Palladium- and Nickel-Catalyzed Carbon-Carbon Bond Insertion Reactions with Alkylidenesilacyclopropanes.
摘要：
Palladium and nickel catalysts promoted highly selective carbon-carbon bond insertion reactions with di-tert-butyl-alkylidenesilacyclopropanes. Pd(PPh(3))(4) was demonstrated to be the optimal catalyst, allowing for a variety of carbon-carbon pi-bond insertion reactions. Depending on the nature of the carbon-carbon pi bond, the insertion reaction proceeded with either direct insertion into the carbon(sp(2))-silicon bond or with allylic transposition. Ring-substituted alkylidenesilacyclopropanes required a nickel catalyst to afford insertion products. Using Ni(cod)(2) as the carbon-carbon bond insertion catalyst, new double alkyne insertion products and alkene isomerization products were observed.
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DOI：
10.1021/om901042j
被引量：
年份：
2010
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