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- W2950303399 abstract "Metal-catalyzed hydrosilylation of alkenes and alkynes using dimethyl(pyridyl)silane is described. The hydrosilylation of alkenes using dimethyl(2-pyridyl)silane (2-PyMe2SiH) proceeded well in the presence of a catalytic amount of RhCl(PPh3)3 with virtually complete regioselectivity. By taking advantage of the phase tag property of the 2-PyMe2Si group, hydrosilylation products were isolated in greater than 95% purity by simple acid−base extraction. Strategic catalyst recovery was also demonstrated. The hydrosilylation of alkynes using 2-PyMe2SiH proceeded with a Pt(CH2CHSiMe2)2O/P(t-Bu)3 catalyst to give alkenyldimethyl(2-pyridyl)silanes in good yield with high regioselectivity. A reactivity comparison of 2-PyMe2SiH with other related hydrosilanes (3-PyMe2SiH, 4-PyMe2SiH, and PhMe2SiH) was also performed. In the rhodium-catalyzed reaction, the reactivity order of hydrosilane was 2-PyMe2SiH ≫ 3-PyMe2SiH, 4-PyMe2SiH, PhMe2SiH, indicating a huge rate acceleration with 2-PyMe2SiH. In the platinum-catalyzed re..." @default.
- W2950303399 created "2019-06-27" @default.
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- W2950303399 date "2010-05-19" @default.
- W2950303399 modified "2023-09-23" @default.
- W2950303399 title "ChemInform Abstract: Metal-Catalyzed Hydrosilylation of Alkenes and Alkynes Using Dimethyl(pyridyl)silane." @default.
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- W2950303399 doi "https://doi.org/10.1002/chin.200238167" @default.
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