Itoh Group Literature Review

Nicola Giri, Mario G. Del Pópolo, Gavin Melaugh, Rebecca L. Greenaway, Klaus Rätzke, Tönjes Koschine, Laure Pison, Margarida F. Costa Gomes, Andrew I. Cooper & Stuart L. James Nature 527, 216–220 (12 November 2015) doi:10.1038/nature16072 Affiliations   Nicola Giri and Stuart L. James: Queen’s University Belfast, UK Andrew I. Cooper: University of Liverpool, UK Abstract Porous solids such as zeolites1 and metal–organic frameworks2, 3 are useful in molecular separation and in catalysis, but their solid nature can impose limitations. For example, liquid solvents, rather than porous solids, are the most mature technology for post-combustion capture of carbon dioxide because liquid circulation systems are more easily retrofitted to existing plants. Solid porous adsorbents offer major benefits, such as lower energy penalties in adsorption–desorption cycles4, but they are difficult to implement in conventional flow processes. Mat...

Nature Chemistry 7, 653 (2015).  doi:10.1038/nchem.2285 Authors: Alison R. H. Narayan, Gonzalo Jiménez-Osés, Peng Liu, Solymar Negretti, Wanxiang Zhao, Michael M. Gilbert, Raghunath O. Ramabhadran, Yun-Fang Yang, Lawrence R. Furan, Zhe Li, Larissa M. Podust, John Montgomery, K. N. Houk & David H. Sherman The reactivity of a monooxygenase (P450 PikC) has been modified through protein and substrate engineering, and applied to the oxidation of unactivated methylene C–H bonds. The protein engineering was guided by using molecular dynamics and quantum mechanical calculations to develop a predictive model for substrate scope, site selectivity and stereoselectivity of the C–H hydroxylation. 過去にC. White らは、基質の立体的な込み具合と、１級か２級かなど電子的な要因を注意深く検討することで、複雑な化合物でも位置特異的な水酸化反応がおこなえる事を示しました(Science, 2010, 327, 566)。触媒としてcis-4配位の鉄錯体を、酸化剤として過酸化水素を用いて用いています。 この研究では、そのような先例をふまえ、錯体触媒では酸化が難しい位置の水酸化が、タンパク質という土台を使う事で可能になるというコンセプトです（下図 Figure 1、赤色領域）。 とはいえ、無置換アルキルではさすがに無理です。カルボン酸を配向基として用いて...

Nicolas Le Poul   § ,  Yves Le Mest   * § ,  Ivan Jabin   * ‡ , and  Olivia Reinaud   * † †  Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Sorbonne Paris Cité,  Université Paris Descartes, CNRS UMR 8601 , 45 Rue des Saints Pères, 75006 Paris,  France ‡  Laboratoire de Chimie Organique,  Université Libre de Bruxelles (ULB) , Avenue F. Roosevelt 50, CP160/06, B-1050 Brussels,  Belgium §  Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique,  CNRS UMR 6521, Université de Bretagne Occidentale , 6 Avenue Le Gorgeu, 29238 Brest,  France Acc. Chem. Res. , Article ASAP DOI:  10.1021/acs.accounts.5b00152 Publication Date (Web): June 23, 2015 Copyright © 2015 American Chemical Society *E-mail:  yves.lemest@univ-brest.fr ., *E-mail:  ijabin@ulb.ac.be ., *E-mail:  olivia.reinaud@parisdescartes.fr .  Special Issue Published...

ScienceDirect Publication: Coordination Chemistry Reviews Publication date: Source: Coordination Chemistry Reviews Author(s): Marie Hoarau , Christelle Hureau , Emmanuel Gras , Peter Faller http://www.sciencedirect.com/science/article/pii/S0010854515001903 Graphical abstract Abstract: Artificial metalloenzymes, with their high selectivity and specificity combined with a wide scope of reactivity and substrates, constitute an original approach for catalyst development. Different strategies have been proposed for their elaboration, proceeding from modification of natural enzymes using bioengineering methods to de novo protein design. Another bio-inspired methodology for the development of hybrid catalysts consists in the incorporation of coordination complexes into biomolecules, with the aim to upgrade their catalytic abilities. In these systems, the reaction performed by the naked catalyst is modulated by the well-def...

