Reductive Opening of Oxetanes Catalyzed by Frustrated Lewis Pairs: Unexpected Aryl Migration via Neighboring Group Participation
作者:Luning Tang、Yu Zang、Wengang Guo、Zhengyu Han、Hai Huang、Jianwei Sun
DOI:10.1021/acs.orglett.2c01088
日期:2022.5.6
B(C6F5)3 was found to catalyze an unusual double reduction of oxetanes by hydrosilane with aryl migration via neighboring group participation. Control experiments suggested that the phenonium ion serves as the key intermediate. Minor modification of this protocol also led to simple hydrosilylative opening of oxetanes.
发现B(C 6 F 5 ) 3催化氢硅烷对氧杂环丁烷的异常双重还原,其中芳基迁移通过相邻基团参与。对照实验表明铼离子是关键的中间体。该协议的微小修改也导致了氧杂环丁烷的简单氢化开环。
Gold(I)-Catalyzed Tandem C−H and C−C Activation (Cleavage)
作者:Min Jiang、Le-Ping Liu、Min Shi、Yuxue Li
DOI:10.1021/ol902593f
日期:2010.1.1
(Cyclopropylidenecyclohexyl)benzene derivatives, a kind of methylenecyclopropane (MCP) containing a cyclohexyl group, can undergo an interesting tandem intramolecular C−H and C−C bond activation through dehydrogenated rearrangement in the presence of AuPPh3Cl/AgOTf by transferring three hydrogen atoms from cyclohexane to cyclopropane, affording the corresponding biaryl derivatives in moderate to good