Ring Enlargements VI. The Diazomethane-Carbonyl Reaction: Product Ratios from the Reactions of Diazomethane with Various Substituted 2-Phenylcyclohexanons<sup>1</sup>
作者:C. DAVID GUTSCHE、HERBERT F. STROHMAYER、JOSEPH M. CHANG
DOI:10.1021/jo01095a001
日期:1958.1
Chiral Bidentate Bis(N-Heterocyclic Carbene)-Based Palladium Complexes Bearing Carboxylate Ligands: Highly Effective Catalysts for the Enantioselective Conjugate Addition of Arylboronic Acids to Cyclic Enones
作者:Tao Zhang、Min Shi
DOI:10.1002/chem.200701982
日期:2008.4.18
Axiallychiral cis-chelated bidentate bis(N-heterocyclic carbene)-palladium(II) complexes with two weakly coordinating carboxylate ligands are effective catalysts for the asymmetric conjugate addition of arylboronicacids to cyclic enones, producing the corresponding adducts in moderate-to-high yields and with good-to-high enantioselectivities, in most cases under mild conditions.