寄稿論文 規則性無機ナノ空間が創り出す新しい触媒能 | 東京化成工業
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1 MCM-41 M41 MCM-41 M41 2
2 3 m 2 /g nm nm
3 Mn Ti Ti H N 2 S Ti-MCM-41, H H N H H 2 2 -Urea, CH 2 Cl 2, H 2 S + S 1b 2b 3b 54%, 58% ee Ti M41 H 2 As 4 ZP 4
4 ZP ZS ZS 5
5 Me Me Me Me M41 / 15 mg MeH 1.0 mmol 89% Yield(GC) nm nm Kaliaguine Kevan B-M41 Ni-M41 M41 M41 6
6 R 1 CH or Me R 1 Me SiMe 3 R + M41 CH 2 Cl 2 R 1 M41 Entry Electrophile Enolate MCM-41 / mg/mmol Reaction Conditions Product Yield(%) Me Me Me 1 3 Ph H C, 6 h Ph 84 Me Me Me 2 6 Ph H C, 12 h Ph 64 Me Me Me C, 12 h 90 Me Me C, 3 h Ph Ph Me a 85 b 87 c 90 d entries 1 and 3 entries 2 and 4 a b c d 7
7 M41 Silica gel 60 M41 M41 Al Si/Al = M41 mmol M41 M41 nm 2 H + Me M41 / 90 mg 180 C, 16 h C 5 H 11 Me C 5 H mmol 5.0 ml 85% Yield HZSM-5 M41 M41 M41 M41 8
8 Acid Product Isolated Yield(%) C 2 H 5 H C 2 H 5 Me 33 C 3 H 7 H C 3 H 7 Me 68 C 5 H 11 H 4 C 15 H 31 H C 5 H 11 C 15 H 31 Me Me i C 3 H 7 H i C 3 H 7 Me 68 H Me 76 Ph H Ph Me 66 M4 M41 M41 M C 8 H 17 Cl or 1-C 8 H 17 H M41 / 100 mg 210 C C C 1 2 C 3 C 7 C 6 C 5 C 4 9
9 h µmol g 1 µmol g 1 µmol g 1 µmol g 1 µmol g 1 µmol g 1 M41 mmol g 1 Al µmol g 1 M41 n-c 8 H 17 Cl Ni/Si 2 M41 Ni-M41 Ni-M41 10
10 Ni-M41 ETP Ni-M41 Ni M41 Ni Mo W Re Ni Ni M41 LH 11
11 M41 M41 V 2 5 /aq.h 2 2 M41 cis cis V ion (12 µmol) M41(100 mg) aq. H 2 2 (1 eq.) 1,4-Dioxane (2.0 ml) r.t. 12 h cis-diol trans-diol H H H H p cis cis de cis cis σ cis trans σ de cis M41 M41 H 2 S 4 12
12 CREST 11) 1) A. Corma, Chem. Rev., 97, 2373 (1997); G. Soler-Illia, C. Sanchez, et. al., Chem. Rev., 102, 4093 (2002). 2),, 41, 31 (1999);, 62, 411 (2004);, 27, 628 (2004);, 58, 545 (2005). 3) M. Iwamoto, Y. Tanaka, Catal. Surv. from Jpn., 5, 25 (2001). 4) M. Yonemitsu, Y. Tanaka, M. Iwamoto, J. Catal., 178, 207 (1998). 5) M. Iwamoto, Y. Tanaka, J. Hirosumi, N. Kita, Chem. Lett., 2000, 226; M. Iwamoto, Y. Tanaka, J. Hirosumi, N. Kita, S. Triwahyono, Micro. Meso. Mater., 48, 271 (2001). 6) M. Iwamoto, T. Abe, Y. Tachibana, J. Mol. Catal. A, 155, 143 (2000). 7) P. Wu, M. Iwamoto, Chem. Lett., 27, 1213 (1998); P. Wu, M. Iwamoto, Chem. Mater., in press. 8) M. Iwamoto, H. Kitagawa, Y. Watanabe, Chem. Lett., 31, 814 (2002); H. Takada, Y. Watanabe, M. Iwamoto, Chem. Lett., 33, 62 (2004). 9) Y. Tanaka, N. Sawamura, M. Iwamoto, Tetrahedron Lett., 39, 9457 (1998). 10) M. Iwamoto, Y. Tanaka, N. Sawamura, S. Namba, J. Am. Chem. Soc., 125, (2003). 13
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水素移動型不斉還元触媒｜関東化学株式会社
99% yield, 96% ee (S/C = 1000) 89% yield, 99% ee (S/C = 300) >99% yield, 97% ee () X 78% yield, 95% ee () (S,S)-u cat X = C, 3, 2 = H, CH 3, F 67-100% yield, 92-98% ee (S/C = 100-1000) 100% yield dl:meso
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21 1326 1328 2002 22 4375 4377 2003 34 6 848 849 2005 9 10 15 1067 1070 1996 49 133 166 2003 1 2 2 3 4 4 1 3 23 311 313 2004 5 1 118 7604 7607 1996 15 1 33 6627 6629 2000 12 649 155 167 2003 76 23 7007
4) H. Takayama et al.: J. Med. Chem., 45, 1949 (2002). 5) H. Takayama et al.: J. Am. Chem. Soc., 112, 8635 (2000). 6) H. Takayama et al.: Tetrahedron Lett., 42, 2995 (2001). 9) M. Kitajima et al: Chem.
