Enantioselective Synthesis of Biscyclopropanes Using Alkynes as Dicarbene Equivalents
作者:Chuntao Wang、Rui Wu、Kai Chen、Shifa Zhu
DOI:10.1002/anie.202305864
日期:2023.7.17
2–3 all-carbon quaternary centers were constructed with excellent stereoselectivity in one step. The method was extended to the cyclopropanation/cyclopropenation. In these processes, the functional alkyne is used as a dicarbene equivalent and 3 new rings are formed.
报道了手性Rh 2 (II) 催化的CF 2 H-取代的烯炔与烯烃的双环丙烷化反应。一步构建了具有4-5个邻位立体中心和2-3个全碳季中心的双环丙烷,具有良好的立体选择性。该方法扩展到环丙烷化/环丙烯化。在这些过程中,官能炔被用作二碳烯等价物,并形成 3 个新环。