TY - JOUR
T1 - Synthesis and reactivity of novel bis(stannyl)silanes
AU - Bleckmann, P.
AU - Englich, U.
AU - Hermann, U.
AU - Prass, I.
AU - Ruhlandt-Senge, K.
AU - Schürmann, M.
AU - Schwittek, C.
AU - Uhlig, F.
N1 - Funding Information:
The authors thank the Deutsche Forschungsgemeinschaft and the Federal State of Northrhine Westfalia for financial support. We also thank ASV-innovative Chemie GmbH (Bitterfeld, Germany) and Sivento Chemie GmbH (Rheinfelden, Germany) for gifts of silanes. We are grateful to Prof. Dr. K. Jurkschat, the NSF (CHE 95-27899), W. M. Keck Foundation and Syracuse University for support.
PY - 1999/9
Y1 - 1999/9
N2 - Bis(stannyl)silanes of types R3Sn-SiR′2-SnR3 and R2(H)Sn-SiR′2-Sn(H)R2 with R′ being methyl, phenyl, iso-propyl or tert-butyl have been synthesized by treatment of difunctionalized diorganosilanes with alkali stannides (R = Me, 1Bu; R′ = Me, iPr; 1 - 6, 8) or with triphenyl-tin chloride and magnesium (R = Ph; R′ = Me, Ph, iPr; 7, 9). Me3Sn-SitBu2-SnMe3 4, was halogenated using SnCl4, to yield the bis(chlorostannyl)silane 11. The reaction of bis(stannyl)diorganosilanes R3SnSiR′2SnR3 with catalytic amounts of Pd(PPh3)4 resulted in unexpected rearrangements under formation of the silyldistannanes R3SnSnR2SiR′R2. These compounds undergo addition reactions with alkynes. All compounds have been identified by NMR, IR, MS and elemental analysis. Compounds 5, 6 and 7 have also been characterized by X-ray crystallography.
AB - Bis(stannyl)silanes of types R3Sn-SiR′2-SnR3 and R2(H)Sn-SiR′2-Sn(H)R2 with R′ being methyl, phenyl, iso-propyl or tert-butyl have been synthesized by treatment of difunctionalized diorganosilanes with alkali stannides (R = Me, 1Bu; R′ = Me, iPr; 1 - 6, 8) or with triphenyl-tin chloride and magnesium (R = Ph; R′ = Me, Ph, iPr; 7, 9). Me3Sn-SitBu2-SnMe3 4, was halogenated using SnCl4, to yield the bis(chlorostannyl)silane 11. The reaction of bis(stannyl)diorganosilanes R3SnSiR′2SnR3 with catalytic amounts of Pd(PPh3)4 resulted in unexpected rearrangements under formation of the silyldistannanes R3SnSnR2SiR′R2. These compounds undergo addition reactions with alkynes. All compounds have been identified by NMR, IR, MS and elemental analysis. Compounds 5, 6 and 7 have also been characterized by X-ray crystallography.
KW - Reactions with Alkynes
KW - Rearrangement
KW - Stannylsilanes
KW - X-Ray Data
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U2 - 10.1515/znb-1999-0916
DO - 10.1515/znb-1999-0916
M3 - Article
AN - SCOPUS:0000563695
SN - 0932-0776
VL - 54
SP - 1188
EP - 1196
JO - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
JF - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
IS - 9
ER -