Abstract
Intramolecular cyclization of nitrogen-tethered alkynyl esters catalyzed by phosphazene organosuperbases P2-tBu and P4-tBu was investigated. Both acyclic and cyclic substrates underwent 5-exo-dig and 5-endo-dig cyclization. This reaction is a rare example of the intramolecular addition of enolates of simple esters to alkynes.
| Original language | English |
|---|---|
| Pages (from-to) | 10254-10256 |
| Number of pages | 3 |
| Journal | Chemical Communications |
| Volume | 49 |
| Issue number | 87 |
| DOIs | |
| Publication status | Published - 2013 Oct 8 |