Reaktionen von Trimethylsiloxychlorsilanen (Me3SiO)Me2−nPhnSiCl (n=0,1,2) mit Lithium—Bildung von Trimethylsiloxy-substituierten Silyl- und Disilanyllithiumver- bindungen sowie Di- und Trisilanen

Substituted lithiumtrimethylsiloxysilanides LiSiRR′(OSiMe3) – Investigations of their synthesis, stability and reactivity

“…Detailed reports are given on syntheses and chemical properties of aminosilyl- [23][24][25][26][27][28], alkoxysilyl- [24,29,30], allyloxysilyl- [25,31], siloxysilyl- [32,33] halogensilyl- [34][35][36][37] and mesitylthiosilyllithium compounds [38], which are stable at least at low temperatures. Nucleophilic and electrophilic behaviour, i.e.…”

“…Nucleophilic and electrophilic behaviour, i.e. silylenoid character, were experimentally proved only for the compounds [(Me 3 Si) 2 N]MePhSiLi [26], (RO) Ph 2 SiLi (R = t Bu, i Pr, Me) [24,29], (Me 3 SiO)Me 2Àn Ph n SiLi (n = 1, 2) [32] and X 2 [(Me 3 Si) 3 C]SiLi (X = Cl, Br) [37].…”

Electrochemical synthesis of symmetrical difunctional disilanes as precursors for organofunctional silanes

“…Compounds like H-(Si 2 R 4 )-H or MeO-(Si 2 R 4 )-OMe are usually made by substituent exchange starting from the appropriate 1,2-dichloro precursors [13]. Et 2 N-(Si 2 Me 4 )-NEt 2 and Me 3 SiO-(Si 2 R 4 )-OSiMe 3 can be prepared by coupling Et 2 N-SiMe 2 Cl or Me 3 SiO-SiMe 2 Cl, respectively, with Li in THF [14,15]. Due to our own experience in the electrochemical formation of silyl compounds [16] and based on a Japanese patent [17] we expected the electrochemical coupling of appropriate chlorosilanes to be a reasonable alternative.…”

Synthesis and Structural Characterization of Isomeric Bis[3,4,5,6-tetrakis(trimethylsilyl)cyclohexen-1-yl]dimethoxysilanes

“…The syntheses of polysilylated cycles from aromatic precursors have been accomplished by Birch type reductive silylation [1][2][3][4][5][6][7][8][9][10][11][12][13][14] and electrochemical silylation. [15][16][17][18][19] Although the strategy of Birch type reductive silylation has several drawbacks vs electrochemical silylation such as using metal reducing agents, and irregular yields, it has been well developed as one of useful methods for the formation of carbon-silicon bonds in both carbon and organosilicon chemistry.…”