Recent Developments in Asymmetric Phase-Transfer Reactions

Organocatalytic Asymmetric Synthesis of Trifluoromethyl-substituted Diarylpyrrolines: Enantioselective Conjugate Cyanation of β-Aryl-β-trifluoromethyl-disubstituted Enones

(2012) Hiroyuki Kawai et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Efficient Asymmetric Synthesis of a Bicyclic Amino Acid as a Core Structure of Telaprevir

(2012) Seiji Shirakawa et al.   ChemCatChem

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

(2012) Kohsuke Ohmatsu et al.   CHEMICAL COMMUNICATIONS

Partially saturated fluorinated heterocycles: diastereo- and enantioselective synthesis of β-trifluoromethyl-pyrroline carboxylates

(2012) Hiroyuki Kawai et al.   CHEMICAL COMMUNICATIONS

Phase transfer catalyzed enantioselective cyclopropanation of 4-nitro-5-styrylisoxazoles

(2012) Claudia Del Fiandra et al.   CHEMICAL COMMUNICATIONS

Preparation of Chiral Amino Esters by Asymmetric Phase-Transfer Catalyzed Alkylations of Schiff Bases in a Ball Mill

(2012) Pierrick Nun et al.   CHEMISTRY-A EUROPEAN JOURNAL

Designing Fluorinated Cinchona Alkaloids for Enantioselective Catalysis: Controlling Internal Rotation by a Fluorine-Ammonium Ion gauche Effect (φNCCF)

(2012) Eva-Maria Tanzer et al.   CHEMISTRY-A EUROPEAN JOURNAL

Asymmetric addition of a nitrogen nucleophile to an enoate in the presence of a chiral phase-transfer catalyst: A novel approach toward enantiomerically enriched protected β-amino acids

(2012) Markus Weiß et al.   HETEROATOM CHEMISTRY

Asymmetric Phase-Transfer-Catalyzed Conjugate Addition of Glycine Imine to Exocyclic α,β-Unsaturated Ketones: Construction of Polycyclic Imines Containing Three Stereocenters

(2012) Jing Nie et al.   JOURNAL OF ORGANIC CHEMISTRY

Asymmetric Fluorination of Enamides: Access to α-Fluoroimines Using an Anionic Chiral Phase-Transfer Catalyst

(2012) Robert J. Phipps et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Synthesis and evaluation of atropos dihydro-5H-dibenzazepinium halide PTCs derived from α-methylbenzylamine

(2012) Barry Lygo et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Molecular design of chiral quaternary ammonium polymers for asymmetric catalysis applications

(2012) Md. Masud Parvez et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

The direct catalytic asymmetric aldol reaction of α-substituted nitroacetates with aqueous formaldehyde under base-free neutral phase-transfer conditions

(2012) Seiji Shirakawa et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Enantioselective synthesis of bio-relevant 3,5-diaryl pyrazolines

(2012) Olivier Mahé et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Highly Enantioselective Total Synthesis of (+)-Isonitramine

(2012) Yohan Park et al.   ORGANIC LETTERS

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

New chiral phase-transfer catalysts possessing a 6,6′-bridged ring on the biphenyl unit: application to the synthesis of α,α-dialkyl-α-amino acids

(2012) Yasushi Kubota et al.   TETRAHEDRON LETTERS

Enantioselective quaternization of 4-substituted oxazol-5-(4H)-ones using recoverable Cinchona-derived dimeric ammonium salts as phase-transfer organocatalysts

(2012) Silvia Tarí et al.   TETRAHEDRON-ASYMMETRY

Asymmetric phase transfer Darzens reactions catalyzed by d-glucose- and d-mannose-based chiral crown ethers

(2012) Zsolt Rapi et al.   TETRAHEDRON-ASYMMETRY

Catalytic Asymmetric Synthesis of 3-Substituted Proline Derivatives by Using Phase-Transfer-Catalyzed Conjugate Addition

(2012) Yan Liu et al.   Asian Journal of Organic Chemistry

Phase-Transfer-Catalyzed Asymmetric Synthesis of 1,1-Disubstituted Tetrahydroisoquinolines

