TY  - JOUR
A1  - Poleschner, Helmut
A1  - Heydenreich, Matthias
T1  - 13C NMR chemical shifts of unbranched 2-Alkyn-1-ols, w-Alkyn-1-ols and "internal" Alkyn-1-ols
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Poleschner, Helmut
A1  - Heydenreich, Matthias
A1  - Schilde, Uwe
T1  - 13C, 19F and 77Se NMR study of vicinal (E)-fluoro(organylseleno)olefins and [(E)- fluoroalkenyl]diorganylselenonium salts
N2  - 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.
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Poleschner, Helmut
A1  - Heydenreich, Matthias
T1  - 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
Y1  - 1997
ER  - 
TY  - JOUR
A1  - Heydenreich, Matthias
A1  - Poleschner, Helmut
A1  - Schilde, Uwe
T1  - Fluoroselenenylation of Acetylenes with Xenon Difluoride-Diorganyl Diselenides : synthesis and structure elucidation of functionalized Vicinal (E)-Fluoro(organylseleno)olefins
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Poleschner, Helmut
A1  - Heydenreich, Matthias
A1  - Spindler, Karla
A1  - Haufe, G.
T1  - Fluoroselenenylation of acetylenes with xenon difluoride/diorganyl diselenides and xenon difluoride/ phenylseleno trialkylsilanes
Y1  - 1994
ER  - 
TY  - JOUR
A1  - Schilde, Uwe
A1  - Poleschner, Helmut
T1  - The first structure of a vicinal (E)-Fluoroselenoolefin: (E)-(5-Fluoro-4-octen-4-yl)dimethylselenonium Picrate
Y1  - 1996
ER  -