Abstract
The Pd-catalyzed 3-arylation of 2-oxindoles with aryl bromides, chlorides and triflates is found to proceed using i -Pr-BI-DIME and Me 2 -BI-DIME ligands. The mono-arylation of 3-unsubstituted oxindoles is accomplished using a Pd 2 (dba) 3 / i -Pr-BI-DIME catalyst system, and gives good yields of 3-aryloxindoles from aryl bromides and chlorides. The arylation of 3-substituted oxindoles is also possible using this catalyst/ligand system. The asymmetric arylation of 3-substituted oxindoles is accomplished using Me 2 -BI-DIME to furnish oxindoles bearing a quaternary C-3 stereocenter in enantiomeric ratios of up to 93:7.
Original language | English (US) |
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Pages (from-to) | 4435-4443 |
Number of pages | 9 |
Journal | Synthesis (Germany) |
Volume | 50 |
Issue number | 22 |
DOIs | |
State | Published - 2018 |
Keywords
- BI-DIME
- Pd catalysis
- arylation
- asymmetric
- oxindoles
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry