Allylic Ethers as Educts for Suzuki−Miyaura Couplings in Water at Room Temperature
摘要:
The first examples of Suzuki-Miyaura couplings of allylic ethers are reported. These can be done riot only under very mild room-temperature conditions but also in water as the only medium. The process is made possible by micellar catalysis using the designer surfactant PTS.
AbstractA one‐pot, two‐step catalytic protocol for the preparation of cinnamyl ethers from simple and readily available aryl halides, phenols and allyl chloride is reported for the first time. This simple and highly efficient palladium nanoparticles catalytic system shows good regio‐ and stereoselectivities and affords the desired products in good to high yields (49–85%) from aryl iodides. Furthermore, less reactive aryl bromides can also give the cinnamyl ethers in moderate yields (24–72%).magnified image