Abstract
The bifunctional quinine-derived thiourea catalyst 14 was found to catalyze the direct amination of unprotected 3-aryl and aliphatic substituted oxindoles with di-tert-butyl azodicarboxylate (DBAD) to construct a tetrasubstituted stereogenic carbon center at the C-3 position of oxindoles in good to excellent yield and enantioselectivity.
| Original language | English |
|---|---|
| Pages (from-to) | 2945-2952 |
| Number of pages | 8 |
| Journal | Advanced Synthesis and Catalysis |
| Volume | 353 |
| Issue number | 16 |
| DOIs | |
| State | Published - Nov 2011 |
Keywords
- 3-aminooxindoles
- asymmetric catalysis
- atom efficiency
- organocatalysis
- tetrasubstituted stereogenic carbon centers