title: 9-Thiourea Cinchona alkaloid supported on mesoporous silica as a highly enantioselective, recyclable heterogeneous asymmetric catalyst.
abstract: A readily recycled and regenerated heterogeneous catalyst of 9-thiourea epi-quinine supported on mesoporous silica exhibits enhanced enantioselectivity (up to 99.2%) in the asymmetric Friedel-Crafts reaction of imines with indoles.
authors.affiliation: Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
authors.forename: Peng
authors.initials: P
authors.lastname: Yu
authors.forename: Jing
authors.initials: J
authors.lastname: He
authors.forename: Canxiong
authors.initials: C
authors.lastname: Guo
mesh_terms: D002384:Catalysis; D002930:Cinchona Alkaloids / Q000737:chemistry*; D007097:Imines / Q000737:chemistry; D007211:Indoles / Q000737:chemistry; D011803:Quinine / Q000031:analogs & derivatives*; D012822:Silicon Dioxide / Q000737:chemistry*; D013237:Stereoisomerism; D013890:Thiourea / Q000031:analogs & derivatives* / Q000737:chemistry
chemical_list: D002930:Cinchona Alkaloids; D007097:Imines; D007211:Indoles; D012822:Silicon Dioxide; D011803:Quinine; D013890:Thiourea