140697-59-2Relevant academic research and scientific papers
Synthesis and Structure of New Germanium-Phosphorous Heterocycles Containing a Ge2P2-Framework
Driess, Matthias,Pritzkow, Hans,Winkler, Uwe
, p. 1541 - 1546 (2007/10/02)
Mes(tBu)GeF2 (Mes = 2,4,6-trimethylphenyl) reacts with two equivalents of (dme = dimethoxyethane) to give the 1,3,2,4-diphosphadigermetane 1 which was characterized by an X-ray structure analysis.Surprisingly, only the trans-configurated isomer (with regard to the tBu groups at germanium) is formed.In solution at 25 deg C the latter compound exists as a 1:1 mixture of cis and trans isomers (with regard to the H atoms at phosphorus).Lithiation at phosphorus with tBuLi gives the corresponding 1,3-dilithio derivative which reacts with tBuHgCl to form the 1,3-dimercurio derivative 2.Photolysis of 2 with visible light leads to 3, the first derivative of a 1,3-diphospha-2,4-digermabicyclobutane with tBu/tBu-exo,exo configuration.As another product of the photolysis the trimercurio compound 5 is isolated and characterized by an X-ray structure analysis. Key Words: 1,3,2,4-Diphosphadigermetanes, 1,3-bis(tert-butylmercurio)- / Inversion at phosphorus / 1,3-Diphospha-2,4-digermabicyclobutanes
A FACILE ROUTE TO A NEW CLASS OF SILICON- AND GERMANIUM-PHOSPHORUS COMPOUNDS: P2Si2- AND Ge2P2-BICYCLOBUTANES - SYNTHESIS AND INVERSION
Driess, Matthias
, p. 39 - 46 (2007/10/02)
A new synthesis of 1,3-diphospha-2,4-disilabicyclobutanes and of the novel 1,3-digerma-2,4-diphosphabicyclobutane derivative as well as their exo,endo -> exo,exo-isomerization are discussed.