(2011) Seiji Shirakawa et al.   ADVANCED SYNTHESIS & CATALYSIS

Highly Enantioselective Phase-Transfer Catalytic α-Alkylation of α-tert-Butoxycarbonyllactams: Construction of β-Quaternary Chiral Pyrrolidine and Piperidine Systems

(2011) Yohan Park et al.   ADVANCED SYNTHESIS & CATALYSIS

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

Catalytic Synthesis of Nonracemic Azaproline Derivatives by Cyclization of β-Alkynyl Hydrazines under Kinetic Resolution Conditions

(2011) Pradip Maity 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

Structural Study-Guided Development of Versatile Phase-Transfer Catalysts for Asymmetric Conjugate Additions of Cyanide

(2011) Brian A. Provencher et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Catalytic Asymmetric Synthesis of Isoxazoline-N-oxides through Conjugate Addition–Cyclization under Phase-Transfer Conditions

(2011) Taichi Kano et al.   BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN

Enantiopure Triazolium Salts: Chemoenzymatic Synthesis and Applications in Organocatalysis

(2011) Nicolás Ríos-Lombardía et al.   ChemCatChem

Diastereo- and enantioselective conjugate addition of α-substituted nitroacetates to maleimides under base-free neutral phase-transfer conditions

(2011) Seiji Shirakawa et al.   CHEMICAL COMMUNICATIONS

Catalytic asymmetric syntheses of isoxazoline-N-oxides under phase-transfer conditions

(2011) Taichi Kano et al.   CHEMICAL COMMUNICATIONS

Organocatalytic trifluoromethylation of imines using phase-transfer catalysis with phenoxides. A general platform for catalytic additions of organosilanes to imines

(2011) Luca Bernardi et al.   CHEMICAL COMMUNICATIONS

Phase-transfer-catalyzed Asymmetric Alkylation with Epoxy Triflates as Alkylating Agents: Highly Stereoselective Synthesis of γ,δ-Epoxy-α-amino Acids

(2011) Satoru Arimitsu et al.   CHEMISTRY LETTERS

Catalytic Asymmetric Hydrolysis: Asymmetric Hydrolytic Protonation of Enol Esters Catalyzed by Phase-Transfer Catalysts

(2011) Eiji Yamamoto et al.   CHEMISTRY-A EUROPEAN JOURNAL

Deconstructing Quinine. Part 1. Toward an Understanding of the Remarkable Performance of Cinchona Alkaloids in Asymmetric Phase Transfer Catalysis

(2011) Scott E. Denmark   HETEROCYCLES

Confirmation of Molecular Planarity Disruption Effect on Aqueous Solubility Improvement of β-Naphthoflavone Analogs

(2011) Minoru Ishikawa et al.   HETEROCYCLES

A Systematic Investigation of Quaternary Ammonium Ions as Asymmetric Phase-Transfer Catalysts. Synthesis of Catalyst Libraries and Evaluation of Catalyst Activity

(2011) Scott E. Denmark et al.   JOURNAL OF ORGANIC CHEMISTRY

Diastereoselective Aziridination of Chiral Electron-Deficient Olefins withN-Chloro-N-sodiocarbamates Catalyzed by Chiral Quaternary Ammonium Salts

(2011) Yuta Murakami et al.   JOURNAL OF ORGANIC CHEMISTRY

A Systematic Investigation of Quaternary Ammonium Ions as Asymmetric Phase-Transfer Catalysts. Application of Quantitative Structure Activity/Selectivity Relationships

(2011) Scott E. Denmark et al.   JOURNAL OF ORGANIC CHEMISTRY

Highly Regio- and Diastereoselective Anionic [3 + 2] Cycloaddition under Phase Transfer Catalytic Conditions

(2011) Vincent Gembus et al.   JOURNAL OF ORGANIC CHEMISTRY

Asymmetric Organocatalytic Monofluorovinylations

(2011) Christian Borch Jacobsen et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Highly Enantioselective Synthesis of α,α-Dialkylmalonates by Phase-Transfer Catalytic Desymmetrization

(2011) Suckchang Hong et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Pentanidium-Catalyzed Enantioselective Phase-Transfer Conjugate Addition Reactions

(2011) Ting Ma et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Catalytic Asymmetric Synthesis of Axially Chiral o-Iodoanilides by Phase-Transfer Catalyzed Alkylations

