Bis(2,4,6-tri-t-butylphenyl)germylen und Bis(2,4,6-tri-t-butylphenyl)germathion: Isomerisierung durch spontane C,H-Insertion

Abstract

Bis(2,4,6-tri-t-butylphenyl)germylene ( 1), isolated as a solid from the reaction of 2,4,6-tri-t-butylphenyllithium with GeCl 2-dioxane at − 10°C, rearranges to germaindane ( 2)_by oxidative addition of a CH-function from the ortho-t-butyl groups of 1 to divalent germanium at room temperature. 1 is oxidized by elemental sulfur to give a germaindane thiol ( 4), derived from the addition of a CH-function from the ortho-t-butyl groups of an intermediate germathione (R 2GeS) ( 3) to the GeS double bond. Correlations of the new germaindane derivatives are confirmed by NMR spectroscopy including 2D methods.