454-57-9Relevant articles and documents
Reactions of [Cu(X)(BPEP-Ph)] (X = PF6, SbF6) with silyl compounds. Cooperative bond activation involving non-coordinating anions
Nakajima, Yumiko,Tsuchimoto, Takahiro,Chang, Yung-Hung,Takeuchi, Katsuhiko,Ozawa, Fumiyuki
, p. 2079 - 2084 (2016)
Bond activation of silyl compounds, assisted by the cooperative action of non-coordinating anions, is achieved using Cu(i) complexes coordinated with a PNP-pincer type phosphaalkene ligand, [Cu(X)(BPEP-Ph)] (X = PF6 (1a), SbF6 (1b); BPEP-Ph = 2,6-bis[1-phenyl-2-(2,4,6-tri-tert-butylphenyl)-2-phosphaethenyl]pyridine). Complexes 1a and 1b react with Me3SiCN to form Me3SiF and Cu(i) cyanide complexes of the formula [Cu(CN-EF5)(BPEP-Ph)] (E = P (2a), Sb (2b)), in which the CN ligand is associated with the EF5 group arising from EF6-. Formation of the intermediary isonitrile complex [Cu(CNSiMe3)(BPEP-Ph)]+SbF6- (3b) is confirmed by its isolation. Thus, a two-step reaction process involving coordination of Me3SiCN, followed by nucleophilic attack of SbF6- on the silicon atom of 3b is established for the conversion of 1b to 2b. Complex 1b cleaves the H-Si bond of PhMe2SiH as well. The isolation and structural identification of [Cu(BPEP-Ph)]+BArF4- (1c) (BArF4 = B{3,5-(CF3)2C6H3}4) as a rare example of a T-shaped, three-coordinated Cu(i) complex is reported.
Enhanced nucleophilic fluorination and radiofluorination of organosilanes appended with potassium-chelating leaving groups
Al-Huniti, Mohammed H.,Lu, Shuiyu,Pike, Victor W.,Lepore, Salvatore D.
, p. 48 - 52 (2014/01/23)
Here we aimed to explore the feasibility of enhancing the fluorination of organosilanes by appending potassium-chelating groups to the substrates. For this purpose, eight organosilanes were prepared in which a linear or cyclic leaving group, with putative
Selective synthesis of halosilanes from hydrosilanes and utilization for organic synthesis
Kunai, Atsutaka,Ohshita, Joji
, p. 3 - 15 (2007/10/03)
Selective synthesis of halosilanes has been examined. Various types of halosilanes and halohydrosilanes, such as R3SiX, R2SiHX, R2SiX2, RSiH2X, RSiHX2 (X=Cl, Br, F), were obtained by the reactions of the corresponding hydrosilanes with Cu(II)-based reagents selectively in high yields. This method could be also applied to the synthesis of chlorofluorosilanes and chlorohydrogermanes. On the other hand, iodo- and bromosilanes and germanes were obtained by Pd- or Ni-catalyzed hydride-halogen exchange reactions of hydrosilanes with alkyl or allyl halides. Their synthetic applications have been demonstrated by using iodo- and bromosilanes and chlorofluorosilanes.