(2011) Seiji Shirakawa et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

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

Design, synthesis, and application of tartaric acid derived N-spiroquaternary ammonium salts as chiral phase-transfer catalysts

(2011) Mario Waser et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Cumyl Ester as the C-Terminal Protecting Group in the Enantioselective Alkylation of Glycine Benzophenone Imine

(2011) Tomasz Respondek et al.   ORGANIC LETTERS

Organocatalytic Asymmetric Synthesis of Sulfoxides from Sulfenic Acid Anions Mediated by aCinchona-Derived Phase-Transfer Reagent

(2011) Fabien Gelat et al.   ORGANIC LETTERS

Asymmetric Electrophilic Fluorination Using an Anionic Chiral Phase-Transfer Catalyst

(2011) V. Rauniyar et al.   SCIENCE

Asymmetric C–C bond formation via Darzens condensation and Michael addition using monosaccharide-based chiral crown ethers

(2011) Péter Bakó et al.   TETRAHEDRON LETTERS

BINOL-based azacrown ether catalyzed enantioselective Michael addition: asymmetric synthesis of α-aminophosphonates

(2011) Truong Son Pham et al.   TETRAHEDRON-ASYMMETRY

Enantioselective synthesis of heteroaromatic epoxyketones under phase-transfer catalysis using d-glucose- and d-mannose-based crown ethers

(2011) Zsolt Rapi et al.   TETRAHEDRON-ASYMMETRY

Highly enantioselective asymmetric Darzens reactions with a phase transfer catalyst

(2011) Yan Liu et al.   Chemical Science

Catalytic enantioselective electrocyclic cascades

(2011) Eleanor E. Maciver et al.   Chemical Science

Asymmetric Alkylation of Malonic Diester Under Phase-Transfer Conditions

(2011) Takuya Kanemitsu et al.   ACS Catalysis

Phase-Transfer-Catalyzed Olefin Isomerization/α-Alkylation of α-Alkynylcrotonates as a Route for 1,4-Enynes

(2010) Takuya Hashimoto et al.   ADVANCED SYNTHESIS & CATALYSIS

Reversal of Enantioselectivity by Tuning the Conformational Flexibility of Phase-Transfer Catalysts

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

Enantioselective Synthesis of Trifluoromethyl-Substituted 2-Isoxazolines: Asymmetric Hydroxylamine/Enone Cascade Reaction

(2010) Kazutaka Matoba et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Enantioselective Phase-Transfer Catalysis: Synthesis of Pyrazolines

(2010) Olivier Mahé et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Development of 5-silylethynyl-1,3-dioxolan-4-one as a new prochiral template for asymmetric phase-transfer catalysis

(2010) Takuya Hashimoto et al.   CHEMICAL COMMUNICATIONS

A powerful synergistic effect for highly efficient diastereo- and enantioselective phase-transfer catalyzed conjugate additions

(2010) Ming-Qing Hua et al.   CHEMICAL COMMUNICATIONS

Catalytic asymmetric synthesis of 1,1-disubstituted tetrahydro-β-carbolines by phase-transfer catalyzed alkylations

(2010) Seiji Shirakawa et al.   CHEMICAL COMMUNICATIONS

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

(2010) Keiji Maruoka   CHEMICAL RECORD

Asymmetric Phase-Transfer-Catalyzed Intramolecular N-Alkylation of Indoles and Pyrroles: A Combined Experimental and Theoretical Investigation

(2010) Marco Bandini et al.   CHEMISTRY-A EUROPEAN JOURNAL

Phase-Transfer-Catalyzed Asymmetric Alkylation of α-Benzoyloxy-β-keto Esters: Stereoselective Construction of Congested 2,3-Dihydroxycarboxylic Acid Esters

(2010) Takuya Hashimoto et al.   Chemistry-An Asian Journal

Asymmetric Direct α-Hydroxylation of β-Oxo Esters by Phase-Transfer Catalysis Using Chiral Quaternary Ammonium Salts

(2010) Mingming Lian et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Catalytic Enantioselective Mannich-Type Reaction with β-Phenyl Sulfonyl Acetonitrile

