Relay Annulation of Ammonium Ylides with Oxindole-Derived α,ß-Unsaturated Ketimines: Catalytic Construction of Spiro-polycyclic Oxindoles.
Org Lett
; 26(24): 5115-5119, 2024 Jun 21.
Article
in En
| MEDLINE
| ID: mdl-38862412
ABSTRACT
An ammonium ylide-based relay annulation was disclosed, which uses DABCO as the catalyst and oxindole-derived α,ß-unsaturated ketimines and γ-bromo-crotonates as the starting materials. This method enables the rapid assembly of a series of structurally novel spiro-polycyclic oxindoles containing a bicyclo[4.1.0]heptane moiety through simultaneous generation of three new bonds and two rings in one step under mild reaction conditions.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Org Lett
Journal subject:
BIOQUIMICA
Year:
2024
Type:
Article
Affiliation country:
China