NMR study of the exchange reactions between allyltrialkyltin compounds and lewis acids part 1. Exchanges with boron tribromide and trifluoride and titanium …

P Harston, JL Wardell, D Marton, G Tagliavini…

Index: Harston, Paul; Wardell, James L.; Marton, Daniele; Tagliavini, Giuseppe; Smith, Peter J. Inorganica Chimica Acta, 1989 , vol. 162, p. 245 - 250

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Citation Number: 21

Abstract

Abstract Reactions between BX 3 (X= F or Br) and TiCl 4 with R 1 CH CHCH 2 SnR 3 [I, R= Me, Bu or cyclohexyl (Cy); R 1= H or Me] have been studied by NMR spectroscopy. Allyl group-bromine exchanges occur between I and BBr 3 at− 60 C; at higher temperatures (c.− 10 C) I (R= Me or Bu but not Cy) reacts further to give R 2 SnBr 2. No allyl group-fluorine exchange products were detected from the reaction between I and BF 3· Et 2 O below− 20 ...