(2010) Pedro B. González et al.   JOURNAL OF ORGANIC CHEMISTRY

An Enantioselective Synthesis of (+)-Polyoxamic Acid via Phase-Transfer Catalytic Conjugate Addition and Asymmetric Dihydroxylation

(2010) Yeon-Ju Lee et al.   JOURNAL OF ORGANIC CHEMISTRY

Catalytic Enantioselective Alkylative Dearomatization−Annulation: Total Synthesis and Absolute Configuration Assignment of Hyperibone K

(2010) Ji Qi et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Enantioselective Synthesis of Planar Chiral Organonitrogen Cycles

(2010) Katsuhiko Tomooka et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Catalytic Carbon−Carbon Bond-Forming Reactions of Aminoalkane Derivatives with Imines

(2010) Yi-Jing Chen et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Main-Chain Ionic Chiral Polymers: Synthesis of Optically Active Quaternary Ammonium Sulfonate Polymers and Their Application in Asymmetric Catalysis

(2010) Shinichi Itsuno et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Improved design of inherently chiral calix[4]arenes as organocatalysts

(2010) Seiji Shirakawa et al.   NEW JOURNAL OF CHEMISTRY

Synthesis of (−)-Paroxetine via Enantioselective Phase-Transfer Catalytic Monoalkylation of Malonamide Ester

(2010) Mi-hyun Kim et al.   ORGANIC LETTERS

Synthesis of 1,2,4-Triazolines: Base-Catalyzed Hydrazination/Cyclization Cascade of α-Isocyano Esters and Amides

(2010) David Monge et al.   ORGANIC LETTERS

Phase-Transfer Catalyzed Asymmetric Conjugate Additions of β-Ketoesters to Acetylenic Ketones

(2010) Quan Lan et al.   ORGANIC PROCESS RESEARCH & DEVELOPMENT

Enantioselective Synthesis of (1R,2S)-1-Amino-2-vinylcyclopropanecarboxylic Acid Ethyl Ester (Vinyl-ACCA-OEt) by Asymmetric Phase-Transfer Catalyzed Cyclopropanation of (E)-N-Phenylmethyleneglycine Ethyl Ester

(2010) Kevin M. Belyk et al.   ORGANIC PROCESS RESEARCH & DEVELOPMENT

One-Pot Synthesis of Optically Active β-Amino-α-methylene Carbonyl Derivatives From α-Amidosulfones Using Quinine-Based Phase-Transfer Catalysts

(2010) Stefano Mazzotta et al.   ORGANIC PROCESS RESEARCH & DEVELOPMENT

Enantioselective Synthesis of α-Benzylalanine Using trans-3,4-Dihydro-3,4-diaryldibenzo[c,g]phenanthrene-3,4-diols

(2010) Mitsuru Kitamura et al.   SYNLETT

Enantioselective synthesis of (S)-4-methyleneglutamic acid via tandem conjugate addition–elimination under phase-transfer catalytic conditions

(2010) Sukhoon Kang et al.   TETRAHEDRON

Application of asymmetric phase-transfer catalysis in the enantioselective synthesis of cis-5-substituted proline esters

(2010) Barry Lygo et al.   TETRAHEDRON

Catalytic asymmetric synthesis of cyclic α-alkyl-amino acid derivatives by C,N-double alkylation

(2010) Taichi Kano et al.   TETRAHEDRON

Synthesis of (αR,βS)-epoxyketones by asymmetric epoxidation of chalcones with cinchona phase-transfer catalysts

(2010) Mi-Sook Yoo et al.   TETRAHEDRON LETTERS

Asymmetric epoxidation of substituted chalcones and chalcone analogues catalyzed by α-d-glucose- and α-d-mannose-based crown ethers

(2010) Attila Makó et al.   TETRAHEDRON-ASYMMETRY

Catalytic asymmetric synthesis of cyclic amino acids and alkaloid derivatives: application to (+)-dihydropinidine and Selfotel synthesis

(2010) Taichi Kano et al.   Chemical Science

Asymmetric Synthesis of α,β-Diaminophosphonic Acid Derivatives with a Catalytic Enantioselective Mannich Reaction

