Highly Enantioselective [3+2] Annulation of Cyclic Enol Silyl Ethers with Donor-Acceptor Cyclopropanes: Accessing<i>3a</i>-Hydroxy [<i>n</i>.3.0]Carbobicycles
作者:Hao Xu、Jian-Ping Qu、Saihu Liao、Hu Xiong、Yong Tang
DOI:10.1002/anie.201300032
日期:2013.4.2
bisoxazoline (BOX)/CuII catalyst. This reaction works well with cyclic enol silyl ethers of different sizes, and can be extended to dienol and benzene‐fused substrates, thus providing an effective and general access to a range of 3a‐hydroxy [n.3.0]carbobicycles which are found as a core structure in many natural products. TBDPS=tert‐butyldiphenylsilyl.
新的保险丝:使用新的双恶唑啉(BOX)/ Cu II催化剂实现了标题反应。该反应适用于不同大小的环状烯醇甲硅烷基醚,并且可以扩展至二烯醇和苯稠合的底物,从而提供有效且普遍的接触范围为3a-羟基[ n。3.0]碳双环被发现是许多天然产物的核心结构。TBDPS =叔丁基二苯基甲硅烷基。