Search Results - "Yoshinari Sawama"

New Gateways to the Platinum Group Metal-Catalyzed Direct Deuterium-Labeling Method Utilizing Hydrogen as a Catalyst Activator by Sawama, Yoshinari, Park, Kwihwan, Yamada, Tsuyoshi, Sajiki, Hironao

“…Deuterium-labeled compounds are widely utilized in various scientific fields. We summarize the recent advances in the direct deuteration of sugar, saturated…”
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Synthesis of 1‐Pyrroline by Denitrogenative Ring Expansion of Cyclobutyl Azides under Thermal Conditions by Miki, Yuya, Tomita, Naohito, Ban, Kazuho, Sajiki, Hironao, Sawama, Yoshinari

“…We herein report an efficient and systematic synthesis of 1‐pyrrolines from cyclobutyl azides under thermal and neutral conditions. The reaction proceeded…”
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Continuous‐Flow Suzuki‐Miyaura and Mizoroki‐Heck Reactions under Microwave Heating Conditions by Monguchi, Yasunari, Ichikawa, Tomohiro, Yamada, Tsuyoshi, Sawama, Yoshinari, Sajiki, Hironao

“…Microwave‐assisted continuous‐flow reactions have attracted significant interest from synthetic organic chemists, especially process chemists from practical…”
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One-Pot Heteroarene Synthesis Based on Ruthenium-on-Carbon-Catalyzed Oxidative Aromatization Using Oxygen by Yamamoto, Yuta, Yamada, Yutaro, Sajiki, Hironao, Sawama, Yoshinari

“…Various heteroarenes, such as indole, carbazole, dibenzofuran, dibenzothiophene, etc., were easily constructed by the Diels-Alder reaction of the corresponding…”
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Preparation of N2-Ethyl-2′-deoxyguanosine-d4 as an Internal Standard for the Electrospray Ionization–Tandem Mass Spectrometric Determination of DNA Damage by Acetaldehyde by ESAKA, Yukihiro, ARUGA, Hiromitsu, KUNISHIMA, Saki, YAMAMOTO, Takuhei, MURAKAMI, Hiroya, SAWAMA, Yoshinari, SAJIKI, Hironao, UNO, Bunji

“…The deuteration of N2-ethyl-2′-deoxyguanosine (Et-dG), which is a DNA adduct generated from acetaldehyde, was studied by the addition reaction of…”
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Improvement Parameters of Hydrogen Generation from Water under Stainless-Steel-Mediated Ball Milling Conditions by Itoh, Miki, Sawama, Yoshinari, Niikawa, Miki, Ban, Kazuho, Kawajiri, Takahiro, Sajiki, Hironao

“…Mechanochemical energy derived from the collision and friction among stainless-steel (SUS304) balls and a vessel by a planetary ball mill machine effectively…”
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Palladium on Carbon-Catalyzed Aqueous Transformation of Primary Alcohols to Carboxylic Acids Based on Dehydrogenation under Mildly Reduced Pressure by Sawama, Yoshinari, Morita, Kosuke, Asai, Shota, Kozawa, Masami, Tadokoro, Shinsuke, Nakajima, Junichi, Monguchi, Yasunari, Sajiki, Hironao

“…The catalytic dehydrogenation of alcohols to carbonyl products is a green sustainable oxidation with no production of waste except for hydrogen, which can be…”
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Copper‐Catalyzed Aqueous N−O Bond Cleavage of 2‐Oxa‐3‐Azabicyclo Compounds to Cyclic cis‐1,4‐Amino Alcohols by Yasukawa, Naoki, Miki, Yuya, Kuwata, Marina, Sajiki, Hironao, Sawama, Yoshinari

“…The N−O bond cleavage of 2‐oxa‐3‐azabicyclo substrates, which are readily prepared by the hetero Diels‐Alder reaction between nitroso dienophiles and cyclic…”
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Oxidative Coupling of Hydroquinone Derivatives with Olefins to Dihydrobenzofurans by Sawama, Yoshinari, Nakajima, Keiichiro, Aijima, Takaaki, Mae, Miyu, Komagawa, Shinsuke, Nakata, Hiroki, Sajiki, Hironao, Akai, Shuji

“…Dihydrobenzofuran is an important skeleton for bioactive compounds and natural products. Hydroquinones can be easily modified into substituted hydroquinones,…”
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Development of a Palladium on Boron Nitride Catalyst and its Application to the Semihydrogenation of Alkynes by Yabe, Yuki, Yamada, Tsuyoshi, Nagata, Saori, Sawama, Yoshinari, Monguchi, Yasunari, Sajiki, Hironao

“…The simple preparative method for a novel palladium supported on boron nitride catalyst (Pd/BN) was accomplished. Pd/BN is widely applicable for the…”
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Oxidative Functionalization of Catechol Derivatives Substituted with Electron-Withdrawing Groups by Sawama, Yoshinari, Shimizu, Hyoga, Aijima, Takaaki, Udagawa, Taro, Kuwata, Shoko, Yamada, Tsuyoshi, Sajiki, Hironao, Akai, Shuji

