Perfluoroalkylphosphines and arsines obtained by Pd-catalyzed cross-coupling reaction with organoheteroatom stannanes
作者:Mario N. Lanteri、Roberto A. Rossi、Sandra E. Martín
DOI:10.1016/j.jorganchem.2009.06.035
日期:2009.10
organoheteroatom stannanes containing elements of the groups 15 (P, As) and 16 (Se) with perfluoroalkyl iodides (RfI) was studied. Herein, a one-pot two-step reaction to form P–Rf, As–Rf and Se–Rf bonds is reported. The stannanes n-Bu3SnZPhn (Z = P, As, Se; n = 1–2) were generated in situ by the reaction of the PhnZ− anion with n-Bu3SnCl. The cross-coupling reactions of these stannanes with RfI afforded
Palladium-catalyzed phenyl-selenylation with n-Bu3SnSePh in one-pot two-step reactions
作者:Mariana Bonaterra、Sandra E. Martín、Roberto A. Rossi
DOI:10.1016/j.tetlet.2006.03.106
日期:2006.5
We have studied the Pd-catalyzed cross-coupling reaction of a stannane derived from selenium n-Bu3SnSePh (1) with aryl and perfluoroalkyl iodides. Herein it very efficient one-pot two-step selenylation reaction to form a C-Se bond is reported. Ph2Se2 reacts with Na metal in liquid ammonia yielding PhSe- ions. To this solution n-Bu3SnCl was added to afford 1, which was introduced in the palladium-catalyzed Coupling reaction without isolation. These reactions afford functionalized diarylselenides and phenylperfluroalkyl selenides from good to high yields (38-98%). (c) 2006 Elsevier Ltd. All rights reserved.
Perfluoroalkyl-selenation of olefins has been performed by the reaction of diphenyl diselenide with sodium borohydride followed with perfluoroalkyl halides (RfX) and olefins where one electron transfer from phenylseleno anion to RfX occurs, generating perfluoroalkyl and phenylseleno radicals.