Amino Acid-Derived Phosphonium Salts-Catalyzed Michael Addition of 3-Substituted Oxindoles

Thiourea-phosphonium salts from amino acids: cooperative phase-transfer catalysts in the enantioselective aza-Henry reaction

(2013) Dongdong Cao et al.   CHEMICAL COMMUNICATIONS

Efficient approach for the design of effective chiral quaternary phosphonium salts in asymmetric conjugate additions

(2013) Seiji Shirakawa et al.   Chemical Science

Chiral Phosphine Catalyzed Asymmetric Michael Addition of Oxindoles

(2012) Fangrui Zhong et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Catalytic asymmetric Mannich-type reactions of α-cyano α-sulfonyl carbanions

(2012) Kohsuke Ohmatsu et al.   CHEMICAL COMMUNICATIONS

Asymmetric Michael Addition of N-Boc-Protected Oxindoles to Nitroalkenes Catalyzed by a Chiral Secondary Amine

(2012) Chuan Wang et al.   CHEMISTRY-A EUROPEAN JOURNAL

Organocatalytic Asymmetric Conjugate Addition of 3-Monosubstituted Oxindoles to (E)-1,4-Diaryl-2-buten-1,4-diones: A Strategy for the Indirect Enantioselective Furanylation and Pyrrolylation of 3-Alkyloxindoles

(2012) Yu-Hua Liao  et al.   CHEMISTRY-A EUROPEAN JOURNAL

Enantioselective Base-Free Electrophilic Amination of Benzofuran-2(3H)-ones: Catalysis by Binol-Derived P-Spiro Quaternary Phosphonium Salts

(2011) Chuan-Le Zhu et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Transition-Metal-Mediated Routes to 3,3-Disubstituted Oxindoles through Anilide Cyclisation

(2011) Johannes E. M. N. Klein et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Highly Enantioselective Michael Addition of 3-Aryloxindoles to Phenyl Vinyl Sulfone Catalyzed by Cinchona Alkaloid-Derived Bifunctional Amine-Thiourea Catalysts Bearing Sulfonamide as Multiple Hydrogen-Bonding Donors

(2011) Mei-Xin Zhao et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Chiral 1,2,3-Triazoliums as New Cationic Organic Catalysts with Anion-Recognition Ability: Application to Asymmetric Alkylation of Oxindoles

(2011) Kohsuke Ohmatsu et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Facile Synthesis of Enantioenriched Cγ-Tetrasubstituted α-Amino Acid Derivatives via an Asymmetric Nucleophilic Addition/Protonation Cascade

(2011) Shu-Wen Duan et al.   ORGANIC LETTERS

Catalytic Asymmetric Synthesis of Oxindoles Bearing a Tetrasubstituted Stereocenter at the C-3 Position

(2010) Feng Zhou et al.   ADVANCED SYNTHESIS & CATALYSIS

Asymmetric Michael Addition Reaction of 3-Substituted Oxindoles to Nitroolefins Catalyzed by a Chiral Alkyl- Substituted Thiourea Catalyst

(2010) Xin Li et al.   ADVANCED SYNTHESIS & CATALYSIS

Asymmetric [3+2] Cycloadditions of Allenoates and Dual Activated Olefins Catalyzed by Simple Bifunctional N-Acyl Aminophosphines

(2010) Hua Xiao et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Stereocontrolled Creation of All-Carbon Quaternary Stereocenters by Organocatalytic Conjugate Addition of Oxindoles to Vinyl Sulfone

(2010) Qiang Zhu et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Highly practical amino acid and alkaloid synthesis using designer chiral phase transfer catalysts as high-performance organocatalysts

(2010) Keiji Maruoka   CHEMICAL RECORD

Asymmetric Conjugate Addition of Oxindoles to 2-Chloroacrylonitrile: A Highly Effective Organocatalytic Strategy for Simultaneous Construction of 1,3-Nonadjacent Stereocenters Leading to Chiral Pyrroloindolines

(2010) Xin Li et al.   CHEMISTRY-A EUROPEAN JOURNAL

Concise Total Syntheses of (±)-Strychnine and (±)-Akuammicine†

(2010) Gopal Sirasani et al.   JOURNAL OF ORGANIC CHEMISTRY

Highly Diastereo- and Enantioselective Michael Additions of 3-Substituted Oxindoles to Maleimides Catalyzed by Chiral Bifunctional Thiourea−Tertiary Amine

(2010) Yu-Hua Liao et al.   ORGANIC LETTERS

Phosphonium Salts as Chiral Phase-Transfer Catalysts: Asymmetric Michael and Mannich Reactions of 3-Aryloxindoles

(2009) Rongjun He et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Cinchona-based phase-transfer catalysts for asymmetric synthesis

(2009) Sang-sup Jew et al.   CHEMICAL COMMUNICATIONS

Organocatalysis—after the gold rush

(2009) Søren Bertelsen et al.   CHEMICAL SOCIETY REVIEWS

Asymmetric Iminium Ion Catalysis with a Novel Bifunctional Primary Amine Thiourea: Controlling Adjacent Quaternary and Tertiary Stereocenters

(2009) Patrizia Galzerano et al.   CHEMISTRY-A EUROPEAN JOURNAL

Enantioselective Base-Free Phase-Transfer Reaction in Water-Rich Solvent

(2009) Rongjun He et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Asymmetric Michael addition reaction of 3-substituted-N-Boc oxindoles to activated terminal alkenes catalyzed by a bifunctional tertiary-amine thiourea catalyst

(2009) Xin Li et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Asymmetric Syntheses of Oxindole and Indole Spirocyclic Alkaloid Natural Products

(2009) Barry Trost et al.   SYNTHESIS-STUTTGART

Enantioselective addition of oxindoles to aliphatic α,β-unsaturated aldehydes

(2009) Natalia Bravo et al.   TETRAHEDRON LETTERS

Binaphthyl-Modified Quaternary Phosphonium Salts as Chiral Phase-Transfer Catalysts: Asymmetric Amination of β-Keto Esters

(2008) Rongjun He et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Asymmetric Aminocatalysis-Gold Rush in Organic Chemistry

(2008) Paolo Melchiorre et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Asymmetric Organocatalysis: From Infancy to Adolescence

(2008) Alessandro Dondoni et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Site-Directed Asymmetric Quaternization of a Peptide Backbone at a C-Terminal Azlactone

(2008) Daisuke Uraguchi et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Practical Aspects of Recent Asymmetric Phase-Transfer Catalysis

(2008) Keiji Maruoka   ORGANIC PROCESS RESEARCH & DEVELOPMENT