Synthesis of 1-acetyl-2-silyoxycycloheptane derivatives via highly stereoselective formal [5+2] cycloaddition reaction
作者:Mami Kudo、Fumikatsu Kondo、Hideki Maekawa、Tadashi Shimizu、Masaaki Miyashita、Keiji Tanino
DOI:10.1016/j.tetlet.2013.12.102
日期:2014.2
A stereoselective [5+2] cycloaddition reaction using a new five-carbon unit, that has a dicobalt acetylene complex moiety and an enol silyl ether moiety, was developed. In the presence of a Lewis acid, the five-carbon unit reacted with an enol triisopropylsilyl ether to give a 1-acetyl-2-silyoxycycloheptane derivative, in which the three contiguous substituents on the seven-membered ring arrange cis
开发了使用新的五碳单元的立体选择性[5 + 2]环加成反应,该单元具有二巴特尔乙炔配合物部分和烯醇甲硅烷基醚部分。在路易斯酸的存在下,五碳单元与烯醇三异丙基甲硅烷基醚反应生成1-乙酰基-2-甲硅烷氧基环庚烷衍生物,其中七元环上的三个连续取代基彼此排列成顺式。