Abstract
The rearrangement of 5-oxo-4-oxaspiro[2.3]hexanes (cyclopropanespiro-β-lactones) to 2(5H)-furanones and 2(3H)-furanones is shown to be a general reaction which is promoted by metal catalysts. A mechanism is proposed, involving the novel insertion of a metal species into the OCβ bond of the β-lactone ring, which explains the basic features of the reaction, including its regioselectivity.
| Original language | English |
|---|---|
| Pages (from-to) | 6737-6740 |
| Number of pages | 4 |
| Journal | Tetrahedron Letters |
| Volume | 35 |
| Issue number | 36 |
| DOIs | |
| Publication status | Published - 5 Sep 1994 |