Abstract
A highly diastereoselective and enantioselective Cu(II)/SaBOX-catalyzed [2 + 2] cycloaddition of methylidenemalonate and multisubstituted alkenes was developed to furnish optically active cyclobutanes in high yields with >99/1 dr and up to >99% ee. By application of the newly developed method, the total synthesis of (+)-piperarborenine B was completed in eight steps from methylidenemalonate and olefin in 17% overall yield with >99/1 dr and 99% ee.
| Original language | English |
|---|---|
| Pages (from-to) | 13151-13154 |
| Number of pages | 4 |
| Journal | Journal of the American Chemical Society |
| Volume | 138 |
| Issue number | 40 |
| DOIs | |
| State | Published - 12 Oct 2016 |
| Externally published | Yes |