Asymmetric Synthesis of Dihydrocoumarins Containing Contiguous Quaternary and Tertiary Stereogenic Centers Catalyzed by aCinchona-Alkaloid-Based Bifunctional Thiourea Derivative

N-Heterocyclic carbene-catalyzed enantioselective annulations: a dual activation strategy for a formal [4+2] addition for dihydrocoumarins

(2015) Anna Lee et al.   CHEMICAL COMMUNICATIONS

Organocatalytic regioselective asymmetric Michael addition of azlactones to o-hydroxy chalcone derivatives

(2015) Shao-Yun Zhang et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Enantioselective Synthesis of Chromanones via a Peptidic Phosphane Catalyzed Rauhut–Currier Reaction

(2015) Robert J. H. Scanes et al.   ORGANIC LETTERS

Diastereoselectivity in prebiotically relevant 5(4H)-oxazolone-mediated peptide couplings

(2014) Damien Beaufils et al.   CHEMICAL COMMUNICATIONS

An efficient strategy for the synthesis of polysubstituted chromeno[4,3-b]pyrrolidine derivatives

(2014) Li Tian et al.   CHEMICAL COMMUNICATIONS

Highly Enantioselective Organocatalytic α-Sulfenylation of Azlactones

(2014) Baokun Qiao et al.   ORGANIC LETTERS

Organocatalytic Route to Dihydrocoumarins and Dihydroquinolinones in All Stereochemical Configurations

(2014) Oliver D. Engl et al.   ORGANIC LETTERS

Brønsted Acid Accelerated Pd-Catalyzed Direct Asymmetric Allylic Alkylation of Azlactones with Simple Allylic Alcohols: A Practical Access to Quaternary Allylic Amino Acid Derivatives

(2014) Hui Zhou et al.   ORGANIC LETTERS

Highly enantioselective α-sulfenylation of 5H-oxazol-4-ones to N-(sulfanyl)succinimides

(2014) Mei Xu et al.   TETRAHEDRON

Palladium catalyzed direct allylation of azlactones with simple allylic alcohols in the absence of any activators

(2014) Hui Zhou et al.   RSC Advances

Kinetic resolution of 4-substituted-3,4-dihydrocoumarins via Pd-catalyzed asymmetric allylic alkylation reaction: enantioselective synthesis of trans-3,4-disubstituted-3,4-dihydrocoumarins

(2014) Xiao-Hui Li et al.   Organic Chemistry Frontiers

Enantioselective synthesis of 1,2,4-triazolines catalyzed by a cinchona alkaloid-derived organocatalyst

(2013) Qian Shao et al.   CHEMICAL COMMUNICATIONS

Palladium-Catalyzed Asymmetric Benzylation of Azlactones

(2013) Barry M. Trost et al.   CHEMISTRY-A EUROPEAN JOURNAL

Organocatalytic Oxyamination of Azlactones: Kinetic Resolution of Oxaziridines and Asymmetric Synthesis of Oxazolin-4-ones

(2013) Shunxi Dong et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

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

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

Organocatalytic Asymmetric Michael Addition of Oxazolones to Arylsulfonyl Indoles: Facile Access tosyn-Configured α,β-Disubstituted Tryptophan Derivatives

(2012) Chang-Wu Cai et al.   EUROPEAN JOURNAL OF ORGANIC CHEMISTRY

The Dynamic Kinetic Resolution of Azlactones with Thiol Nucleophiles Catalyzed by Arylated, Deoxygenated Cinchona Alkaloids

(2012) Zaida Rodríguez-Docampo et al.   JOURNAL OF ORGANIC CHEMISTRY

Benzylic Phosphates as Electrophiles in the Palladium-Catalyzed Asymmetric Benzylation of Azlactones

(2012) Barry M. Trost et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Observation of neighboring ortho-hydroxyl group participation in organocatalytic asymmetric sequential Michael-lactonization reactions: synthesis of highly substituted chiral spirodihydrocoumarins

(2012) Dhevalapally B. Ramachary et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Enantioselective Intramolecular Formal [2 + 4] Annulation of Acrylates and α,β-Unsaturated Imines Catalyzed by Amino Acid Derived Phosphines

(2012) Zhichao Jin et al.   ORGANIC LETTERS

Enantioselective Formation of Substituted 3,4-Dihydrocoumarins by a Multicatalytic One-Pot Process

(2012) Christian Borch Jacobsen et al.   ORGANIC 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

Synthesis and biological evaluation of hydroxylated 3-phenylcoumarins as antioxidants and antiproliferative agents

(2011) Jie Yang et al.   BIOORGANIC & MEDICINAL CHEMISTRY LETTERS

Electron transfer reduction of unactivated esters using SmI2–H2O

(2011) Michal Szostak et al.   CHEMICAL COMMUNICATIONS

Dienamine Activation in the Organocatalytic Asymmetric Synthesis of cis-3,4-Difunctionalized Chromans and Dihydrocoumarins

