Search Results - "Tokimizu, Yusuke"

Gold-Catalyzed Cascade Cyclization of (Azido)ynamides: An Efficient Strategy for the Construction of Indoloquinolines by Tokimizu, Yusuke, Oishi, Shinya, Fujii, Nobutaka, Ohno, Hiroaki

“…(Azido)ynamides were efficiently converted into indoloquinolines by the use of a gold catalyst. While ynamides bearing an allylsilane gave terminal alkenes,…”
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Dual Gold Catalysis: A Novel Synthesis of Bicyclic and Tricyclic Pyrroles from N‑Propargyl Ynamides by Tokimizu, Yusuke, Wieteck, Marcel, Rudolph, Matthias, Oishi, Shinya, Fujii, Nobutaka, Hashmi, A. Stephen K, Ohno, Hiroaki

“…Various N-propargyl ynamides were converted to bicylic and tricyclic pyrroles by the use of a cationic dual-activation gold catalyst. This reaction starts with…”
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Gold-Catalyzed Cascade Cyclization of 2-Alkynyl-N-Propargylanilines by Rearrangement of a Propargyl Group by Tokimizu, Yusuke, Oishi, Shinya, Fujii, Nobutaka, Ohno, Hiroaki

“…Gold catalysis enables direct construction of tetracyclic fused indolines through the migration of a propargyl substituent from an aniline nitrogen atom to the…”
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Direct Synthesis of Quinazolines through Copper-Catalyzed Reaction of Aniline-Derived Benzamidines by Ohta, Yusuke, Tokimizu, Yusuke, Oishi, Shinya, Fujii, Nobutaka, Ohno, Hiroaki

“…A novel synthesis of 2-phenyl-4-[(triisopropylsilyl)methyl]quinazolines from monosubstituted arenes has been developed. Treatment of N-phenylbenzamidines with…”
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Synthesis of Fused Carbazoles by Gold-Catalyzed Tricyclization of Conjugated Diynes via Rearrangement of an N‑Propargyl Group by Taguchi, Masamitsu, Tokimizu, Yusuke, Oishi, Shinya, Fujii, Nobutaka, Ohno, Hiroaki

“…Various N-propargylanilines bearing a conjugated diyne moiety at the 2-position were converted to tetracyclic fused carbazoles by treatment with a homogeneous…”
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Dual Gold Catalysis: Synthesis of Polycyclic Compounds via CH Insertion of Gold Vinylidenes by Wieteck, Marcel, Tokimizu, Yusuke, Rudolph, Matthias, Rominger, Frank, Ohno, Hiroaki, Fujii, Nobutaka, Hashmi, A. Stephen K.

“…New and interesting polycyclic compounds have been synthesized from non‐conjugated diyne systems by dual gold catalysis. A quaternary carbon center in the…”
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5,10-Dihydrobenzo[a]indolo[2,3-c]carbazole: A Highly Fluorescent Disk-shaped Electron Donor Exhibiting Dual UV–vis–NIR and Fluorescence Spectral Changes upon Electrolysis by Suzuki, Takanori, Tokimizu, Yusuke, Sakano, Yuto, Katoono, Ryo, Fujiwara, Kenshu, Naoe, Saori, Fujii, Nobutaka, Ohno, Hiroaki

“…Through gold(I)-catalyzed cascade cyclization as a key step, the title electron donor was prepared, which adopts a planar geometry, as confirmed by an X-ray…”
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In vitro blood compatibility evaluation method: incubating while rotating hemodialyzers filled with fresh human blood by Kamata, Kinue, Hatanaka, Yoshihiro, Tanaka, Hiromi, Inoue, Satoru, Tokimizu, Yusuke, Tanba, Sayuri, Kishikawa, Yuki, Koizumi, Toshinori

“…One of the often-used methods for in vitro evaluation of the blood compatibility of hemodialysis membranes is the circulation of human blood through a…”
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The Role of Acetylides in Dual Gold Catalysis: A Mechanistic Investigation of the Selectivity Difference in the Naphthalene Synthesis from Diynes by Graf, Katharina, Hindenberg, Philip D., Tokimizu, Yusuke, Naoe, Saori, Rudolph, Matthias, Rominger, Frank, Ohno, Hiroaki, Hashmi, A. Stephen K.

