@article{PoleschnerHeydenreichSpindleretal.1994, author = {Poleschner, Helmut and Heydenreich, Matthias and Spindler, Karla and Haufe, G.}, title = {Fluoroselenenylation of acetylenes with xenon difluoride/diorganyl diselenides and xenon difluoride/ phenylseleno trialkylsilanes}, year = {1994}, language = {en} } @article{PoleschnerHeydenreich1995, author = {Poleschner, Helmut and Heydenreich, Matthias}, title = {13C NMR chemical shifts of unbranched 2-Alkyn-1-ols, w-Alkyn-1-ols and "internal" Alkyn-1-ols}, year = {1995}, language = {en} } @article{HeydenreichPoleschnerSchilde1996, author = {Heydenreich, Matthias and Poleschner, Helmut and Schilde, Uwe}, title = {Fluoroselenenylation of Acetylenes with Xenon Difluoride-Diorganyl Diselenides : synthesis and structure elucidation of functionalized Vicinal (E)-Fluoro(organylseleno)olefins}, year = {1996}, language = {en} } @article{SchildePoleschner1996, author = {Schilde, Uwe and Poleschner, Helmut}, title = {The first structure of a vicinal (E)-Fluoroselenoolefin: (E)-(5-Fluoro-4-octen-4-yl)dimethylselenonium Picrate}, year = {1996}, language = {en} } @article{PoleschnerHeydenreich1997, author = {Poleschner, Helmut and Heydenreich, Matthias}, title = {1H and 13C NMR Spectra and One-Bond 13C,13C Coupling Constants of 2-Alken-4-yn-1-ols, (E)-2-Alken-4-yn-1-yl Acetates and (E)-2-Alken-4-yn-1-als}, year = {1997}, language = {en} } @article{PoleschnerHeydenreichSchilde2000, author = {Poleschner, Helmut and Heydenreich, Matthias and Schilde, Uwe}, title = {13C, 19F and 77Se NMR study of vicinal (E)-fluoro(organylseleno)olefins and [(E)- fluoroalkenyl]diorganylselenonium salts}, year = {2000}, abstract = {Selenides of the type R1Se-EMe3 (E = Si, Ge, Sn, Pb) react with xenon difluoride by cleavage of the Se-E bond to yield the R1Se-F intermediate and the fluorides Me3E-F, whereas the Se-C bond in PhSe-tBu (E = C) is stable against XeF2. The presence of R1Se-F intermediates is confirmed by addition to acetylenes (4-octyne, 3-hexyne). Thus, the fluoroselenenylation of acetylenes gives fluoro(organylseleno)olefins in preparative yields. In the cases of E = Si, Ge, Sn, and Pb, aryl and n-alkyl groups are suitable as the substituent R1. The X-ray crystal structural analysis of (E)-3- (p-carboxyphenylseleno)-4-fluorohex-3-ene - the first example of an uncharged fluoroselenoolefin synthesized from p- EtO2C-C6H4-Se-SnMe3, XeF2, and 3-hexyne followed by an ester hydrolysis - shows that the addition of the selenenylfluoride intermediate to the acetylene proceeds via a trans-addition, as is known for the R2Se2-XeF2 reagents.}, language = {en} }