- BASE CLEAVAGE OF THE BENZYL-SILICON BOND IN PhCH2SiMe2(CH2)nOH (n = 2 or 3) COMPOUNDS
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The compounds PhCH2SiMe2(CH2)nOH with n = 2 or 3 are cleaved 0.75 and 95-135 times, respectively, as readily as PhCH2SiMe3 by NaOMe/MeOH at 50 deg C.The high reactivity of the compound with n = 3 may arise from intramolecular attack of the alkoxide centre
- Eaborn, Colin,Mahmoud, Foad M.S.
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- Diverse Fates of β-Silyl Radical under Manganese Catalysis: Hydrosilylation and Dehydrogenative Silylation of Alkenes
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Manganese-catalyzed hydrosilylation of alkenes has been underdeveloped for a long time. Herein, we describe a general, chemo- and regio- selective hydrosilylation of alkenes by using the Mn(CO)5Br catalyst with ample substrate scopes. Meanwhile, dehydrogenative silylation of aryl olefins can be selectively achieved upon the catalysis of dinuclear Mn2(CO)10. Mechanistic experiments revealed diverse fates of the common intermediate β-silyl radical, namely, hydrogen atom transfer (HAT) for the hydrosilylation and organometallic β-H elimination for the dehydrogenative silylation of olefins.
- Yang, Xiaoxu,Wang, Congyang
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p. 1047 - 1051
(2018/09/27)
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