A Facile Approach to 2-CF<sub>3</sub>-Substituted Seven-membered Oxacycles via Stereoselective Preparation and Cope Rearrangement of 2-CF<sub>3</sub>-<i>cis</i>-2,3-Bis(alkenyl)oxiranes
作者:Masaki Shimizu、Takuya Fujimoto、Xinyu Liu、Tamejiro Hiyama
DOI:10.1246/cl.2004.438
日期:2004.4
Stereoselective preparation and Cope rearrangement of 2-CF3-substituted cis-2,3-bis(alkenyl)oxiranes provides a convenient route to a diverse of 2-CF3-4,5-dihydrooxepins. The reaction sequence followed by reduction or oxidation provides 2-CF3-substituted oxepanes or oxepins, respectively.
2-CF3 取代的顺式-2,3-双(烯基)环氧乙烷的立体选择性制备和科普重排为获得多种 2-CF3-4,5- 二氢氧杂环庚烷提供了一条便捷的途径。在反应序列之后进行还原或氧化,可分别得到 2-CF3 取代的氧杂环庚烷或氧杂环庚素。