104284-23-3Relevant academic research and scientific papers
Quelques aspects de la chimie des dioxa- et dithia-germoles
Lavayssiere, H.,Satge, G. Dousse et J.
, p. 440 - 448 (2007/10/02)
Dithia- and dioxa-germoles: (X=S, O), have been prepared from diorganodihalogermanes and R'(NaS)C=C(SNa)R', 1,2-benzenedithiol, α-hydroxy ketones, R''(KO)C=C(OK)R'' or dioxastannole and by cleavage of Ge-N bonds of diorganobis(diethylamino)germanes by benzoin.The synthesis of spirobidithiagermoles is also reported.The thermal stability of dithiagermoles has been studied.Decomposition occurs mostly by a ring opening with formation of germathiones.In the presence of tertiary amines, dioxagermoles lead to germylenes and α-diketones through a ring opening.The chemical reactivity of dithia- and dioxa-germoles has been studied.Exchange reactions with dihalogenated covalent compounds occur readily leading to carbon, phosphorus and sulfur dithiole and dioxole analogs.From dichlorogermylene new stable functional cyclic germylenes are obtained and characterized.
DIOXA- ET DITHIAGERMOLES: SYNTHESE ET QUELQUES ASPECTS DE LEUR REACTIVITE
Lavayssiere, Helene,Dousse, Gabriel
, p. C17 - C22 (2007/10/02)
Synthetic methods to obtain new dioxagermoles and dithiagermoles are described.Dioxagermoles decompose to germylenes and α-diketone on thermolysis, and formation of cyclotrigermathianes (R2GeS)3 from dithiagermoles is observed at about 200 deg C via a R2Ge=S intermediate.Exchange reactions between dioxagermoles or dithiagermoles and thiophosgene give a dioxolethione and a dithiolethione, respectively.In the exchange reaction between dithia- and dioxa-germoles with GeCl2*dioxane, formation of new stable unsaturated germylenes is observed.