“…Under the conditions of dual activation catalysis with oxygen nucleophiles, β‐substituted naphthalenes were obtained from 1,2‐diethinyl arenes. Mechanistic…”
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Direct synthesis of highly fused perimidines by copper(I)-catalyzed hydroamination of 2-ethynylbenzaldehydes by Tokimizu, Yusuke, Ohta, Yusuke, Chiba, Hiroaki, Oishi, Shinya, Fujii, Nobutaka, Ohno, Hiroaki

“…A novel synthesis of highly fused perimidine derivatives was achieved in two steps from 2-alkynylbenzaldehydes. Copper-catalyzed annulation of…”
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Gold-Catalyzed Cascade Cyclization of 2-Alkynyl-N-Propargylanilines by Rearrangement of a Propargyl Group by Tokimizu, Yusuke, Oishi, Shinya, Fujii, Nobutaka, Ohno, Hiroaki

“…Gold catalysis enables direct construction of tetracyclic fused indolines through the migration of a propargyl substituent from an aniline nitrogen atom to the…”
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Correction to “Gold(I)-Catalyzed Cascade Cyclization of Anilines with Diynes: Controllable Formation of Eight-Membered Ring-Fused Indoles and Propellane-Type Indolines” by Yamaguchi, Ayuta, Inuki, Shinsuke, Tokimizu, Yusuke, Oishi, Shinya, Ohno, Hiroaki

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Gold(I)-Catalyzed Cascade Cyclization of Anilines with Diynes: Controllable Formation of Eight-Membered Ring-Fused Indoles and Propellane-Type Indolines by Yamaguchi, Ayuta, Inuki, Shinsuke, Tokimizu, Yusuke, Oishi, Shinya, Ohno, Hiroaki

“…Heterocycle-fused indoles or indolines are distributed widely in a variety of natural products, bioactive agents, and pharmaceuticals. Herein, we describe the…”
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Wurster's Blue-type Cation Radicals Framed in a 5,10-Dihydrobenzo[a]indolo[2,3-c]carbazole (BIC) Skeleton: Dual Electrochromism with Drastic Changes in UV/Vis/NIR and Fluorescence by Suzuki, Takanori, Sakano, Yuto, Tokimizu, Yusuke, Miura, Youhei, Katoono, Ryo, Fujiwara, Kenshu, Yoshioka, Naoki, Fujii, Nobutaka, Ohno, Hiroaki

“…Electron‐donating dihydrobenzindolocarbazoles (BICs) 1 a–c, which adopt planar disk‐shaped geometries, were prepared by gold(I)‐catalyzed cyclization as a key…”
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Dual Gold Catalysis: Synthesis of Polycyclic Compounds via CH Insertion of Gold Vinylidenes by Wieteck, Marcel, Tokimizu, Yusuke, Rudolph, Matthias, Rominger, Frank, Ohno, Hiroaki, Fujii, Nobutaka, Hashmi, A Stephen K

“…New and interesting polycyclic compounds have been synthesized from non-conjugated diyne systems by dual gold catalysis. A quaternary carbon center in the…”
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5,10-Dihydrobenzo[a]indolo[2,3-c]carbazole by Suzuki, Takanori, Tokimizu, Yusuke, Sakano, Yuto, Katoono, Ryo, Fujiwara, Kenshu, Naoe, Saori, Fujii, Nobutaka, Ohno, Hiroaki

“…Through gold(I)-catalyzed cascade cyclization as a key step, the title electron donor was prepared, which adopts a planar geometry, as confirmed by an X-ray…”
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Inside Back Cover: Wurster's Blue-type Cation Radicals Framed in a 5,10-Dihydrobenzo[a]indolo[2,3-c]carbazole (BIC) Skeleton: Dual Electrochromism with Drastic Changes in UV/Vis/NIR and Fluorescence (Chem. Asian J. 7/2014) by Suzuki, Takanori, Sakano, Yuto, Tokimizu, Yusuke, Miura, Youhei, Katoono, Ryo, Fujiwara, Kenshu, Yoshioka, Naoki, Fujii, Nobutaka, Ohno, Hiroaki

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