Search Results - "Momiyama, Norie"

Chiral Phosphoric Acid Catalyzed Diastereo- and Enantioselective Mannich-Type Reaction between Enamides and Thiazolones by Kikuchi, Jun, Momiyama, Norie, Terada, Masahiro

“…An enantioselective Mannich-type reaction between enamides, serving as aliphatic imine equivalents, and thiazolones or an azlactone, serving as α-amino acid…”
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Chiral Counteranion-Directed Catalytic Asymmetric Methylene Migration Reaction of Ene-Aldimines by Momiyama, Norie, Jongwohan, Chanantida, Ohtsuka, Naoya, Chaibuth, Pawittra, Fujinami, Takeshi, Adachi, Kiyohiro, Suzuki, Toshiyasu

“…A catalytic asymmetric methylene migration reaction of ene-aldimines directed by chiral counteranions is developed, with the optimal catalyst identified as…”
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Enantioselective Activation of Aldehydes by Chiral Phosphoric Acid Catalysts in an Aza-ene-type Reaction between Glyoxylate and Enecarbamate by Terada, Masahiro, Soga, Kazuyo, Momiyama, Norie

“…Double interaction does it: Highly enantio‐ and diastereoselective aza‐ene‐type reaction of glyoxylate with an enecarbamate is accomplished by using a…”
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Brønsted Acid Catalysis of Achiral Enamine for Regio- and Enantioselective Nitroso Aldol Synthesis by Momiyama, Norie, Yamamoto, Hisashi

“…Two types of chiral Brønsted acid catalysts have been shown to catalyze regio- and enantioselective nitroso aldol synthesis between nitrosobenzene and achiral…”
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Correlations between Substituent Effects and Catalytic Activities: A Quantitative Approach for the Development of Halogen‐Bonding‐Driven Anion‐Binding Catalysts by Momiyama, Norie, Izumiseki, Atsuto, Ohtsuka, Naoya, Suzuki, Toshiyasu

“…A quantitative approach for the development of halogen‐bonding‐driven anion‐binding catalysts was studied using 4‐substituted perfluorinated iodobenzene. 19F…”
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Chiral Phosphoric Acid-Governed Anti-Diastereoselective and Enantioselective Hetero-Diels−Alder Reaction of Glyoxylate by Momiyama, Norie, Tabuse, Hideaki, Terada, Masahiro

“…A highly enantioselective anti-diastereoselective hetero-Diels−Alder reaction between a glyoxylate and siloxy- or methoxydienes using a chiral phosphoric acid…”
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Enantioselective Tandem O-Nitroso Aldol/Michael Reaction by Yamamoto, Yuhei, Momiyama, Norie, Yamamoto, Hisashi

“…This communication presents studies that illustrated nitroso Diels−Alder adduct has been obtained in uniformly high enantioselectivity via a tandem nitroso…”
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Computational Studies on Reaction Mechanisms and Origin of Stereoselectivity in the [1,3]‐Rearrangement of Ene‐Aldimines by Momiyama, Norie, Honda, Yasushi, Suzuki, Toshiyasu, Jongwohan, Chanantida

“…The mechanism of Brønsted acid‐initiated formal [1,3]‐rearrangement was rationalized using density functional theory (DFT) calculations. The computed mechanism…”
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Moderately Oxidizing Thioxanthylium Organophotoredox Catalysts for Radical-Cation Diels–Alder Reactions by Tanaka, Kenta, Kishimoto, Mami, Tanaka, Yuta, Kamiyama, Yusuke, Asada, Yosuke, Sukekawa, Mayumi, Ohtsuka, Naoya, Suzuki, Toshiyasu, Momiyama, Norie, Honda, Kiyoshi, Hoshino, Yujiro

“…Moderately oxidizing thioxanthylium photoredox catalysts that operate under irradiation with green light have been developed. These catalysts exhibit…”
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Mutational and Environmental Effects on the Dynamic Conformational Distributions of Lys48-Linked Ubiquitin Chains by Hiranyakorn, Methanee, Yagi-Utsumi, Maho, Yanaka, Saeko, Ohtsuka, Naoya, Momiyama, Norie, Satoh, Tadashi, Kato, Koichi

