68816-03-5

Upstream product

• 53421-59-3 1,1,1,3,3,3-hexamethyl-2,2-diphenyl-trigermane 
• 13891-99-1 1,1,2,2-tetraphenyl 1,2-digermane 
• 7440-23-5 sodium 
• 1613-66-7 dichlorodiphenylgermane 
• 107824-82-8 2,3-benzo-1,4,5,6,7,7-hexaphenyl-7-germanorborna-2,5-diene 
• 623-73-4 diazoacetic acid ethyl ester 
• 688-73-3 tri-n-butyl-tin hydride 
• 104284-19-7 2,2,4,5-tetraphenyl 1,3,2-dioxagermole 
• 111655-78-8 bis(trimethylsilyl)diphenylgermane 
• 591-51-5 phenyllithium 
• 100-58-3 phenylmagnesium bromide 
• 624-92-0 Dimethyldisulphide 
• 151920-23-9 1,1,2,2-tetraphenyl 1,2-digermyldilithium 
• 91-13-4 α,α'-dibromo-o-xylene 

Downstream Products

• 72998-22-2 hexaphenylcyclodigermazane 
• 84973-35-3 ((C₆H₅)2GeS)2 
• 67601-94-9 1,3-dimethyltetraphenylcyclodigermazane 
• 103-72-0 phenyl isothiocyanate 
• 74656-31-8 (C₆H₅)2Ge(OCH₃)CH₂C₆H₅ 
• 74656-33-0 (C₆H₅)2GeC(C₆H₅)H 
• 5314-27-2 (C₆H₅)2Ge(OCH₃)2 
• 74656-32-9 (C₆H₅)2Ge(OCH₃)CH₂COOC₂H₅ 
• 141-78-6 ethyl acetate 
• 103-36-6 ethyl 3-phenyl-2-propenoate 
• 3430-85-1 diphenylgermanium oxide 
• 1227476-15-4 Azobenzene 
• 538-51-2 benzylidene phenylamine 
• 3860-83-1 bis(methy1thio)diphenylgermane 

Relevant academic research and scientific papers

Low-temperature Syntheses of Polysilanes and Polygermanes in Diethyl Ether

Both soluble and insoluble polysilanes and an insoluble polygermane have been prepared in high yield and at moderate temperature from the interactions of alkylaryl-, diaryl-, and dialkyl-dichlorosilanes and diphenyldichlorogermane with sodium sand in the

Electrochemical synthesis of polygermanes

Five dialkyl-substituted and three phenyl substituted polygermanes were electrochemically synthesized. Among them, dibutyl-, dipentyl-, and dihexyl-substituted polygermanes gave the best synthetic results, i.e., relatively high yields (25-45%), high curre

Synthesis, absorption characteristics and some reactions of polygermanes

A number of high molecular weight polygermanes were prepared by an improvement on Wurtz coupling reactions of dichlorogermanes and sodium metal, and by a method using diiodogermylene and Grignard reagents (or organolithiums).Most of the polygermanes thus prepared showed a narrow molecular distribution containing molecular weights 103-104.In solution, the polygermanes showed characteristic electronic absorption bands at 300-350 nm and were strongly thermochromic for alkyl-substituted derivatives.Photolysis of the polygermanes proceeded by both contraction of the chain with loss of diorganogermylenes and homolytic scission of the germanium-germanium ? bond. Key words: Germanium; Polygermane; Photochemistry

Synthesis of Polygermanes by Ligand Substitution Polymerization of the 1,4-Dioxane Complex of Germanium Dichloride with Organolithium Compounds

Higher molecular wight polygermanes were synthesized by a ligand substitution polymerization of the 1,4-dioxane complex of germanium dichloride with organolithium compounds at a lower reaction temperature.Different from conventional Wurtz-type coupling reaction, the present polymerization gives rise much higher yields of polygermanes.

Photochemistry of aryl-substituted trigermanes. Generation and mechanism of formation of germylenes

Photochemical reactions of aryl-substituted trigermanes have studied by trapping experiments, matrix isolation, and laser flash-photolysis techniques.Photolysis of the phenylated trigermanes involved both the simple extrusion of germylenes and the formati

New (diarylgermyl)lithiums

The new (diarylgermyl)lithiums R2GeHLi (2; R = phenyl, mesityl) were prepared in good yields by hydrogermolysis reactions of tert-butyllithium in THF. The stability of compounds 2 depends on the nature of the R group and the solvent. For R = Ph, in the presence of an amine (Et3N or Et2NMe), the same reaction leads to the formation of the polygermanes H(GePh2)nH (n = 2-4). The characterization of compounds 2 by IR and 1H and 13C NMR spectroscopy and their complexation with a crown ether are also reported. They are characterized by deuterolysis and alkylation reaction (with MeI and Me2SO4). Their germylation reactions with Ge-Cl reagents constitute a convenient way for synthesizing organo-hydropolygermanes. Compounds 2 also react with acyl chlorides to give new germyl ketones, R2HGeCOR′, and the unexpectedly stable β-germyl diketone Ph2Ge(COMes)2.

Photochemistry of aryl-substituted trigermanes

The photolysis of phenyl-substituted trigermanes affords digermanes and germenylenes.Trapping experiments, matrix isolation, and laser-photolysis studies indicate that the photoreaction of these compounds involves both the extrusion of germylenes and the

Electronic absorption spectra of diorganogermylenes in matrices: Formation of diorganogermylene complexes with heteroatom-containing substrates

Diorganogermylenes were generated in hydrocarbon matrices at 77 K by the photolysis of 7-germanorbornadienes 1a-e or bis(trimethylsilyl)germanes 2a-g. The germylenes show electronic absorption bands at 420-558 nm. The germylenes react with heteroatom-containing substrates (R2O, R2S, R3P, R3N, RCl, and ROH) to form adducts, which show characteristic absorption bands at shorter wavelengths than those of germylenes.

Matrix Isolation and Ultraviolet Spectra of Germylenes

Some organogernylenes were isolated in a hydrocarbon matrix at low temperature by the photolysis of 7-germanoboradienes or bis(trimethylsilyl)germanes.The germylenes show electronic absorption bands at 420-560 nm.

DIOXA- ET DITHIAGERMOLES: SYNTHESE ET QUELQUES ASPECTS DE LEUR REACTIVITE

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.