(2011) Dieter Enders et al.   Chemistry-An Asian Journal

Oxazolones in Organocatalysis, New Tricks for an Old Reagent

(2011) Andrea-Nekane R. Alba et al.   Chemistry-An Asian Journal

A general approach to high-yielding asymmetric synthesis of chiral 3-alkyl-4-nitromethylchromans via cascade Barbas–Michael and acetalization reactions

(2011) Dhevalapally B. Ramachary et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Self-association free bifunctional thiourea organocatalysts: synthesis of chiral α-amino acids via dynamic kinetic resolution of racemic azlactones

(2011) Joong-Suk Oh et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Asymmetric Synthesis of 3,4-Dihydrocoumarin Motif with an All-Carbon Quaternary Stereocenterviaa Michael–Acetalization Sequence with Bifunctional Amine-thiourea Organocatalysts

(2011) Bor-Cherng Hong et al.   ORGANIC LETTERS

Asymmetric Synthesis of 3,4-Diaminochroman-2-ones Promoted by Guanidine and Bisguanidium Salt

(2011) Shunxi Dong et al.   ORGANIC LETTERS

Asymmetric Synthesis of cis-3,4-Disubstituted Chromans and Dihydrocoumarins via an Organocatalytic Michael Addition/ Hemiacetalization Reaction

(2010) Dieter Enders et al.   ADVANCED SYNTHESIS & CATALYSIS

Aminocatalytic asymmetric inverse-electron-demand aza-Diels–Alder reaction of N-Ts-1-aza-1,3-butadienes based on coumarin cores

(2010) Jun-Long Li et al.   CHEMICAL COMMUNICATIONS

Organocatalytic Asymmetric Tandem Michael Addition−Hemiacetalization: A Route to Chiral Dihydrocoumarins, Chromanes, and 4H-Chromenes

(2010) Dengfu Lu et al.   JOURNAL OF ORGANIC CHEMISTRY

Enantioselective organocatalytic domino Michael–acetalization–Henry reactions of 2-hydroxynitrostyrene and aldehyde for the synthesis of tetrahydro-6H-benzo[c]chromenones

(2010) Bor-Cherng Hong et al.   ORGANIC & BIOMOLECULAR CHEMISTRY

Asymmetric Aza-Mannich Addition of Oxazolones toN-Tosyl Aldimines: Synthesis of Chiral α-Disubstituted α,β-Diamino Acids

(2010) Xiaodong Liu et al.   ORGANIC LETTERS

Enantioselective Synthesis of DihydrocoumarinsviaN-Heterocyclic Carbene-Catalyzed Cycloaddition of Ketenes ando-Quinone Methides

(2009) Hui Lv et al.   ADVANCED SYNTHESIS & CATALYSIS

Asymmetric Synthesis of 3-Amino-δ-lactams and Benzo[a]quinolizidines by Catalytic Cyclization Reactions Involving Azlactones

(2009) Jun Jiang et al.   CHEMISTRY-A EUROPEAN JOURNAL

Enantioselective Direct Aldol-Type Reaction of Azlactone via Protonation of Vinyl Ethers by a Chiral Brønsted Acid Catalyst

(2009) Masahiro Terada et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Asymmetric Conjugate Reductions of Coumarins. A New Route to Tolterodine and Related Coumarin Derivatives

(2009) Brian D. Gallagher et al.   ORGANIC LETTERS

Asymmetric Synthesis of α,α-Disubstituted α-Amino Acids via Enantioselective Alkylation of Azlactones under Biphasic Conditions Using P-Spiro Chiral Tetraaminophosphonium Salts as a Phase-Transfer Catalyst

(2009) Takashi Ooi et al.   SYNLETT

Direct oxidative cyclization of 3-arylpropionic acids using PIFA or Oxone: synthesis of 3,4-dihydrocoumarins

(2009) Yonghong Gu et al.   TETRAHEDRON LETTERS

Diphenylprolinol Silyl Ether as a Catalyst in an Enantioselective, Catalytic Michael Reaction for the Formation of α,α-Disubstituted α-Amino Acid Derivatives

(2008) Yujiro Hayashi et al.   Chemistry-An Asian Journal

Novel 3-Carboxamide-coumarins as Potent and Selective FXIIa Inhibitors

(2008) Séverine Robert et al.   JOURNAL OF MEDICINAL CHEMISTRY

Organocatalytic Asymmetric Addition of Alcohols and Thiols to Activated Electrophiles: Efficient Dynamic Kinetic Resolution and Desymmetrization Protocols

(2008) Aldo Peschiulli et al.   JOURNAL OF ORGANIC CHEMISTRY

Chiral Tetraaminophosphonium Carboxylate-Catalyzed Direct Mannich-Type Reaction

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

A Ring Size-Selective Reduction of Lactones Using SmI2and H2O

(2008) Lorna A. Duffy et al.   JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Asymmetric Cycloadditions ofo-Quinone Methides Employing Chiral Ammonium Fluoride Precatalysts

(2008) Ethan Alden-Danforth et al.   ORGANIC LETTERS

Novel Catalytic Synthetic Route to Protected α-Methyl Threonine and the First Asymmetric Acetyl Migration in a Steglich Rearrangement Reaction

(2008) Harald Gröger et al.   SYNLETT