93100-78-8Relevant articles and documents
Organoboration of Alkylstannanes, XIV. Organoboration of Bis(alkynyl)stannanes: Mechanism and Application of 119Sn NMR Spectroscopy
Kerschl, Susanna,Wrackmeyer, Bernd
, p. 1037 - 1041 (2007/10/02)
Dimethylbis(phenylethynyl)stannane (1) reacts with trialkylboranes, BR3 (2), to give bis(alkenyl)stannanes (5) (R = C2H5), 1-bora-4-stanna-2,5-cyclohexadienes (6) (R = C2H5, C3H7i), 1-stanna-2,4-cyclopentadienes (7) (R = C2H5) and 1-stanna-3-cyclopentenes (8) (R = CH3, C2H5). 13C and 119Sn NMR data prove the structure of the reaction products (5 to 8). 119Sn NMR is useful (i) for following the course of the reaction (mechanism!) and (ii) for quantitative analysis of the product distribution.Deorganoboration reactions play an important role in the formation of the various heterocyclic systems. - Keywords: Alkynylstannanes, Organoboration, Mechanism, 119Sn NMR Spectra, 13C NMR Spectra