科研之友
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摘要
The synthesis of new N,N-bidentate ligands based on a pi-deficient N-heterocyclic benzhydrylamine core is described. The corresponding air-stable palladium complexes are obtained in high yields and fully characterized by NMR spectroscopy and X-ray structure determination. These new phosphane-free catalytic systems proved efficient in the Suzuki-Miyaura reaction, enabling us to obtain biaryl products in good yields, also for reactions with o-substituted phenyl chlorides as starting materials. The effects of both electronic and steric modulations at the benzhydrylamine core on the catalytic activity are also described.
- 出版日期2008-6
