title: Silica-Supported Cationic Gold(I) Complexes as Heterogeneous Catalysts for Regio- and Enantioselective Lactonization Reactions.
abstract: An efficient method for the synthesis of heterogeneous gold catalysts has been developed. These catalysts were easily assembled from readily available silica materials and gold complexes. The heterogeneous catalysts exhibited superior reactivity in various reactions where protodeauration is the rate-limiting step. Dramatic enhancement in regio- and enantioselectivity was observed when compared to the homogeneous unsupported gold catalyst. The catalysts are easily recovered and recycled up to 11 times without loss of enantioselectivity.
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.|∥State Key Laboratory of Applied Organic Chemistry, and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
authors.forename: Xing-Zhong
authors.initials: XZ
authors.lastname: Shu
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors.forename: Son C
authors.initials: SC
authors.lastname: Nguyen
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors.forename: Ying
authors.initials: Y
authors.lastname: He
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors.forename: Fadekemi
authors.initials: F
authors.lastname: Oba
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors.forename: Qiao
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors.forename: Christian
authors.initials: C
authors.lastname: Canlas
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors.forename: Gabor A
authors.initials: GA
authors.lastname: Somorjai
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors.forename: A Paul
authors.initials: AP
authors.lastname: Alivisatos
authors.affiliation: †Department of Chemistry, University of California, Berkeley, California 94720, United States.
authors.forename: F Dean
authors.initials: FD
authors.lastname: Toste
mesh_terms: D002384:Catalysis; D002412:Cations; D006046:Gold / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D012822:Silicon Dioxide / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D002412:Cations; D007783:Lactones; D006046:Gold; D012822:Silicon Dioxide