66535-10-2Relevant academic research and scientific papers
CHEMISTRY OF ORGANOSILICON COMPOUNDS. CXXIII. NEW PHOTOCHEMICAL AND THERMAL DEGRADATION REACTIONS OF VINYLDISILANES TO VINYLSILANES THROUGH (η3-1-SILAPROPENYL)TRICARBONYLIRON COMPLEXES
Sakurai, Hideki,Kamiyama, Yoshiyasu,Nakadaira, Yasuhiro
, p. 13 - 30 (2007/10/02)
Vinyldisilanes (II) of the type R1CH=CR2SiMe2SiMe3 (a, R1 = Ph, R2 = H; b, R1 = H, R2 = Me; c, R1 = R2 = H) and (R1CH = CHSiMeR3-)2 (d, R1 = Ph, R3 = Me; e, R1 = H, R3 = Ph) undergo a novel degradation reaction to give the corresponding vinylsilanes, R1CH = CR2SiMe3 and (R1CH=CH)2SiMeR3, respectively, under photochemical or thermal conditions in the presence of a stoichiometric amount of pentacarbonyliron.Two α-styryldisilanes (IIf, CH2=CPhSiMe2SiMe3 and IIg, 2) undergo similar degradation reactions, but gave β-styryl- silanes.In the presence of additional benzophenone, IIb, IIc, and IIf gave (E)-Me3SiCH=CRSiMe2OCHPh2 (b, R = Me; c, R = H; f, R = Ph) under either photochemical or thermal conditions, but IIa gave under photochemical, or Ph2CHSiMe3 under thermal conditions as main product.Mechanisms involving η3-1-silapropenyltricarbonyliron intermediates are proposed, and indeed separately prepared (η3-1-silapropenyl)(trimethylsilyl)tricarbonyliron gave the same products under similar conditions.
