82763-95-9

Upstream product

• 82763-88-0 1,1,3,4-Tetramethyl-2,3-dihydro-1H-silol-3-ol 
• 87989-46-6 tetramethyl-1,1,3,4 phenylcarbamoyl-3 silacyclopentene-4 
• 82763-90-4 1,1,3-Trimethyl-4-methylene-silolan-3-ol 
• 103697-64-9 xanthate de S-methyle du tetramethyl-1,1,3,4 silacyclopentene-4 ol-3 

Downstream Products

• 104439-72-7 Co((CH₃)4H₂C₄Si)(P(CH₃)3)3⁽¹⁺⁾*B(C₆H₅)4^(1-)=[Co((CH₃)4H₂C₄Si)(P(CH₃)3)3]B(C₆H₅)4 
• 129176-22-3 {Rh(η4-Me2C4H2SiMe2)(PPh3)2}(SbF6) 
• 129176-22-3 {Rh(η4-Me2C4H2SiMe2)(PPh3)2}(BF4) 
• 17649-59-1 dimethyl 4,5-dimethylphthalate 
• 98749-92-9 1-phenyl-1,3-dimethyl-4-methylene-silacyclopent-2-ene 
• 98749-91-8 Phenyl-1 trimethyl-1,3,4 silole 

Relevant academic research and scientific papers

A CONVENIENT SYNTHESIS OF 1,1,3,4-TETRAMETHYLSILOLE : A STABLE IVB-METALLOLE

1,1,3,4-tetramethyl-3-phenylcarbamoyl-1-silacyclopent-4-ene is found to undergo quantitative decomposition in refluxing CCl4 to regiospecifically afford 1,1,3,4-tetramethylsilole which is remarkably stable toward dimerisation, and is easily con

CHIMIE DES METALLOLES DU GROUPE IV. SYNTHESE DE METHYLSILOLES PAR THERMOLYSE D'ESTERS DE SILACYCLOPENTENE-4 OLS-3 ET COMPLEXES η4-FER TRICARBONYLES

Thermolysis of esters of silacyclopent-4-ene-3-ols Me2CH=CR-CR'(X)H2 (R,R'=H or Me; X=OC(O)NHPh, OC(S)SMe) leads to 1,1-dimethylsilole (1), 1,1,3-trimethylsilole (2) or 1,1,3,4-tetramethylsilole (3).The thermally unstable S-methylxanthates decompose involving both competitive β-C-H and β-C-Si eliminations.With N-phenylcarbamates a regioselective C-H elimination on an endocyclic carbon, leads to the expected siloles 1-3, is mainly observed.A one pot synthesis of 3, the first methylsilole stable as a monomer, from the corresponding alcohol (X=OH, R=R'=Me) and phenyl isocyanate is described. 1,1,3,4-Tetramethylgermole (4) is similarly obtained.The relative stability of the methylsiloles, their ability to form Diels-Alder dimers and to isomerize into a transoid diene, is discussed.In this respect, the strong influence of C-methyl groups on the stabilization of the tetramethylsilole, as in the case of the 1,1,3,4-tetramethylphospholium ion, is made possible.The principal characteristisc of NMR and mass spectra of methylsiloles 1-3 and those of their stable tricarbonyliron complexes are studied.