Synthesis of tricyclononenes and tricyclononadienes containing MX3-groups (M=C, Si, Ge; X=Cl, Me)
摘要:
A series of new organoelement-substituted (Si-, Ge-) tricyclononenes and tricyclononadienes was obtained via the [2 sigma+2 sigma+2 pi]-cycloaddition reaction of the corresponding substituted ethylenes and acetylenes with quadricyclane. The chemical behavior of Si-, Ge-, Sn-containing olefins and acetylenes under the cycloaddition conditions was studied. (C) 2012 Elsevier Ltd. All rights reserved.
Primary vinylic and acetylenic germanes and stannanes, synthesized by a chemoselective reduction of the corresponding trichloro derivatives, were investigated by ab initio quantum chemical methods and photoelectron spectroscopy. In particular, the PE spectra display very well-resolved bands which show the increasing destabilizing effect of 14 group heteroatom cl-substitution of double or triple carbon-carbon bonds. (C) 1998 Elsevier Science S.A. All rights reserved.