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Functionalized tetrastannacyclobutanes, Part I |
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| Authors: | Marie-Luise Lechner Katharina Fürpaß Roland C Fischer Frank Uhlig |
| Institution: | a Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 16/IV, A-8010 Graz, Austria b Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, Rozvojova 2, CZ-165 02 Prague 6, Suchdol, Czech Republic c Institute of Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 16/IV, A-8010 Graz, Austria |
| Abstract: | The reaction of ditbutyldichlorostannane with 5 equivalents of magnesium leads to 1,1,2,2,3,3,4-hepta-tbutyl-4-(chloromagnesio)-tetrastannacyclobutane 1. A mechanism of this reaction is proposed. 1 is structurally characterized by 1D and 2D 119Sn NMR experiments. New monofunctionalised four membered cyclostannanes could be obtained by derivatisation of 1. X-Ray analysis of 1,1,2,2,3,3,4-hepta-tbutyl-4-methyl-tetrastannacyclobutane 2 and 1,1,2,2,3,3,4-hepta-tbutyl-4-chlorpropyl-tetrastannacyclobutane 5 show bent ring systems with folding angles about 157°. |
| Keywords: | Organostannanes Mono functionalised ring systems |
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