Catalysts Based on the C-H···M Weak Interaction:Synthesis,Characterization and Catalytic Application of Bis(pyrazolyl)borate Cu(I)Complexes in Carbene Insertion into Heteroatom Hydrogen Bonds

摘要

series of new copper(I)complexes [BBN(3-R1-4-R~2-5-R3-pz)2]Cu(I)(BBN=9-borabicyclo[3.3.1]nonane;pz=pyrazole)have been synthesized and fully characterized.Single crystal studies of these complexes showed weak intramolecular C-H···Cu interactions which can be assigned as agostic or anagostic interactions.Their catalytic application in carbene insertion into N-H and B-H bonds demonstrates wide substrate scope,high yields and selectivity.