Abstract
A novel and efficient synthesis of aza-eight-membered ring-fused indolines has been developed. This process is realized by zinc-catalyzed C2 alkylation of indoles and subsequent base-promoted ring expansion of the newly formed six-membered ring with alkynes. Easily accessible starting materials, good functional group tolerance, and high atom economy make this procedure attractive.
| Original language | English |
|---|---|
| Pages (from-to) | 6532-6536 |
| Number of pages | 5 |
| Journal | Organic Letters |
| Volume | 22 |
| Issue number | 16 |
| DOIs | |
| State | Published - 21 Aug 2020 |