1
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Banjo S, Nakata K, Nakasuji E, Yasui S, Chida N, Sato T. Copper-Catalyzed Electrophilic Enamidation Using Dioxazolones through Hydrozirconation of Alkynes. Org Lett 2022; 24:8662-8666. [DOI: 10.1021/acs.orglett.2c03497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Shona Banjo
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Keisuke Nakata
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Eiko Nakasuji
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Soichiro Yasui
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
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2
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A competetive way to low-viscosity PAO base stocks via heterocene-catalyzed oligomerization of dec-1-ene. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Patil HR, Karthikeyan S, Kote V, Sengupta P, Samanta P, Kadam P, Venkateswaran N, Gupta VK. An insight into Ziegler–Natta catalyst active site distribution for polyolefins: application of jitter differential evolution. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04107-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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The legacy of Ei-ichi Negishi: Eternal optimism and excellence. Chem 2021. [DOI: 10.1016/j.chempr.2021.08.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Hostmann T, Neveselý T, Gilmour R. Illuminating anti-hydrozirconation: controlled geometric isomerization of an organometallic species. Chem Sci 2021; 12:10643-10648. [PMID: 34447557 PMCID: PMC8356810 DOI: 10.1039/d1sc02454j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/07/2021] [Indexed: 12/14/2022] Open
Abstract
A general strategy to enable the formal anti-hydrozirconation of arylacetylenes is reported that merges cis-hydrometallation using the Schwartz Reagent (Cp2ZrHCl) with a subsequent light-mediated geometric isomerization at λ = 400 nm. Mechanistic delineation of the contra-thermodynamic isomerization step indicates that a minor reaction product functions as an efficient in situ generated photocatalyst. Coupling of the E-vinyl zirconium species with an alkyne unit generates a conjugated diene: this has been leveraged as a selective energy transfer catalyst to enable E → Z isomerization of an organometallic species. Through an Umpolung metal-halogen exchange process (Cl, Br, I), synthetically useful vinyl halides can be generated (up to Z : E = 90 : 10). This enabling platform provides a strategy to access nucleophilic and electrophilic alkene fragments in both geometric forms from simple arylacetylenes.
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Affiliation(s)
- Theresa Hostmann
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Tomáš Neveselý
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Ryan Gilmour
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
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6
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Vaccari J, González-Soria MJ, Carter N, Maciá B. Catalytic Enantioselective Addition of Alkylzirconium Reagents to Aliphatic Aldehydes. Molecules 2021; 26:molecules26154471. [PMID: 34361623 PMCID: PMC8347741 DOI: 10.3390/molecules26154471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/20/2021] [Accepted: 07/20/2021] [Indexed: 11/25/2022] Open
Abstract
A catalytic methodology for the enantioselective addition of alkylzirconium reagents to aliphatic aldehydes is reported here. The versatile and readily accessible chiral Ph-BINMOL ligand, in the presence of Ti(OiPr)4 and a zinc salt, facilitates the reaction, which proceeds under mild conditions and is compatible with functionalized nucleophiles. The alkylzirconium reagents are conveniently generated in situ by hydrozirconation of alkenes with the Schwartz reagent. This work is a continuation of our previous work on aromatic aldehydes.
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7
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Nifant'ev IE, Vinogradov AA, Vinogradov AA, Ivchenko PV. Alternative mechanistic interpretation for unconventional catalytic behaviour of triisobutylaluminium-activated heterocenes in ethylene polymerization. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.07.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Ramazanov IR, Kadikova RN, Amirova AK, Mozgovoj OS, Dzhemilev UM. Cp 2ZrCl 2 – Et 3Al reagent system in the homo-coupling of trimethylsilyl-substituted alkynes. RSC Adv 2021; 11:39518-39522. [PMID: 35492468 PMCID: PMC9044544 DOI: 10.1039/d1ra08268j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 11/21/2022] Open
Abstract
The reaction of trimethylsilyl-substituted alkynes with 0.5 equivalents of Cp2ZrCl2 and 1 equivalent of Et3Al in toluene at room temperature gives products of the homo-coupling in good yield.
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Affiliation(s)
- Ilfir R. Ramazanov
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| | - Rita N. Kadikova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| | - Aliya K. Amirova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| | - Oleg S. Mozgovoj
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
| | - Usein M. Dzhemilev
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
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9
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Minami Y, Konishi A, Yasuda M. Synthesis of α-Alkenyl α,β-Unsaturated Ketones via Dehydrogermylation of Oxagermacycles with Regeneration of the Germanium(II) Species. Org Lett 2019; 21:9818-9823. [PMID: 31682128 DOI: 10.1021/acs.orglett.9b03454] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of α-alkenyl α,β-unsaturated ketones using germanium(II) salts is reported. Oxagermacycles derived from α,β-unsaturated ketones with germanium(II) salts and aldehydes can be transformed into α-alkenyl α,β-unsaturated ketones. Ammonium salts promoted the elimination of Ge(II) species to afford the two classes of α-alkenyl α,β-unsaturated ketones in good yields. The α-alkenyl α,β-unsaturated ketones are precursors for multisubstituted heterocycles.