Pia Bonakdarzadeh   † ,  Filip Topić   † ,  Elina Kalenius   † ,  Sandip Bhowmik   † ,  Sota Sato   ‡ ,  Michael Groessl § ,  Richard Knochenmuss   § , and  Kari Rissanen   * † †   University of Jyväskylä , Department of Chemistry, Nanoscience Center, P.O. Box 35, FI-40014, University of Jyväskylä,  Finland ‡  AIMR, Department of Chemistry, and JST ERATO,  Tohoku University , Aoba-ku, Sendai 980-8578,  Japan §  Tofwerk AG, Uttigenstr. 22, 3600 Thun,  Switzerland Inorg. Chem. , Article ASAP DOI:  10.1021/acs.inorgchem.5b01082 Publication Date (Web): June 3, 2015 Copyright © 2015 American Chemical Society *E-mail:  kari.t.rissanen@jyu.fi . Synopsis A facile approach is presented for modification of M 6 L 4  cages. Two new  C 3 -symmetric ligands were synthesized which upon complexation with cis-protected Pd 2+  or Pt 2+  afforde...

触媒作用を有する ケージ状化合物に関する総説です。 Casey J. Brown   † ,  F. Dean Toste   * † ,  Robert G. Bergman   * † ‡ , and  Kenneth N. Raymond   * † ‡ †  Department of Chemistry,  University of California , Berkeley, California 94720-1460,  United States ‡  Division of Chemical Sciences,  Lawrence Berkeley National Laboratory , Berkeley, California 94720,  United States Chem. Rev. ,  2015 ,  115  (9), pp 3012–3035 DOI:  10.1021/cr4001226 Publication Date (Web): April 21, 2015 Copyright © 2015 American Chemical Society *(F.D.T.) E-mail  fdtoste@berkeley.edu ., *(R.G.B.) E-mail  rbergman@berkeley.edu ., *(K.N.R.) E-mail  raymond@socrates.berkeley.edu . Table of Contents 1. Introduction 2. Early Examples of Supramolecular Hosts in Chemistry and Catalysis 3. Metallosupramolecular Hosts 3.1. Host Design and Synthesis 3.2. Stoichiometric and Catalytic Chemistry in Supramolecular C...

Angewandte Chemie International Edition  by Daniel M. Wood, Wenjing Meng, Tanya K. Ronson, Artur R. Stefankiewicz, Jeremy K. M. Sanders, Jonathan R. Nitschke  /   10d   //   keep unread   //   hide   //   preview Abstract The combination of a bent diamino(nickel(II) porphyrin) with 2-formylpyridine and Fe II  yielded an Fe II 4 L 6  cage. Upon treatment with the fullerenes C 60  or C 70 , this cage was found to transform into a new host–guest complex incorporating three Fe II  centers and four porphyrin ligands, in an arrangement that is hypothesized to maximize π interactions between the porphyrin units of the host and the fullerene guest bound within its central cavity. The new complex shows coordinative unsaturation at one of the Fe II  centers as the result of the incommensurate metal-to-ligand ratio, which enabled the preparation of a heterometallic cone-shaped Cu I F...

Xue-Li He   ,  Yun-Ping Liu   ,  Kai-Ning Gong   ,  Zhan-Gang Han   * , and  Xue-Liang Zhai College of Chemistry & Material Science,  Hebei Normal University , Shijiazhuang, Hebei 050024,  China Synopsis A host−guest system of an arsenic−vanadium cluster is constructed and exhibits an efficient heterogeneous catalytic performance for the electron-transfer reduction of CrVI using formic acid at ambient temperature. Abstract Polyanionic cluster [β-As 8 V 14 O 42 (H 2 O)] 4–  is well embedded in a large porous eight-membered cationic ring of the copper ligand, giving a stable host–guest supramolecular system. The assembly exhibits an efficient heterogeneous catalytic performance for the reduction of Cr VI using formic acid at ambient temperature.

Susanne Löffler   † ,  Jens Lübben   † ,  Lennard Krause † ,  Dietmar Stalke   † ,  Birger Dittrich   ‡ , and  Guido H. Clever   * † †  Institute of Inorganic Chemistry,  Georg-August-University Göttingen , Tammannstraße 4, 37077 Göttingen,  Germany ‡  Institute of Inorganic and Applied Chemistry,  Univ. of Hamburg , Martin-Luther-King-Platz 6, 20146 Hamburg,  Germany Molecular encapsulation processes under the control of an external trigger play a major role in biological signal transduction processes and enzyme catalysis. Here, we present an artificial mimic of a controllable host system that forms via self-assembly from a simple bis-monodentate ligand and Pd(II) cations. The resulting interpenetrated double cage features three consecutive pockets which initially contain one tetrafluoroborate anion, each. Activation of this host system with two halide anions triggers a conformational change th...

