top of page
(21) Improved Synthesis of 1,2,3‐Triazolium Salts via Oxidative [3+2] Cycloaddition of Triazenes with Alkynes and Their Deprotonative Functionalization
Daiki Sawaguchi, Shunsuke Hayakawa, Masaaki Sakuma, Kenta Niitsuma, Daiya Kase, Shota Michii, Miyuki Ozawa, Yusuke Sakai, Kentaro Sakamaki, Kyohei Ueyama,
Ryosuke Haraguchi*
Asian J. Org. Chem. 2021, 10, 901−905
(20) Planar-chiral ferrocene-based triazolylidene copper complexes: synthesis, characterization, and catalysis in asymmetric borylation of α,β-unsaturated ester
Ryosuke Haraguchi,* Tatsuro Yamazaki, Koki Torita, Tatsuki Ito, Shin-ichi Fukuzawa*
Dalton Trans. 2020, 49, 17578−17583
(19) Lewis acid–base synergistic catalysis of cationic halogen-bonding-donors with nucleophilic counter anions
Koki Torita, Ryosuke Haraguchi,* Yoshitsugu Morita, Satoshi Kemmochi,
Teruyuki Komatsu, Shin-ichi Fukuzawa*
Chem. Commun. 2020, 56, 9715−9718
(18) Silver-Catalyzed Diastereo- and Enantioselective Michael Addition and 1,3-Dipolar Cycloaddition Reactions of Imino Esters to 3‑Methyl-4-nitro-5-styrylisoxazoles
Shuma Kato, Yuko Suzuki, Kota Suzuki, Ryosuke Haraguchi, Shin-ichi Fukuzawa*
J. Org. Chem. 2018, 83, 13965−13972
(17) Bulky iodotriazolium tetrafluoroborates as highly active halogen-bonding-donor catalysts
Ryosuke Haraguchi,* Shun Hoshino, Munenori Sakai, Sho-go Tanazawa, Yoshitsugu Morita, Teruyuki Komatsu, Shin-ichi Fukuzawa*
Chem. Commun. 2018, 54, 10320−10323
(16) Transition-Metal-Free Formylation of Allylzinc Reagents Leading to a–Quaternary Aldehydes
Ryosuke Haraguchi,* Akinori Kusakabe, Nakaba Mizutani, Shin-ichi Fukuzawa*
Org. Lett. 2018, 20, 1613−1616
(15) Palladium-Catalyzed Formylation of Alkenylzinc Reagents with S-(4-Nitrophenyl) Thioformate
Ryosuke Haraguchi,* Sho-go Tanazawa, Naoya Tokunaga, Shin-ichi Fukuzawa*
Eur. J. Org. Chem. 2018, 1761−1764
(14) Chiral Triazolylidene-Pd-PEPPSI: Synthesis, Characterization, and Application in Asymmetric Suzuki-Miyaura Cross-Coupling
Ryosuke Haraguchi,* Shun Hoshino, Tatsuro Yamazaki, Shin-ichi Fukuzawa*
Chem. Commun. 2018, 54, 2110−2113
(13) Synthesis of Ferrocene-Fused Pyrans through Alkynoxy- Directed C–H Activation/Cyclization
Takashi Mitsui, Yuichiro Tokoro, Ryosuke Haraguchi, Kengo Sugita, Masato Harada, Shin-ichi Fukuzawa,* Yasunori Minami, Tamejiro Hiyama*
Bull. Chem. Soc. Jpn. 2018, 91, 839−845
(12) Metal Complex-Controlled Regio-, Diastero- and Enantioselective 1,3-Dipolar Cycloaddition of Azomethine Ylides with Benzo[b]thiophene Sulfones
Masato Harada, Shuma Kato, Ryosuke Haraguchi, Shin-ichi Fukuzawa*
Chem. -Eur. J. 2018, 24, 2580−2583
(11) Nanocomposite Gels by Initiator-Free Photopolymerization: Role of Plasma-Treated Clay in the Synthesis and Network Formation
Kazutoshi Haraguchi,* Tetsuo Takada, Ryosuke Haraguchi
ACS Appl. Nano Mater. 2018, 1, 418−425
(10) Chiral Silver Complex-Catalyzed Diastereoselective and Enantioselective Michael Addition of 1-Pyrroline-5-carboxylates to a-Enones
Akihiro Koizumi, Masato Harada, Ryosuke Haraguchi, Shin-ichi Fukuzawa*
J. Org. Chem. 2017, 82, 8927−8932
(9) Palladium-Catalyzed Formylation of Arylzinc Reagents with S-Phenyl Thioformate
Ryosuke Haraguchi,* Sho-go Tanazawa, Naoya Tokunaga, and Shin-ichi Fukuzawa*
Org. Lett. 2017, 19, 1646−1649
(8) Silver-catalyzed diastereo- and enantioselective Michael additions of 2-oxazoline- and 2-thiazoline-4-carboxylate to nitroalkenes
Akihiro Koizumi, Yukiko Matsuda, Ryosuke Haraguchi, Shin-ichi Fukuzawa*
Tetrahedron Asymmetry; 2017, 28, 428−432
(7) Ligand-Controlled Stereodivergent, Enantioselective Conjugate Addition of 2-Oxazoline- and 2-Thiazoline-4-carboxylate to Nitroalkene Catalyzed by Chiral Copper Complexes
Yukiko Matsuda, Akihiro Koizumi, Ryosuke Haraguchi, Shin-ichi Fukuzawa*
J. Org. Chem. 2016, 81, 7939−7944
(6) Chemo- and Regioselective Preparation of Zinc Enolate from Thiol Esters by Palladium Catalyzed Cross-Coupling Reaction
Ryosuke Haraguchi, Zenichi Ikeda, Akihiro Ooguri, Seijiro Matsubara*
Tetrahedron 2015, 71, 8830−8837
(5) Preparation of an Arenylmethylzinc Reagent with Functional Groups by Chemoselective Cross-Coupling Reaction of Bis(iodozincio)methane with Iodoarenes
Yukako Shimada, Ryosuke Haraguchi, Seijiro Matsubara*
Synlett 2015, 26, 2395−2398
(4) Preparation of Cycloheptane Ring by Nucleophilic Cyclopropanation of 1,2-Diketones with Bis(iodozincio)methane
Ryosuke Haraguchi, Yoshiaki Takada, Seijiro Matsubara*
Org. Biomol. Chem. 2015, 13, 241−247
(3) Preparation of the Zinc Enolate Equivalent of Amides by Zinciomethylation of Isocyanates: Catalytic Asymmetric Reformatsky-Type Reaction
Ryosuke Haraguchi, Seijiro Matsubara*
Synthesis 2014, 46, 2272−2282
(2) Catalytic Asymmetric Aldol-Type Reaction of Zinc Enolate Equivalent of Amides
Ryosuke Haraguchi, Seijiro Matsubara*
Org. Lett. 2013, 15, 3378−3380
(1) Rapid Preparation of Cycloheptane Ring from 1,2-Diketone and Bis(iodozincio)methane via Oxy-Cope Rearrangement Using Microflow System
Ryosuke Haraguchi, Yoshiaki Takada, Seijiro Matsubara*
Chem. Lett. 2012, 41, 628−629
bottom of page