dioxane reacts with (trimethylsilyl)Methyllithium or neopentyllithium to yield in n-pentane/diethyl ether solution besides elemental gallium exclusively the disproportionation product trialkylgallane. In pure n-pentane the dioxane adducts of the corresponding lithium tetraalkylgallantes (R = CH2SiMe32; R = CH2CMe34) are formed. 2 and 4 are also synthesized by the reaction of GaBr3 with alkyl lithium in the molar ratio 1:4. The crystal structure of 2 shows a dioxane-bridged dimer and Li–C–Ga bridges with lithium probably bound by the C–H s-bonds of the central carbon atoms.
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Umsetzungen von Ga2Br4 · 2 Dioxan mit (Trimethylsilyl)Methyllithium und Neopentyllithium – Synthese und Kristallstruktur von Lithiumtetraalkylgallanaten(III) mit Li–C–Ga-Brücke
Chemische Berichte, 1991Co-Authors: Karlwilhelm Klinkhammer, Marcus Layh, Werner MassaAbstract:Reactions of Ga2Br4 · 2 Dioxane with (Trimethylsilyl)Methyllithium and Neopentyllithium — Synthesis and Molecular Structure of Lithium Tetraalkylgallanates(III) with Li–C–Ga Bridges Ga2Br4 · 2 dioxane reacts with (trimethylsilyl)Methyllithium or neopentyllithium to yield in n-pentane/diethyl ether solution besides elemental gallium exclusively the disproportionation product trialkylgallane. In pure n-pentane the dioxane adducts of the corresponding lithium tetraalkylgallantes (R = CH2SiMe32; R = CH2CMe34) are formed. 2 and 4 are also synthesized by the reaction of GaBr3 with alkyl lithium in the molar ratio 1:4. The crystal structure of 2 shows a dioxane-bridged dimer and Li–C–Ga bridges with lithium probably bound by the C–H s-bonds of the central carbon atoms.
Marcus Layh - One of the best experts on this subject based on the ideXlab platform.
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umsetzungen von ga2br4 2 dioxan mit trimethylsilyl Methyllithium und neopentyllithium synthese und kristallstruktur von lithiumtetraalkylgallanaten iii mit li c ga brucke
Chemische Berichte, 1991Co-Authors: Karlwilhelm Klinkhammer, Marcus Layh, Werner MassaAbstract:Reactions of Ga2Br4 · 2 Dioxane with (Trimethylsilyl)Methyllithium and Neopentyllithium — Synthesis and Molecular Structure of Lithium Tetraalkylgallanates(III) with Li–C–Ga Bridges Ga2Br4 · 2 dioxane reacts with (trimethylsilyl)Methyllithium or neopentyllithium to yield in n-pentane/diethyl ether solution besides elemental gallium exclusively the disproportionation product trialkylgallane. In pure n-pentane the dioxane adducts of the corresponding lithium tetraalkylgallantes (R = CH2SiMe32; R = CH2CMe34) are formed. 2 and 4 are also synthesized by the reaction of GaBr3 with alkyl lithium in the molar ratio 1:4. The crystal structure of 2 shows a dioxane-bridged dimer and Li–C–Ga bridges with lithium probably bound by the C–H s-bonds of the central carbon atoms.
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Umsetzungen von Ga2Br4 · 2 Dioxan mit (Trimethylsilyl)Methyllithium und Neopentyllithium – Synthese und Kristallstruktur von Lithiumtetraalkylgallanaten(III) mit Li–C–Ga-Brücke
Chemische Berichte, 1991Co-Authors: Karlwilhelm Klinkhammer, Marcus Layh, Werner MassaAbstract:Reactions of Ga2Br4 · 2 Dioxane with (Trimethylsilyl)Methyllithium and Neopentyllithium — Synthesis and Molecular Structure of Lithium Tetraalkylgallanates(III) with Li–C–Ga Bridges Ga2Br4 · 2 dioxane reacts with (trimethylsilyl)Methyllithium or neopentyllithium to yield in n-pentane/diethyl ether solution besides elemental gallium exclusively the disproportionation product trialkylgallane. In pure n-pentane the dioxane adducts of the corresponding lithium tetraalkylgallantes (R = CH2SiMe32; R = CH2CMe34) are formed. 2 and 4 are also synthesized by the reaction of GaBr3 with alkyl lithium in the molar ratio 1:4. The crystal structure of 2 shows a dioxane-bridged dimer and Li–C–Ga bridges with lithium probably bound by the C–H s-bonds of the central carbon atoms.
N S Zefirov - One of the best experts on this subject based on the ideXlab platform.
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gem bromochlorospiropentane reactivity toward Methyllithium an unusual carbenoid rearrangement
Tetrahedron, 2010Co-Authors: Kseniya N Sedenkova, Yuri K Grishin, Elena B Averina, Tamara S Kuznetzova, N S ZefirovAbstract:A skeletal carbenoid rearrangement of the gem-bromochlorospiropentanes in the presence of Methyllithium has been studied. The synthetic and mechanistic aspects of this rearrangement as well as the influence of the halogen atom nature on the reaction pathway are discussed.
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unusual methylation reaction of gem bromofluorospiropentanes with Methyllithium
Tetrahedron, 2009Co-Authors: Elena B Averina, Kseniya N Sedenkova, Yuri K Grishin, T S Kuznetsova, Ilya S Borisov, N S ZefirovAbstract:A series of novel gem-bromofluorospiropentanes were synthesized and investigated in the reaction with Methyllithium. Either substitution of the fluorine atom for a methyl group or rearrangement into methylated cyclobutene derivatives occurred under these conditions.
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Carbenoid rearrangement in the series of substituted gem-dibromospiropentanes
Russian Journal of Organic Chemistry, 2008Co-Authors: Kseniya N Sedenkova, Yuri K Grishin, Elena B Averina, T S Kuznetsova, N S ZefirovAbstract:A series of new substituted gem -dibromospiropentanes was studied in a reaction with Methyllithium at −55...−50°C. This reaction is a carbenoid rearrangement that leads to the formation of monomeric and dimeric bromocyclobutenes and also to the products of cyclobutylidene insertion into a C-H bond of the solvent depending on the character of substituents in the dibromospiropentane fragment.
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reaction of polyspirocyclic internal gem dibromocyclopropanes with Methyllithium an unusual carbenoid rearrangement
Arkivoc, 2008Co-Authors: Elena B Averina, Kseniya N Sedenkova, Yuri K Grishin, Tamara S Kuznetzova, N S ZefirovAbstract:A skeletal rearrangement of a series of polyspiro internal gem dibromocyclopropanes in the presence of Methyllithium reagents was studied. The rearranged products of two types were obtained: substituted bromocyclobutenes (type B) and C-H insertion products (type K) resulting from the reaction of the carbenoid intermediate H with the ether solvent. The mechanism of the carbenoid rearrangement is discussed.
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reaction of 2 2 dibromotricyclo 7 1 01 9 01 3 decane with Methyllithium synthesis of bicyclo 7 1 0 decadiene 1 2 and dibromotriangulane rearrangement
Mendeleev Communications, 1999Co-Authors: Elena B Averina, Yuri K Grishin, T S Kuznetsova, Alexey N Zefirov, Alexey E Koposov, N S ZefirovAbstract:Reaction of 2,2-dibromotricyclo[7.1.01,9.01,3]decane with Methyllithium gives strained cyclic allene 1 containing an ethenylidene-cyclopropane unit in a nine-membered ring and dimer 6 resulting from a dibromotriangulane rearrangement.
Maryam Alyari - One of the best experts on this subject based on the ideXlab platform.
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A concise and efficient synthetic strategy to silyl-protected terminal alkynyl sulfides from alkyl or benzyl halides
Journal of Organometallic Chemistry, 2015Co-Authors: Kazem D. Safa, Maryam AlyariAbstract:Abstract A novel synthetic strategy to silyl-protected terminal alkynyl sulfides via reaction of lithium 2,2,2-tris(trimethylsilyl)ethanedithioate, produced by the reaction of tris(trimethylsilyl)Methyllithium with carbon disulfide, and alkyl or benzyl halides has been developed. The scope of the reaction is broad, with a variety of benzylic and aliphatic halides and products were formed in good to excellent yields.
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synthesis of thioalkyne substituted thiazolidine 2 thiones using tris tri methylsilyl Methyllithium and carbon disulfide
Synthesis, 2014Co-Authors: Kazem D. Safa, Maryam AlyariAbstract:An efficient, environmentally benign, and simple one-pot approach to the synthesis of 5-(iodomethyl)thiazolidine-2-thiones via multicomponent reaction of allylamines, carbon disulfide, and iodine under solvent-free conditions is presented. The obtained 5-(iodomethyl)thiazolidine-2-thiones were converted into silyl-protected terminal [(ethynylthio)methyl]-substituted thiazolidine-2-thiones by treatment with lithium 2,2,2-tris(trimethylsilyl)ethanedithioate, produced by the reaction of tris(trimethylsilyl)Methyllithium with carbon disulfide.
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Synthesis of Thioalkyne-Substituted Thiazolidine-2-thiones Using Tris(trimethylsilyl)Methyllithium and Carbon Disulfide
Synthesis, 2014Co-Authors: Kazem D. Safa, Maryam AlyariAbstract:An efficient, environmentally benign, and simple one-pot approach to the synthesis of 5-(iodomethyl)thiazolidine-2-thiones via multicomponent reaction of allylamines, carbon disulfide, and iodine under solvent-free conditions is presented. The obtained 5-(iodomethyl)thiazolidine-2-thiones were converted into silyl-protected terminal [(ethynylthio)methyl]-substituted thiazolidine-2-thiones by treatment with lithium 2,2,2-tris(trimethylsilyl)ethanedithioate, produced by the reaction of tris(trimethylsilyl)Methyllithium with carbon disulfide.
