Synthesis and reactivity of silicon transition metal complexes. 38. Metallo-silanols and siloxanes. 12. C5R5(OC)2(Me3P)M-Substituted silanetriols of molybdenum and tungsten (R = H, Me). Synthesis via oxofunctionalization of metallotrihydridosilanes and transformation into the multifunctionalized metallotetrasiloxane C5Me5(OC)2(Me3P)WSi(OSiMe2H)3
摘要:
The metallotrihydrosilanes C(5)R(5)(OC)(2)(Me(3)P)MSiH(3) (R = H, Me, M = Mo, W (1a-c)) are converted with dimethyldioxirane to the metallosilanetriols 2a-c. Condensation of 2c with Me(2)Si(H)Cl (3) gives access to the branched Si-H-functionalized metallotetrasiloxane 4.