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substrate control reagent control Tf Tf amine H n-u Tf Et 3 3 n-u Tf Et syn Tf anti n Tf, Amine (1.3eq) (1.5eq) CH Cl, -78 C n n Z E CH -78 C, 1h; 0 C, 1h n H Triflate Et Tf n-u Tf c-pen Tf Tf Amine Yield
Precisely Designed Catalysts News Letter Vol. 5 May, 2016
recisely Designed Catalysts ews Letter Vol. 5 May, 2016 E-mail: sawamura@sci.hokudai.ac.jp Silica-SMA Silica-TI S-T Figure 1 Si 3 Si Si Si Si 2 Silica-SMA Si 3 Si Si Si Si 2 Silica-TI t Bu S S S-T t Bu
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2004 3 3 2 3 4 5 6 7 8 9 10 T. Ito, A. Yamamoto, et al., J. Chem. Soc., Chem. Commun., 136 (1974) J. Chem. Soc., Dalton Trans., 1783 (1974) J. Chem. Soc., Dalton Trans., 1398 (1975) 11 T.Ito, A. Yamamoto,
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Gymnodinium breve 1 2 3 4 Gambierdiscus toxicus 4 trans 1 Nicolaou 2 1 2 Rainier CTX3C C A K B C J D E F I G K J 1 I G Na 3 S F A B C D E C B A Na 3 S D C 2 3 W X Y V Z U A' T F' E' D' C' B' S R 4 Q P
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1) K. J. Laidler, "Reaction Kinetics", Vol. II, Pergamon Press, New York (1963) Chap. 1 ; P. G. Ashmore, "Catalysis and Inhibition of Chemical Reactions", Butterworths, London (1963) Chap. 7, p. 185. 2)
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254nm UV TiO 2 20nm :Sr 5 Ta 4 O 15 3 4 KEY-1 KEY-2 (Ti,Nb,Ta) 5 KEY-1 KEY-2 6 7 NiO/ Sr 2 Ta 2 O 7 mmol h -1 g -1 20 15 10 5 H 2 O 2 H 2 O 2 0 0 2 4 6 8 10 12 NiO/Sr 2 Ta 2 O 7 The synthesis of photocatalysts
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M (emu/g) C 2, 8, 9, 10 C-1 Fe 3 O 4 A, SL B, NSRRC C, D, E, F A, B, B, C, Yen-Fa Liao C, Ku-Ding Tsuei C, D, D, E, F, A Fe 3 O 4 120K MIT V 2 O 3 MIT Cu-doped Fe3O4 NCs MIT [1] Fe 3 O 4 MIT Cu V 2 O 3
Fig. ph Si-O-Na H O Si- Na OH Si-O-Si OH Si-O Si-OH Si-O-Si Si-O Si-O Si-OH Si-OH Si-O-Si H O 6
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NTBI = nontransferrin-bound iron NTBI DNA H DNA 2 NTBI NTBI NTBI NTBI NTBI NTBI (nta) (nta) (nta) NTBI (nta) (nta) NTBI (nta)ntbi Fe-(nta) (nta) N(CH 2 CH) 3 HCCH 2 NHCH 2 CH 2 NHCH 2 CH (HCCH 2 ) 2 NH
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J. Jpn. Soc. Colour Mater., 79 [3], (2006) Anthocyanins : Structural Diversity, Color, and in Vivo Behavior Yuko NAKAGAWA, Takashi ICHIYANAGI,
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X X X-Ray Fluorescence Analysis on Environmental Standard Reference Materials with a Dry Battery X-Ray Generator Hideshi ISHII, Hiroya MIYAUCHI, Tadashi HIOKI and Jun KAWAI Copyright The Discussion Group