C. Michael McGuirk   † ,  Michael J. Katz   † ,  Charlotte L. Stern   † ,  Amy A. Sarjeant   † ,  Joseph T. Hupp   * † ,  Omar K. Farha   * † ‡ , and  Chad A. Mirkin   * † †  Department of Chemistry and the International Institute for Nanotechnology,  Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113,  United States ‡   Department of Chemistry, Faculty of Science,   King Abdulaziz University , Jeddah,   Saudi Arabia Abstract Herein, we demonstrate that the incorporation of an acidic hydrogen-bond-donating squaramide moiety into a porous UiO-67 metal–organic framework (MOF) derivative leads to dramatic acceleration of the biorelevant Friedel–Crafts reaction between indole and β-nitrostyrene. In comparison, it is shown that free squaramide derivatives, not incorporated into MOF architectures, have no catalytic activity. Additionally, using the UiO-67 templat...

なかなか大きなケージです。DOSY、AFM、ESI-Massにより、同定しています。 Dr. Peter D. Frischmann, Valentin Kunz, Dr. Vladimir Stepanenko and Prof. Dr. Frank Würthner Article first published online: 12 JAN 2015 | DOI: 10.1002/chem.201405866 Tetrahedron versus helicate, a battle of the giants!  A luminescent tetrahedron with >4 nm perylene bisimide (PBI) dye edges and Zn II vertices has been synthesized providing insight into design rules for constructing large photofunctional metallosupramoleculer hosts. Abstract Full Article (HTML) Enhanced Article (HTML) PDF(1163K) References Supporting Information

Dr. Nema Hafezi, Dr. James M. Holcroft, Dr. Karel J. Hartlieb, Edward J. Dale, Dr. Nicolaas A. Vermeulen, Charlotte L. Stern, Dr. Amy A. Sarjeant and Prof. J. Fraser Stoddart Article first published online: 19 NOV 2014 | DOI: 10.1002/anie.201408400 The ins and outs : A hexacationic macrobicyclic receptor comprised of pyridinium units fused together by electron-poor triazine rings has been shown to be a good receptor for polycyclic aromatic hydrocarbons. The lower than expected association constant for the PF 6 −  salt with pyrene is attributed to the PF 6 − counterions fleetingly occupying the cavity. X-ray crystallography confirmed the presence of a PF 6 −  ion in its cavity. Abstract Full Article (HTML) Enhanced Article (HTML) PDF(1735K) References Supporting Information

Dr. Daishi Fujita, Hiroyuki Yokoyama, Dr. Yoshihiro Ueda, Dr. Sota Sato and Prof. Dr. Makoto Fujita Article first published online: 7 NOV 2014 | DOI: 10.1002/anie.201409216 Geometrically dictated : Due to the geometrically restricted number of possible structures, the intermediates of self-assembly are rather relatively ordered than a chaotic mixture of numerous species. Two prominent metastable intermediates, M 8 L 16  and M 9 L 18 , are well characterized during the self-assembly of an M 12 L 24  cuboctahedral complex. Abstract Full Article (HTML) Enhanced Article (HTML) PDF(979K) References Supporting Information

William M. Hart-Cooper , a      Chen Zhao , a      Rebecca M. Triano , a    Parastou Yaghoubi , a      Haxel Lionel Ozores , a      Kristen N. Burford , a    F. Dean Toste , * a      Robert G. Bergman * a  and   Kenneth N. Raymond * a    Show Affiliations Chem. Sci. , 2015, Advance Article DOI:  10.1039/C4SC02735C Received 05 Sep 2014, Accepted 18 Nov 2014 First published online 28 Nov 2014 The effect of host structure on the selectivity and mechanism of intramolecular Prins reactions is evaluated using K 12 Ga 4 L 6  tetrahedral catalysts. The host structure was varied by modifying the structure of the chelating moieties and the size of the aromatic spacers. While variation in chelator substituents was generally observed to affect changes in rate but not selectivity, changing the host spacer afforded differences in efficiency and product d...

Yusuke Okazawa   ,  Kei Kondo   ,  Munetaka Akita   , and  Michito Yoshizawa   * Chemical Resources Laboratory,  Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503,  Japan J. Am. Chem. Soc. , Article ASAP DOI:  10.1021/ja511463k Publication Date (Web): December 22, 2014 Copyright © 2014 American Chemical Society Abstract V-shaped polyaromatic amphiphiles with phenanthrene or naphthalene rings spontaneously and quantitatively formed micelle-like nanocapsules in water at room temperature. In contrast to usual polyaromatic aggregates with weak fluorescent properties, the new capsules providing spherical polyaromatic shells with diameters of ∼2 nm show strong fluorescent emissions due to an aggregation-induced enhanced emission (AIEE) effect and moreover encapsulate a fluorescent coumarin dye to generate highly emissive host–guest composites. View:  ACS ActiveView PDF  |  PDF...