E. Tayama

发表

Copper(II)–acid co-catalyzed intermolecular substitution of electron-rich aromatics with diazoesters

E. Hasegawa, Moe Ishikawa, H. Iwamoto, 2012 .

Solvent-Dependent Reaction Pathways Operating in Copper(II) Tetrafluoroborate Promoted Oxidative Ring-Opening Reactions of Cyclopropyl Silyl Ethers.

R. Nagumo, E. Hasegawa, H. Iwamoto, 2016, The Journal of organic chemistry.

Metal-free, one-pot, sequential protocol for transforming α,β-epoxy ketones to β-hydroxy ketones and α-methylene ketones.

E. Hasegawa, H. Iwamoto, E. Tayama, 2015, The Journal of organic chemistry.

1,2-Dimethoxy-4,5-dimethylene: a new protecting group for acyclic amino acid derivatives prepared by Stevens rearrangement

E. Hasegawa, H. Iwamoto, E. Tayama, 2012 .

RING-SUBSTITUTION, ENLARGEMENT, AND CONTRACTION BY BASE-INDUCED REARRANGEMENTS OF N-HETEROCYCLIC AMMONIUM SALTS

E. Tayama, 2016 .

(2,7-Disubstituted-1,8-biphenylenedioxy)bis(dimethylaluminum) as bidentate organoaluminum Lewis acids: elucidation and synthetic Utility of the double electrophilic activation phenomenon.

K. Maruoka, K. Omoto, T. Ooi, 2004, Journal of the American Chemical Society.

AN EFFECTIVE PROCEDURE TO PROMOTE AZA-PRINS CYCLIZATION REACTIONS EMPLOYING A COMBINATION OF FERRIC CHLORIDE AND AN IMIDAZOLIUM SALT IN BENZOTRIFLUORIDE

E. Hasegawa, Kensuke Miura, H. Iwamoto, 2012 .

Application of biphasic reaction procedure using ferric chloride dissolved in an imidazolium salt and benzotrifluoride (FeIm-BTF procedure) to aza-Prins cyclization reaction

E. Hasegawa, H. Iwamoto, E. Tayama, 2010 .

Double axial chirality promoted asymmetric [2,3] Stevens rearrangement of N-cinnamyl L-alanine amide-derived ammonium ylides.

E. Hasegawa, H. Iwamoto, E. Tayama, 2014, Chemical communications.

Asymmetric α-2-tosylethenylation of N,N-dialkyl-L-amino acid esters via the formation of non-racemic ammonium enolates.

E. Hasegawa, H. Iwamoto, E. Tayama, 2012, Organic & biomolecular chemistry.

Dramatic Enhancement of Reactivity of Organosilicon Compounds Induced by Complexation of Bis(allyl)silanes with Fluoride Ion

K. Maruoka, N. Asao, E. Tayama, 2000 .

Recent Advances in the Base-Induced Sommelet-Hauser Rearrangement of Amino Acid Derived Ammonium Ylides.

E. Tayama, 2015, Chemical record.

(2,7-Disubstituted-1,8-biphenylenedioxy)bis(dimethylaluminum) as bidentate organoaluminum Lewis acids: elucidation and synthetic Utility of the double electrophilic activation phenomenon.

K. Maruoka, K. Omoto, T. Ooi, 2004, Journal of the American Chemical Society.

Direct vinylogous Mannich-type reactions via ring opening and rearrangement of vinyloxiranes.

M. Lautens, E. Tayama, D. Nguyen, 2004, Organic letters.

Copper(II)–acid catalyzed cyclopropanation of 1,3-dienamides by electrophilic activation of α-aryl diazoesters

E. Hasegawa, H. Iwamoto, E. Tayama, 2014 .

Palladium-catalyzed intramolecular coupling between aryl iodides and allyl moieties via thermal and microwave-assisted conditions.

M. Lautens, Christelle Herse, E. Tayama, 2005, Journal of the American Chemical Society.

Efficient Synthesis of Aromatic sec-Amides from Esters: Synthetic Utility of Bislithium Amides

K. Maruoka, T. Ooi, E. Tayama, 1999 .

Regioselective synthesis of secondary 1,3-dienamides by successive eliminations

Shun Saito, E. Tayama, 2016 .

Stereoselective preparation of (1Z)- and (1E)-N-Boc-1-amino-1,3-dienes by stereospecific base-promoted 1,4-elimination

E. Tayama, Yuka Toma, 2015 .

Brønsted acid catalyzed regioselective aza-Ferrier reaction: a novel synthetic method for alpha-(N-Boc-2-pyrrolidinyl) aldehydes.

E. Tayama, Seijun Otoyama, Wataru Isaka, 2008, Chemical communications.

Base-promoted diastereoselective α-alkylation of borane N-((S)-1'-phenylethyl)azetidine-2-carboxylic acid ester complexes.