(2009) Robert Djiokeng Momo et al.   ADVANCED SYNTHESIS & CATALYSIS

Catalytic Asymmetric Mannich Reactions of Sulfonylacetates

(2009) Carlo Cassani et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Catalytic Enantioselective Trifluoromethylation of Azomethine Imines with Trimethyl(trifluoromethyl)silane

(2009) Hiroyuki Kawai et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

α-Chiral Acetylenes Having an All-Carbon Quaternary Center: Phase Transfer Catalyzed Enantioselective α Alkylation of α-Alkyl-α-alkynyl Esters

(2009) Takuya Hashimoto et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Catalytic Asymmetric Conjugate Addition of Nitroalkanes to 4-Nitro-5-styrylisoxazoles

(2009) Andrea Baschieri et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Catalytic Asymmetric 6π Electrocyclization: Enantioselective Synthesis of Functionalized Indolines

(2009) Eleanor E. Maciver et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Catalytic Enantio- and Diastereoselective Alkylations with Cyclic Sulfamidates

(2009) Thomas A. Moss 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

Catalytic asymmetric synthesis of cyclic α-alkyl-amino acid derivatives having a tetrasubstituted α-carbon

(2009) Yong-Gang Wang et al.   BIOORGANIC & MEDICINAL CHEMISTRY LETTERS

The highly enantioselective phase-transfer catalytic mono-alkylation of malonamic esters

(2009) Mi-hyun Kim et al.   CHEMICAL COMMUNICATIONS

Cinchona-based phase-transfer catalysts for asymmetric synthesis

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

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

(2009) Xisheng Wang et al.   CHEMICAL COMMUNICATIONS

Designing Chiral Quaternary Ammonium Polymers: Novel Type of Polymeric Catalyst for Asymmetric Alkylation Reaction

(2009) Shinichi Itsuno et al.   CHEMISTRY LETTERS

Synthesis of an Inherently Chiral Calix[4]arene Amino Acid and Its Derivatives: Their Application to Asymmetric Reactions as Organocatalysts

(2009) Seiji Shirakawa et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

Synthetic Studies on (−)-Lemonomycin: An Efficient Asymmetric Synthesis of Lemonomycinone Amide

(2009) Yan-Chao Wu et al.   JOURNAL OF ORGANIC CHEMISTRY

Organocatalytic Asymmetric Formal [3 + 2] Cycloaddition with in Situ-GeneratedN-Carbamoyl Nitrones

(2009) Claudio Gioia 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

Catalytic Asymmetric Alkylation of Substituted Isoflavanones

(2009) Antoinette E. Nibbs et al.   ORGANIC LETTERS

Highly Enantioselective Synthesis of (S)-α-Alkyl-α,β-diaminopropionic Acids via Asymmetric Phase-Transfer Catalytic Alkylation of 2-Phenyl-2-imidazoline-4-carboxylic Acidtert-Butyl Esters

(2009) Yohan Park et al.   ORGANIC LETTERS

Rate Enhancement of Phase Transfer Catalyzed Conjugate Additions by CsCl

(2009) Taichi Kano et al.   ORGANIC LETTERS

Organocatalytic Approach to Enantioselective One-Pot Synthesis of Pyrrolidine, Hexahydropyrrolizine, and Octahydroindolizine Core Structures

(2009) Yong-Gang Wang et al.   ORGANIC LETTERS

Synthesis and Evaluation of Chiral Dibenzazepinium Halide Phase-Transfer Catalysts

(2009) Barry Lygo et al.   SYNLETT

Asymmetric Synthesis of Substituted α-Amino Phosphonates with Chiral Crown Ethers as Catalysts

(2009) Zsuzsa Jászay et al.   SYNLETT

Phase-transfer catalyzed asymmetric arylacetate alkylation

(2009) Merritt B. Andrus et al.   TETRAHEDRON LETTERS

Highly efficient asymmetric amination of β-keto esters catalyzed by chiral quaternary ammonium bromides

(2009) Quan Lan et al.   TETRAHEDRON LETTERS

Co-catalyst enhancement of enantioselective PTC Michael additions involving glycine imines

(2009) Barry Lygo et al.   TETRAHEDRON LETTERS

Enantioselective cyanoformylation of aldehydes organocatalyzed by recyclable cinchonidine ammonium salts