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10
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Menger M, Christmann M. Formal synthesis of actinoranone using a one-pot semipinacol rearrangement/Wittig reaction. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Lam E, Copéret C. Understanding Trends in 27
Al Chemical Shifts and Quadrupolar Coupling Constants in Chloroalkyl Aluminum [AlCl
x
(Me)3 − x
]
n
= 1 or 2
Compounds. Helv Chim Acta 2018. [DOI: 10.1002/hlca.201800120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Erwin Lam
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1 - 5 8093 Zürich Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir Prelog Weg 1 - 5 8093 Zürich Switzerland
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12
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Catalytic Enantioselective Addition of Organozirconium Reagents to Aldehydes. Molecules 2018; 23:molecules23040961. [PMID: 29677123 PMCID: PMC6017622 DOI: 10.3390/molecules23040961] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 04/17/2018] [Accepted: 04/17/2018] [Indexed: 11/17/2022] Open
Abstract
A catalytic enantioselective addition reaction of alkylzirconium species to aromatic aldehydes is reported. The reaction, facilitated by a chiral nonracemic diol ligand complex with Ti(OiPr)₄, proceeds under mild and convenient conditions, and no premade organometallic reagents are required since the alkylzirconium nucleophiles are generated in situ by hydrozirconation of alkenes with the Schwartz reagent. The methodology is compatible with functionalized nucleophiles and a broad range of aromatic aldehydes.
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13
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Bruffaerts J, Vasseur A, Singh S, Masarwa A, Didier D, Oskar L, Perrin L, Eisenstein O, Marek I. Zirconocene-Mediated Selective C-C Bond Cleavage of Strained Carbocycles: Scope and Mechanism. J Org Chem 2018. [PMID: 29537856 DOI: 10.1021/acs.joc.7b03115] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Several approaches using organozirconocene species for the remote cleavage of strained three-membered ring carbocycles are described. ω-Ene polysubstituted cyclopropanes, alkylidenecyclopropanes, ω-ene spiro[2.2]pentanes, and ω-ene cyclopropyl methyl ethers were successfully transformed into stereodefined organometallic intermediates, allowing an easy access to highly stereoenriched acyclic scaffolds in good yields and, in most cases, excellent selectivities. DFT calculations and isotopic labeling experiments were performed to delineate the origin of the obtained chemo- and stereoselectivities, demonstrating the importance of microreversibility.
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Affiliation(s)
- Jeffrey Bruffaerts
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 3200009 , Israel
| | - Alexandre Vasseur
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 3200009 , Israel
| | - Sukhdev Singh
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 3200009 , Israel
| | - Ahmad Masarwa
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 3200009 , Israel
| | - Dorian Didier
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 3200009 , Israel
| | - Liron Oskar
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 3200009 , Israel
| | - Lionel Perrin
- CPE Lyon, INSA Lyon, ICBMS, CNRS UMR 5246 , Université de Lyon, Université Claude Bernard Lyon 1 , Equipe ITEMM, Bât. Curien, 43 Bd. du 11 Novembre 1918 , 69622 Villeurbanne , France
| | - Odile Eisenstein
- Institut Charles Gerhardt, UMR 5253, CNRS-UM-ENSCM , Université de Montpellier , cc 1501, Place E. Bataillon , 34095 Montpellier , France
| | - Ilan Marek
- The Mallat Family Laboratory of Organic Chemistry, Schulich Faculty of Chemistry , Technion-Israel Institute of Technology , Haifa 3200009 , Israel
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14
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Ma W, Yu C, Chen T, Xu L, Zhang WX, Xi Z. Metallacyclopentadienes: synthesis, structure and reactivity. Chem Soc Rev 2018; 46:1160-1192. [PMID: 28119972 DOI: 10.1039/c6cs00525j] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Metallacyclopentadienes, which possess two M-C(sp2) bonds and feature the structure of M(C[upper bond 1 start]R1[double bond, length as m-dash]CR2-CR3[double bond, length as m-dash]C[upper bond 1 end]R4), are an important class of five-membered metallacycles. They are considered as both reactive intermediates in the stoichiometric and catalytic transformations of organic molecules and useful precursors to main group element compounds, and have received considerable attention in organometallic chemistry, coordination chemistry and synthetic organic chemistry over the past six decades because of their unique metallacyclic structure. This review comprehensively presents the synthesis, structure and reactivity of the s-, p-, d- and f-block metallacyclopentadienes distributed in the whole periodic table. In addition, their application in synthetic organic chemistry and polymer chemistry is summarized. This review aims to be beneficial for the design and synthesis of novel metallacyclopentadienes, and for promoting the rapid development of metallacyclic chemistry.
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Affiliation(s)
- Wangyang Ma
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Chao Yu
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Tianyang Chen
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Ling Xu
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China. and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China.