Y. Kobayashi, E. Tayama, Ryotaro Nishio, 2018, Organic & biomolecular chemistry.

Structural and mechanistic studies of the base-induced Sommelet-Hauser rearrangement of N-α-branched benzylic azetidine-2-carboxylic acid-derived ammonium salts.

Kazutoshi Watanabe, E. Tayama, Sho Sotome, 2017, Organic & biomolecular chemistry.

Ring‐Strain Effects in Base‐Induced Sommelet–Hauser Rearrangement: Application to Successive Stereocontrolled Transformations

Y. Matano, Kazutoshi Watanabe, E. Tayama, 2016 .

Stereoselective terminal functionalization of small peptides for catalytic asymmetric synthesis of unnatural peptides.

K. Maruoka, T. Ooi, E. Tayama, 2004, Proceedings of the National Academy of Sciences of the United States of America.

A Unique and Simple Preparative Method for α-Arylpipecolinic Acid Esters via Base-induced Sommelet-Hauser Rearrangement

E. Hasegawa, H. Iwamoto, E. Tayama, 2013 .

A facile synthetic method of α-quaternary-β,γ-unsaturated aldehydes via the stereoselective 1,4-elimination and α-regioselective Ferrier reaction

Ryo Hashimoto, E. Tayama, 2007 .

Regio- and stereoselective Ferrier reaction of O-1,3-dienyl acetals promoted by organoaluminum complexes.

E. Tayama, Wataru Isaka, 2006, Organic letters.

Activation of ether functionality of allyl vinyl ethers by chiral bis(organoaluminum) Lewis acids: application to asymmetric Claisen rearrangement

K. Maruoka, T. Ooi, A. Saito, 2002 .

Copper(II)-salt-promoted oxidative ring-opening reactions of bicyclic cyclopropanol derivatives via radical pathways

R. Nagumo, E. Hasegawa, H. Iwamoto, 2013, Beilstein journal of organic chemistry.

Activation and stabilization of aldimines by an ortho-trifluoromethyl substituent in direct vinylogous Mannich-type reactions

M. Lautens, E. Tayama, D. Nguyen, 2004 .

1,4-Elimination/Brønsted acid catalyzed aza-Ferrier reaction sequence as an entry to β-amino-β,γ-unsaturated aldehydes

E. Hasegawa, H. Iwamoto, E. Tayama, 2013 .

BIDENTATE ORGANOALUMINUM LEWIS ACID FOR SELECTIVE ACTIVATION OF CARBONYL OVER ACETAL FUNCTIONALITY : CHEMOSELECTIVE FUNCTIONALIZATION

K. Maruoka, T. Ooi, Makoto Takahashi, 1997 .

New synthetic routes to optically active alpha-quaternary alpha-aryl amino acid derivatives via the diastereoselective Stevens and Sommelet-Hauser rearrangements.

H. Kimura, E. Tayama, Kiwako Orihara, 2008, Organic & biomolecular chemistry.

Asymmetric [1,2] Stevens Rearrangement of (S)-N-Benzylic Proline-derived Ammonium Salts under Biphasic Conditions

T. Nakai, E. Tayama, Shintaro Nanbara, 2006 .

Aryl-substituted dimethylbenzimidazolines as effective reductants of photoinduced electron transfer reactions

Shin‐ya Takizawa, S. Murata, T. Ikoma, 2015 .

A photo-reagent system of benzimidazoline and Ru(bpy)3Cl2 to promote hexenyl radical cyclization and Dowd–Beckwith ring-expansion of α-halomethyl-substituted benzocyclic 1-alkanones

Shin‐ya Takizawa, S. Murata, E. Hasegawa, 2014 .

Base-induced Sommelet–Hauser rearrangement of N-(pyridinylmethyl) tetraalkylammonium salts

G. Shimizu, E. Tayama, Ryo Nakao, 2022, Tetrahedron.

Asymmetric Sommelet-Hauser rearrangement of N-benzylic ammonium salts.

H. Kimura, E. Tayama, 2007, Angewandte Chemie.

Base-promoted aromatic [3,3] sigmatropic rearrangement of N-acyl-O-arylhydroxylamine derivatives

E. Tayama, Kazuki Hirano, 2019, Tetrahedron.

Carbon–carbon bond formation via benzoyl umpolung attained by photoinduced electron-transfer with benzimidazolines

E. Hasegawa, H. Iwamoto, E. Tayama, 2013 .

Remarkable template effect of a Lewis acid receptor in the intramolecular radical cyclization: control of reaction pathway as well as stereochemistry

K. Maruoka, T. Ooi, E. Tayama, 2001 .

Diaza [1,4] Wittig-type rearrangement of N-allylic-N-Boc-hydrazines into γ-amino-N-Boc-enamines.

