Rh-Catalyzed Carboxylates Directed C-H Activation for the Synthesis of <i>ortho</i>
-Carboxylic 2-Arylethenesulfonyl Fluorides: Access to Unique Electrophiles for SuFEx Click Chemistry
A carboxylic ester directed monoselective coupling of sp2 C–H bonds with ethenesulfonyl fluoride (ESF) was achieved by using a RhIII catalyst. This protocol gives access to a class of ortho‐carboxylic‐functionalized 2‐arylethenesulfonyl fluorides. The versatile and unique properties of carboxylic groups will significantly improve the capability of using 2‐arylethenesulfonyl fluorides as covalent probes
Reusable polystyrene-supported Pd catalyst for Mizoroki–Heck reactions with extremely low amounts of supported Pd
作者:Carine Diebold、Stéphane Schweizer、Jean-Michel Becht、Claude Le Drian
DOI:10.1039/c0ob00523a
日期:——
In this communication, we report that by running MizorokiâHeck reactions of various aryl iodides in tolueneâDMF, only extremely low amounts of supported Pd (0.04 mequiv.) are required to obtain almost quantitative yields. The catalyst was reused successfully up to three times.