“…In multidomain proteins, individual domains connected by flexible linkers are dynamically rearranged upon ligand binding and sensing changes in environmental…”
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Quasi-Homoepitaxial Junction of Organic Semiconductors: A Structurally Seamless but Electronically Abrupt Interface between Rubrene and Bis(trifluoromethyl)dimethylrubrene by Takahashi, Kana, Izawa, Seiichiro, Ohtsuka, Naoya, Izumiseki, Atsuto, Tsuruta, Ryohei, Takeuchi, Riku, Gunjo, Yuki, Nakanishi, Yuki, Mase, Kazuhiko, Koganezawa, Tomoyuki, Momiyama, Norie, Hiramoto, Masahiro, Nakayama, Yasuo

“…Single-crystalline organic semiconductors exhibiting band transport have opened new possibilities for the utilization of efficient charge carrier conduction in…”
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Three-center-four-electron halogen bond enables non-metallic complex catalysis for Mukaiyama-Mannich-type reaction by Oishi, Shunya, Fujinami, Takeshi, Masui, Yu, Suzuki, Toshiyasu, Kato, Masayuki, Ohtsuka, Naoya, Momiyama, Norie

“…The three-center-four-electron halogen bond (3c4e X-bond) presents a fundamental design concept for catalysis. By integrating halogen(I) (X+: I+ or Br+), the…”
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Synthetic Method for 2,2'-Disubstituted Fluorinated Binaphthyl Derivatives and Application as Chiral Source in Design of Chiral Mono-Phosphoric Acid Catalyst by Momiyama, Norie, Okamoto, Hiroshi, Shimizu, Masahiro, Terada, Masahiro

“…A practical synthetic method for 2,2'‐disubstituted fluorinated binaphthyl derivatives was achieved using magnesium bis(2,2,6,6‐tetramethylpiperamide)…”
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Protocol for efficient dearomatization of N-heteroaromatics with halogen(I) complex catalyst by Oishi, Shunya, Fujinami, Takeshi, Masui, Yu, Suzuki, Toshiyasu, Kato, Masayuki, Ohtsuka, Naoya, Momiyama, Norie

“…In this protocol, we describe the application of a halogen(I) complex as a highly active non-metallic complex catalyst. Specifically, we present a detailed…”
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O-Nitroso Aldol Synthesis: Catalytic Enantioselective Route to α-Aminooxy Carbonyl Compounds via Enamine Intermediate by Momiyama, Norie, Torii, Hiromi, Saito, Susumu, Yamamoto, Hisashi, Trost, Barry M.

“…The approach using pyrrolidine enamine as substrate has been studied for this synthesis, and an important catalyst structural feature has been developed. After…”
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Lewis Acid Promoted, O-Selective, Nucleophilic Addition of Silyl Enol Ethers to NO bonds by Momiyama, Norie, Yamamoto, Hisashi

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Lewis Acid Promoted, O-Selective, Nucleophilic Addition of Silyl Enol Ethers to NdO bonds We thank Prof. Akira Yanagisawa (Department of Chemistry, Faculty of Science, Chiba University) for helpful discussion, Dr. Yujiro Hoshino for stimulating discussion and X-ray crystallographic analysis, and Mr. Kin-ichi Oyama (Chemical Instrument Center of Nagoya University) for measurement of ESI mass spectra by Momiyama, Norie, Yamamoto, Hisashi

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Design of Chiral Bis-phosphoric Acid Catalyst Derived from (R)-3,3′-Di(2-hydroxy-3-arylphenyl)binaphthol: Catalytic Enantioselective Diels–Alder Reaction of α,β-Unsaturated Aldehydes with Amidodienes by Momiyama, Norie, Konno, Tohru, Furiya, Yuichi, Iwamoto, Takeaki, Terada, Masahiro

“…Chiral bis-phosphoric acid 1 was designed to identify a new class of structural features in chiral Brønsted acid catalysts. X-ray diffraction analysis revealed…”
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Diastereo- and Enantioselective Synthesis of Nitroso Diels−Alder-Type Bicycloketones Using Dienamine:  Mechanistic Insight into Sequential Nitroso Aldol/Michael Reaction and Application for Optically Pure 1-Amino-3,4-diol Synthesis by Momiyama, Norie, Yamamoto, Yuhei, Yamamoto, Hisashi

“…This article presents complete diastereo- and highly enantioselective synthesis of nitroso Diels−Alder-type bicycloketones using dienamine. With the hydrogen…”
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Chiral Brønsted Acid Catalysis for Enantioselective Hosomi−Sakurai Reaction of Imines with Allyltrimethylsilane by Momiyama, Norie, Nishimoto, Hayato, Terada, Masahiro

“…The chiral Brønsted acid (1b or 1c) has been shown to initiate the Hosomi−Sakurai reaction of imines with excellent enantioselectivities. The combined Brønsted…”
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