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

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

(2013) Seiji Shirakawa et al.   Chemical Science

A Chiral Bis(betaine) Catalyst for the Mannich Reaction of Azlactones and Aliphatic Imines

(2012) Wen-Quan Zhang et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Base-Catalyzed Direct Aldolization of α-Alkyl-α-Hydroxy Trialkyl Phosphonoacetates

(2012) Michael T. Corbett et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Bifunctional Chiral Quaternary Ammonium Salt Catalysts: A Rapidly Emerging Class of Powerful Asymmetric Catalysts

(2012) Johanna Novacek et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Highly Regio-, Diastereo-, and Enantioselective 1,6- and 1,8-Additions of Azlactones to Di- and Trienyl N-Acylpyrroles

(2012) Daisuke Uraguchi et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Chiral quaternary phosphonium salts: a new class of organocatalysts

(2012) Dieter Enders et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Highly enantioselective [4 + 2] cycloadditions of allenoates and dual activated olefins catalyzed by N-acyl aminophosphines

(2012) Hua Xiao et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

A New Family of Cinchona-Derived Bifunctional Asymmetric Phase-Transfer Catalysts: Application to the Enantio- and Diastereoselective Nitro-Mannich Reaction of Amidosulfones

(2012) Kayli M. Johnson et al.   ORGANIC LETTERS

Highly Enantioselective Nitro-Mannich Reaction Catalyzed by Cinchona Alkaloids and N-Benzotriazole Derived Ammonium Salts

(2012) Yu Wei et al.   ORGANIC LETTERS

Chiral ionic Brønsted acid–achiral Brønsted base synergistic catalysis for asymmetric sulfa-Michael addition to nitroolefins

(2012) Daisuke Uraguchi et al.   Chemical Science

Asymmetric Neutral Amination of Nitroolefins Catalyzed by Chiral Bifunctional Ammonium Salts in Water-Rich Biphasic Solvent

(2011) Lijia Wang et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Controlled Assembly of Chiral Tetraaminophosphonium Aryloxide-Arylhydroxide(s) in Solution

(2011) Daisuke Uraguchi et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

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

Asymmetric Electrophilic Fluorination Using an Anionic Chiral Phase-Transfer Catalyst

(2011) V. Rauniyar et al.   SCIENCE

A concise enantioselective synthesis of l-(−)-733,061 and (2S,3S)-methyl 3-aminopiperidine-2-carboxylate using catalytic enantioselective aza-Henry reaction as key step

(2011) Gullapalli Kumaraswamy et al.   TETRAHEDRON

Highly stereoselective catalytic conjugate addition of acyl anion equivalent to nitroolefins

(2011) Daisuke Uraguchi et al.   Chemical Science

Efficient organocatalysts derived from simple chiral acyclic amino acids in asymmetric catalysis

(2011) Zhuo Chai et al.   Catalysis Science & Technology

Asymmetric Synthesis with Silicon-Based Bulky Amino Organocatalysts

(2010) Li-Wen Xu et al.   ADVANCED SYNTHESIS & CATALYSIS

Catalytic Asymmetric Direct Henry Reaction of Ynals: Short Syntheses of (2S,3R)-(+)-Xestoaminol C and (−)-Codonopsinines

(2010) Daisuke Uraguchi et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Catalytic Asymmetric Protonation of α-Amino Acid-Derived Ketene Disilyl Acetals UsingP-Spiro Diaminodioxaphosphonium Barfates as Chiral Proton

(2010) Daisuke Uraguchi et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Recent Applications of α-Amido Sulfones as in situ Equivalents of Activated Imines for Asymmetric Catalytic Nucleophilic Addition Reactions

(2010) Biaolin Yin et al.   SYNTHESIS-STUTTGART

Catalytic asymmetric hydrophosphonylation of ynones

(2010) Daisuke Uraguchi et al.   Chemical Science

Phosphonium Salt Organocatalysis

(2009) Thomas Werner   ADVANCED SYNTHESIS & CATALYSIS

Catalysts Based on Amino Acids for Asymmetric Reactions in Water

(2009) Joanna Paradowska et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

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

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

Asymmetric catalysis with chiral primary amine-based organocatalysts

(2009) Li-Wen Xu et al.   CHEMICAL COMMUNICATIONS

Chiral bifunctional phase transfer catalysts for asymmetric fluorination of β-keto esters

(2009) Xisheng Wang et al.   CHEMICAL COMMUNICATIONS

Design of HIV-1 Protease Inhibitors with Pyrrolidinones and Oxazolidinones as Novel P1′-Ligands To Enhance Backbone-Binding Interactions with Protease: Synthesis, Biological Evaluation, and Protein−Ligand X-ray Studies∞

(2009) Arun K. Ghosh et al.   JOURNAL OF MEDICINAL CHEMISTRY

Chiral Arylaminophosphonium Barfates as a New Class of Charged Brønsted Acid for the Enantioselective Activation of Nonionic Lewis Bases

(2009) Daisuke Uraguchi et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Generation of Chiral Phosphonium Dialkyl Phosphite as a Highly ReactiveP-Nucleophile: Application to Asymmetric Hydrophosphonylation of Aldehydes

(2009) Daisuke Uraguchi et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

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

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

Chiral Organic Ion Pair Catalysts Assembled Through a Hydrogen-Bonding Network

(2009) D. Uraguchi et al.   SCIENCE

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

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

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

Chiral Tetraaminophosphonium Carboxylate-Catalyzed Direct Mannich-Type Reaction

(2008) Daisuke Uraguchi et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Asymmetric Aza-Henry Reaction Under Phase Transfer Catalysis: An Experimental and Theoretical Study

(2008) Enrique Gomez-Bengoa et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Primary amino acids: privileged catalysts in enantioselective organocatalysis

(2008) Li-Wen Xu et al.   ORGANIC & BIOMOLECULAR CHEMISTRY