Y. Kobayashi, E. Tayama, Yuka Toma, 2016, Chemical communications.

A facile and stereoselective synthetic method for allylic 1,3-dienyl ethers

M. Hara, E. Tayama, S. Sugai, 2006 .

Selective synthesis of [2]- and [3]catenane tuned by ring size and concentration.

T. Hagiwara, T. Haino, E. Hasegawa, 2013, The Journal of organic chemistry.

Synthesis of linear [5]catenanes via olefin metathesis dimerization of pseudorotaxanes composed of a [2]catenane and a secondary ammonium salt.

W. Katagiri, Y. Fukazawa, T. Haino, 2016, Chemical communications.

A facile method for the stereoselective preparation of (1E, 3E)-4-substituted-1-amino-1,3-dienes via 1,4-elimination

E. Tayama, S. Sugai, 2007 .

Chiral Tetraaryl‐ and Tetraalkynylborates as Chiral Solvating Agents for Tetraalkylammonium Salts

E. Tayama, T. Sugawara, 2019, European Journal of Organic Chemistry.

Chiral tetraalkynylborate as a chiral solvating agent for N-chiral tetraalkylammonium salts

E. Tayama, Ryotaro Nishio, 2022, Tetrahedron.

Dearomative [2,3] sigmatropic rearrangement of ammonium ylides followed by 1,4-elimination to form α-(ortho-vinylphenyl)amino acid esters.

E. Tayama, Sho Sotome, 2018, Organic & biomolecular chemistry.

Remarkable enhancement effect of potassium tert-butoxide/THF solution in base-induced Sommelet–Hauser rearrangements

E. Hasegawa, H. Iwamoto, E. Tayama, 2010 .

A case of solid pseudopapillary neoplasm of the pancreas in which the majority of cells showed vacuolated cytoplasm

Satomi Takahashi, T. Fujisawa, S. Sogo, 2017 .

Copper(II) Triflate Catalyzed Intermolecular Aromatic Substitution of N,N‐Disubstituted Anilines with Diazo Esters

E. Hasegawa, H. Iwamoto, E. Tayama, 2010 .

Copper(II) Triflate Catalyzed Intermolecular Aromatic Substitution of N,N-Disubstituted Anilines with Diazo Esters.

E. Hasegawa, H. Iwamoto, E. Tayama, 2011 .

Synthesis of tertiary alkyl fluorides and chlorides by site-selective nucleophilic ring-opening reaction of α-aryl azetidinium salts

E. Tayama, Kohei Kawai, 2021, RSC advances.

Synthesis of optically active 2-substituted azetidine-2-carbonitriles from chiral 1-arylethylamine via α-alkylation of N-borane complexes

E. Tayama, Nobuhiro Nakanome, 2021, RSC advances.

Highly enantioselective phase-transfer-catalyzed alkylation of protected alpha-amino acid amides toward practical asymmetric synthesis of vicinal diamines, alpha-amino ketones, and alpha-amino alcohols.

K. Maruoka, T. Ooi, Y. Uematsu, 2005, Journal of the American Chemical Society.

Highly Enantioselective Phase‐Transfer‐Catalyzed Alkylation of Protected α‐Amino Acid Amides Toward Practical Asymmetric Synthesis of Vicinal Diamines, α‐Amino Ketones, and α‐Amino Alcohols.

K. Maruoka, T. Ooi, Y. Uematsu, 2005 .

Practical asymmetric synthesis of vicinal diamines through the catalytic highly enantioselective alkylation of glycine amide derivatives.

K. Maruoka, T. Ooi, E. Tayama, 2003, Angewandte Chemie.

Highly stereoselective N-terminal functionalization of small peptides by chiral phase-transfer catalysis.

K. Maruoka, T. Ooi, E. Tayama, 2003, Angewandte Chemie.

Brønsted Acid-Catalyzed Aza-Ferrier Reaction of N,O-Allenyl Acetals: Synthesis of β-Amino-α-methylene Aldehydes.

Yuki Ishikawa, E. Tayama, 2020, The Journal of organic chemistry.

A facile method for the stereoselective preparation of (1Z,3E)-dienyl ethers via 1,4-elimination of 1,4-dialkoxy-(2Z)-alkenes with n-butyllithium

E. Tayama, S. Sugai, 2006 .

Copper-Catalyzed Regiospecific and 1,2-Regioselective Cyclopropanation of (1Z)-1-Amino- and (1Z)-1-Oxy-1,3-butadienyl Derivatives

Shun Saito, E. Tayama, 2015, Synlett.

Synthesis of α-fluoro-γ-aminobutyric acid derivatives by nucleophilic ring-opening of azetidine-2-carboxylic acid-derived ammonium salts with fluoride

E. Tayama, Nobuhiro Nakanome, Y. Kurosaki, 2023, Tetrahedron.