77Se,13C and1H NMR spectra of phenylselenenylcycloalkanes, -cycloalkenes and some of their selenoxides and125Te NMR of a tellurium analogue
作者:Helmut Duddeck、Petra Wagner、Armin Biallaß
DOI:10.1002/mrc.1260290310
日期:1991.3
The 77Se, 13C and 1H NMR spectra of 46 mostly new compounds with phenylselenenyl groups attached to carbocycles and of three new corresponding selenoxides and the 125Te NMR of phenyltellurenylcyclohexane are reported. Substituent effects on the chemical shifts of these nuclei are compiled and discussed in terms of the configuration and conformation. Low-temperature NMR spectra of some cyclohexane derivatives allowed the evaluation of thermodynamic data, such as A values of the PhSe, PhSe(O) and PhTe groups.
Silicon in organic synthesis. 25. Thermolysis and desiliconation-alkylation of [1-(trimethylsilyl)cyclopropyl]ethylenes as a route to spirocyclic sesquiterpenes
作者:Leo A. Paquette、Tu Hsin Yan、Gregory J. Wells
DOI:10.1021/jo00193a031
日期:1984.9
Braga, Antonio L.; Silveira, Claudio C.; Zeni, Gilson, Journal of Chemical Research - Part S, 1996, # 4, p. 206 - 207
作者:Braga, Antonio L.、Silveira, Claudio C.、Zeni, Gilson、Severo Filho, Wolmar A.、Stefani, Helio A.
DOI:——
日期:——
Conversion of aldehydes and ketones into selenoacetals: use of tris(phenylseleno)borane and tris(methylseleno)borane