Synthesis of 2,4- and 2,5-Disubstituted Oxazoles via Metal- Catalyzed Cross-Coupling Reactions
作者:Carla M. Counceller、Chad C. Eichman、Nicolas Proust、James P. Stambuli
DOI:10.1002/adsc.201000668
日期:2011.1.10
The rapid synthesis of 2,4‐ and 2,5‐disubstituted oxazolesvia metal‐catalyzed cross‐coupling reactions is reported. The 4‐ or 5‐position of the corresponding 4‐ or 5‐halogenated 2‐butylthiooxazoles was successfully functionalized via Suzuki–Miyaura, Sonogashira and Stille cross‐coupling reactions. The 2‐position of the 2‐butylthiooxazoles obtained was further coupled to various organozinc reagents