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DEAD TPP A Et C C Et Et C C Et 2 A A ex. ucleophiles (A) P 3 P 3 1 xygen itrogen Carbon Sulfur C 3 S Ts Tf Scheme 1. TPP DEAD TPP DEAD redox condensation Walden Bz Tf DEAD-TPP 87% Tf Bz Scheme 2. pk a
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2 FIG. 1: : n FIG. 2: : n (Ch h ) N T B Ch h n(z) = (sin ϵ cos ω(z), sin ϵ sin ω(z), cos ϵ), (1) 1968 Meyer [5] 50 N T B Ch h [4] N T B 10 nm Ch h 1 µ
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: (Dated: February 5, 2016), (Ch), (Oblique Helicoidal) (Ch H ), Twist-bend (N T B ) I. (chiral: ) (achiral) (n) (Ch) (N ) 1996 [1] [2] 2013 (N T B ) [3] 2014 [4] (oblique helicoid) 2016 1 29 Electronic
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pp. D- D-DAO DAO D- D- D- D- o- DAO-D- D-DAO DAO Hans Krebs FAD X DAO DAO DAO D- Structure and reaction mechanism of D-amino acid oxidase Yasuzo Nishina School of Health Sciences, Kumamoto University,
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67 1 Landau Damping and RF Current Drive Kazuya UEHARA* 1 Abstract The current drive due to the rf travelling wave has been available to sustain the plasma current of tokamaks aiming the stational operation.
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Photochemical Primary Processes of the Exciplex Tadashi OKADA Department of Chemistry, Faculty of Engineering Science, Osaka University, Machikaneyama, Toyonaka 560 (Received July 3, 1984) 1 )
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1) Y. Kobuke, K. Hanji, K. Horiguchi, M. Asada, Y. Nakayama, J. Furukawa, J. Am. Chem. Soc., 98, 7414(1976). 2) S. Yoshida, S. Hayano, J. Memb. Sci., 11, 157(1982). 3) J. D. Lamb, J. J. Christensen, J.
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1 効率的な不斉触媒反応を可能に する新しい C 配位子の開発 関西大学化学生命工学部化学 物質工学科 准教授坂口聡 新型インフルエンザ治療薬 タミフル オセルタミビルリン酸塩 ロッシュ社による製造法 シキミ酸 Ms Et Et V. Farina, J. D. Brown, Angew. Chem., Int. Ed. 2006, 45, 7330. 2 タミフルの新合成法 + C 2 C 2 CF
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クロスカップリング用高活性ボロン酸 誘導体 有機トリオールボレート塩 北海道大学大学院工学研究院 フロンティア化学教育研究センター 特任准教授山本靖典 従来技術とその問題点 既にクロスカップリング反応をはじめ触媒的有機合成には有機ボロン酸誘導体が多用されるが 電子求引基を有するボロン酸やヘテロ芳香族ボロン酸は加水分解による脱ホウ素化が起こるため 塩基水溶液中行われる触媒反応において収率が極端に低下する問題があり
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上原記念生命科学財団研究報告集, 25 (2011) 6. 新規多点制御型有機分子触媒の創製を基盤とするドミノ型反応の開発 笹井宏明 Key words: 不斉有機分子触媒, イソインドリン, テトラヒドロピリジン, ドミノ反応, 二重活性化 大阪大学産業科学研究所機能物質科学研究分野 緒言連続する反応を一つの容器内で単一の操作で進行させるドミノ型反応は, 多段階反応における中間体の単離精製を必要とせず,
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