(2009) Rafael Chinchilla et al.   TETRAHEDRON-ASYMMETRY

Catalytic asymmetric alkylation of α-cyanocarboxylates and acetoacetates using a phase-transfer catalyst

(2009) Kazuhiro Nagata et al.   TETRAHEDRON-ASYMMETRY

Enantioselective Michael reaction of β-keto esters organocatalyzed by recoverable Cinchona-derived dimeric ammonium salts

(2009) Silvia Tarí et al.   TETRAHEDRON-ASYMMETRY

Enantioselective Phase-Transfer-Catalyzed Intramolecular Aza-Michael Reaction: Effective Route to Pyrazino-Indole Compounds

(2008) Marco Bandini et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

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

Catalytic Enantioselective Michael Addition of 1-Fluorobis(phenylsulfonyl)methane to α,β-Unsaturated Ketones Catalyzed by Cinchona Alkaloids

(2008) Tatsuya Furukawa et al.   ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

An Immobilization Method of Chiral Quaternary Ammonium Salts onto Polymer Supports

(2008) Yukihiro Arakawa 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

Catalytic aziridination of electron-deficient olefins with an N-chloro-N-sodio carbamate and application of this novel method to asymmetric synthesis

(2008) Satoshi Minakata et al.   CHEMICAL COMMUNICATIONS

An easy entry to optically active α-amino phosphonic acid derivatives using phase-transfer catalysis (PTC)

(2008) Francesco Fini et al.   CHEMICAL COMMUNICATIONS

Electronically Modified Polymer-supported Cinchona Phase-transfer Catalysts for Asymmetric Synthesis of α-Alkyl-α-amino Acid Derivatives

(2008) Qinghua Shi et al.   CHEMISTRY LETTERS

Combinatorial Design of Simplified High-Performance Chiral Phase-Transfer Catalysts for Practical Asymmetric Synthesis of α-Alkyl- and α,α-Dialkyl-α-Amino Acids

(2008) Masanori Kitamura et al.   Chemistry-An Asian Journal

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

Enantio- and Diastereoselective Catalytic Alkylation Reactions with Aziridines

(2008) Thomas A. Moss et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Organocatalytic Asymmetric Conjugate Addition to Allenic Esters and Ketones

(2008) Petteri Elsner et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Organocatalytic asymmetric ring-opening of aziridines

(2008) Márcio W. Paixão et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Catalytic Asymmetric Hydroxylation of Oxindoles by Molecular Oxygen Using a Phase-Transfer Catalyst

(2008) Daisuke Sano et al.   ORGANIC LETTERS

Practical Aspects of Recent Asymmetric Phase-Transfer Catalysis

(2008) Keiji Maruoka   ORGANIC PROCESS RESEARCH & DEVELOPMENT

Combinatorial approach for the design of new, simplified chiral phase-transfer catalysts with high catalytic performance for practical asymmetric synthesis of α-alkyl-α-amino acids

(2008) Masanori Kitamura et al.   TETRAHEDRON LETTERS

Practical asymmetric synthesis of α-methylserine derivatives under mild phase-transfer conditions

(2008) Keiji Nakayama et al.   TETRAHEDRON LETTERS

Calixarene-based chiral phase-transfer catalysts derived from cinchona alkaloids for enantioselective synthesis of α-amino acids

(2008) Selahattin Bozkurt et al.   TETRAHEDRON-ASYMMETRY

Enantioselective cyanoformylation of aldehydes using a recyclable dimeric cinchonidine ammonium salt as an organocatalyst

(2008) Rafael Chinchilla et al.   TETRAHEDRON-ASYMMETRY

Development of a Phase Transfer Catalyzed Asymmetric Synthesis for an Estrogen Receptor Beta Selective Agonist

(2007) Jeremy P. Scott et al.   ORGANIC PROCESS RESEARCH & DEVELOPMENT

Phase-transfer catalyzed glycolate conjugate addition

(2007) Merritt B. Andrus et al.   TETRAHEDRON LETTERS

Highly efficient polymer supported phase-transfer catalysts containing hydrogen bond inducing functional groups

(2007) Qinghua Shi et al.   TETRAHEDRON LETTERS