“…Catechols possessing electron-withdrawing groups at the C3 position effectively underwent oxidative functionalization at the C4 position in the presence of…”
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Chemoselective Nucleophilic Functionalizations of Aromatic Aldehydes and Acetals via Pyridinium Salt Intermediates by Kawajiri, Takahiro, Kato, Maho, Nakata, Hiroki, Goto, Ryota, Aibara, Shin-yo, Ohta, Reiya, Fujioka, Hiromichi, Sajiki, Hironao, Sawama, Yoshinari

“…The development of a novel chemoselective functionalization can diversify the strategy for synthesizing the target molecules. The perfect chemoselectivity…”
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Development of a Unique Heterogeneous Palladium Catalyst for the Suzuki–Miyaura Reaction using (Hetero)aryl Chlorides and Chemoselective Hydrogenation by Ichikawa, Tomohiro, Netsu, Moeko, Mizuno, Masahiro, Mizusaki, Tomoteru, Takagi, Yukio, Sawama, Yoshinari, Monguchi, Yasunari, Sajiki, Hironao

“…A unique heterogeneous palladium catalyst (7% Pd/WA30) supported on an anion exchange resin, which contains N,N‐dimethylaminoalkyl functionalities on the…”
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Mild and Direct Multiple Deuterium-Labeling of Saturated Fatty Acids by Yamada, Tsuyoshi, Park, Kwihwan, Yasukawa, Naoki, Morita, Kosuke, Monguchi, Yasunari, Sawama, Yoshinari, Sajiki, Hironao

“…We have established a mild and direct platinum on carbon (Pt/C)‐catalyzed multi‐deuterium labeling of various saturated fatty acids including bioactive…”
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Selective Synthesis of Primary Amines from Nitriles under Hydrogenation Conditions by Yoshimura, Masatoshi, Komatsu, Akira, Niimura, Masaru, Takagi, Yukio, Takahashi, Tohru, Ueda, Shun, Ichikawa, Tomohiro, Kobayashi, Yutaka, Okami, Hiroki, Hattori, Tomohiro, Sawama, Yoshinari, Monguchi, Yasunari, Sajiki, Hironao

“…The hydrogenation of aliphatic nitriles over Pd/C, Pd/Al2O3, and Pd−Au/Al2O3 catalysts were evaluated for the selective hydrogenation of aliphatic nitriles to…”
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Chemoselective and Direct Functionalization of Methyl Benzyl Ethers and Unsymmetrical Dibenzyl Ethers by Using Iron Trichloride by Sawama, Yoshinari, Goto, Ryota, Nagata, Saori, Shishido, Yuko, Monguchi, Yasunari, Sajiki, Hironao

“…Methyl and benzyl ethers are widely utilized as protected alcohols due to their chemical stability, such as the low reactivity of the methoxy and benzyloxy…”
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Direct Deuteration of Acrylic and Methacrylic Acid Derivatives Catalyzed by Platinum on Carbon in Deuterium Oxide by Park, Kwihwan, Matsuda, Takumi, Yamada, Tsuyoshi, Monguchi, Yasunari, Sawama, Yuka, Doi, Naoki, Sasai, Yasushi, Kondo, Shin‐ichi, Sawama, Yoshinari, Sajiki, Hironao

“…The platinum on carbon (Pt/C)‐catalyzed deuteration of acrylic and methacrylic acid derivatives in deuterium oxide (D2O) efficiently proceeded to give the…”
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Systematic evaluation of the palladium-catalyzed hydrogenation under flow conditions by Hattori, Tomohiro, Tsubone, Aya, Sawama, Yoshinari, Monguchi, Yasunari, Sajiki, Hironao

“…Four types of heterogeneous Pd catalysts (10% Pd/C, 10% Pd/HP20, 0.5% Pd/MS3A, and 0.3% Pd/BN) were applied to the flow hydrogenation to systematically…”
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Heterogeneous One‐Pot Carbonylation and Mizoroki–Heck Reaction in a Parallel Manner Following the Cleavage of Cinnamaldehyde Derivatives by Hattori, Tomohiro, Ueda, Shun, Takakura, Ryoya, Sawama, Yoshinari, Monguchi, Yasunari, Sajiki, Hironao

“…Carbon monoxide (CO) and styrene derivatives that can be both generated by a palladium on carbon (Pd/C)‐catalyzed carbon–carbon (C−C) bond cleavage reaction of…”
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Palladium on Carbon-Catalyzed One-Pot N-Arylindole Synthesis: Intramolecular Aromatic Amination, Aromatization, and Intermolecular Aromatic Amination by Monguchi, Yasunari, Marumoto, Takahisa, Takamatsu, Haruki, Sawama, Yoshinari, Sajiki, Hironao

“…Indole and indoline derivatives were selectively and temperature dependently synthesized via the intramolecular cross‐coupling reaction between the amino and…”
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