Abstract
Sulfonamides are profoundly important in pharmaceutical design. C–N cross-coupling of sulfonamides is an effective method for fragment coupling and structure–activity relationship (SAR) mining. However, cross-coupling of the important N-arylsulfonamide pharmacophore has been notably unsuccessful. Here, we present a solution to this problem via oxidative Cu-catalysis (Chan–Lam cross-coupling). Mechanistic insight has allowed the discovery and refinement of an effective cationic Cu catalyst to facilitate the practical and scalable Chan–Lam N-arylation of primary and secondary N-arylsulfonamides at room temperature. We also demonstrate utility in the large scale synthesis of a key intermediate to a clinical hepatitis C virus treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 9560-9566 |
| Number of pages | 7 |
| Journal | ACS Catalysis |
| Volume | 8 |
| Early online date | 6 Sept 2018 |
| DOIs | |
| Publication status | E-pub ahead of print - 6 Sept 2018 |
Keywords
- Boronic acid
- Boronic ester
- Catalysis
- Chan-Lam
- Copper
- Sulfonamide