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6839359 
Journal Article 
1,2- and 1,1-Migratory Insertion Reactions of Silylated Germylene Adducts 
Walewska, M; Baumgartner, J; Marschner, C; , 
2020 
1 
Molecules
ISSN: 1420-3049 
25 
3 
686 
English 
32041130 
WOS:000515384800256 
The reactions of the PMe3 adduct of the silylated germylene [(Me3Si)3Si]2Ge: with GeCl2·dioxane were found to yield 1,1-migratory insertion products of GeCl2 into one or two Ge-Si bonds. In a related reaction, a germylene was inserted with tris(trimethylsilyl)silyl and vinyl substituents into a Ge-Cl bond of GeCl2. This was followed by intramolecular trimethylsilyl chloride elimination to another cyclic germylene PMe3 adduct. The reaction of the GeCl2 mono-insertion product (Me3Si)3SiGe:GeCl2Si(SiMe3)3 with Me3SiC≡CH gave a mixture of alkyne mono- and diinsertion products. While the reaction of a divinylgermylene with GeCl2·dioxane only results in the exchange of the dioxane of GeCl2 against the divinylgermylene as base, the reaction of [(Me3Si)3Si]2Ge: with one GeCl2·dioxane and three phenylacetylenes gives a trivinylated germane with a chlorogermylene attached to one of the vinyl units. 
Chemistry--Organic Chemistry; germylene; germanium dichloride; 1,1-insertion; 1,2-insertion; Silicon; Adducts; Germanium; Germanium chlorides; Alkynes; Insertion