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15
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Alkene-Zipper Catalyzed Selective and Remote Retro-ene Reaction of Alkenyl Cyclopropylcarbinol. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701481] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Romero N, Dufrois Q, Vendier L, Dinoi C, Etienne M. Coupling and Dearomatization of Pyridines at a Transient η2
-Cyclopropene/Bicyclobutane Zirconocene Complex. Chemistry 2017; 23:15766-15774. [DOI: 10.1002/chem.201703371] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Nuria Romero
- CNRS; LCC (Laboratoire de Chimie de Coordination); 205, route de Narbonne, BP44099 31077 Toulouse France
- Université de Toulouse; UPS, INPT; LCC; 31077 Toulouse France
- Present address: Departament de Química; Universitat Autònoma de Barcelona; Cerdanyola del Vallès 08193 Barcelona Spain
| | - Quentin Dufrois
- CNRS; LCC (Laboratoire de Chimie de Coordination); 205, route de Narbonne, BP44099 31077 Toulouse France
- Université de Toulouse; UPS, INPT; LCC; 31077 Toulouse France
| | - Laure Vendier
- CNRS; LCC (Laboratoire de Chimie de Coordination); 205, route de Narbonne, BP44099 31077 Toulouse France
- Université de Toulouse; UPS, INPT; LCC; 31077 Toulouse France
| | - Chiara Dinoi
- CNRS; LCC (Laboratoire de Chimie de Coordination); 205, route de Narbonne, BP44099 31077 Toulouse France
- Université de Toulouse; UPS, INPT; LCC; 31077 Toulouse France
- Present address: LPCNO INSA; 135 Avenue de Rangueil 31077 Toulouse France
| | - Michel Etienne
- CNRS; LCC (Laboratoire de Chimie de Coordination); 205, route de Narbonne, BP44099 31077 Toulouse France
- Université de Toulouse; UPS, INPT; LCC; 31077 Toulouse France
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17
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Xu S, Wang C, Komiyama M, Tomonari Y, Negishi EI. Asymmetric Synthesis of Chiral Cyclopentanes Bearing an All-Carbon Quaternary Stereocenter by Zirconium-Catalyzed Double Carboalumination. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shiqing Xu
- Herbert C. Brown Laboratories of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47906 USA
| | - Chuan Wang
- Herbert C. Brown Laboratories of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47906 USA
- Department of Chemistry; University of Science and Technology of China; 96 Jinzhai Road, Heifei Anhui 230026 P.R. China
| | - Masato Komiyama
- Herbert C. Brown Laboratories of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47906 USA
| | - Yasuhiko Tomonari
- Herbert C. Brown Laboratories of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47906 USA
| | - Ei-ichi Negishi
- Herbert C. Brown Laboratories of Chemistry; Purdue University; 560 Oval Drive West Lafayette IN 47906 USA
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18
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Xu S, Wang C, Komiyama M, Tomonari Y, Negishi EI. Asymmetric Synthesis of Chiral Cyclopentanes Bearing an All-Carbon Quaternary Stereocenter by Zirconium-Catalyzed Double Carboalumination. Angew Chem Int Ed Engl 2017; 56:11502-11505. [PMID: 28726306 DOI: 10.1002/anie.201706198] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 07/12/2017] [Indexed: 11/10/2022]
Abstract
Herein, we report a zirconium-catalyzed enantio- and diastereoselective inter/intramolecular double carboalumination of unactivated 2-substituted 1,5-dienes, which provides efficient and direct access to chiral cyclopentanes through the generation of two stereocenters, including one all-carbon quaternary stereocenter, generally with excellent diastereo- and high enantioselectivity. This tandem carboalumination process creates two new C-C bonds as well as one C-Al bond, which can be oxidized in situ with O2 or hydrolyzed. Furthermore, the obtained chiral cyclopentanes can be readily functionalized to provide various chiral compounds.
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Affiliation(s)
- Shiqing Xu
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47906, USA
| | - Chuan Wang
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47906, USA.,Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Heifei, Anhui, 230026, P.R. China
| | - Masato Komiyama
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47906, USA
| | - Yasuhiko Tomonari
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47906, USA
| | - Ei-Ichi Negishi
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47906, USA
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19
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Ai Y, Ye N, Wang Q, Yahata K, Kishi Y. Zirconium/Nickel-Mediated One-Pot Ketone Synthesis. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705520] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yanran Ai
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Ning Ye
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Qiaoyi Wang
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Kenzo Yahata
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Yoshito Kishi
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
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20
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Ai Y, Ye N, Wang Q, Yahata K, Kishi Y. Zirconium/Nickel-Mediated One-Pot Ketone Synthesis. Angew Chem Int Ed Engl 2017; 56:10791-10795. [DOI: 10.1002/anie.201705520] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Yanran Ai
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Ning Ye
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Qiaoyi Wang
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Kenzo Yahata
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Yoshito Kishi
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
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21
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Coombs JR, Morken JP. Catalytic Enantioselective Functionalization of Unactivated Terminal Alkenes. Angew Chem Int Ed Engl 2016; 55:2636-49. [PMID: 26764019 PMCID: PMC4913282 DOI: 10.1002/anie.201507151] [Citation(s) in RCA: 171] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/09/2015] [Indexed: 12/22/2022]
Abstract
Terminal alkenes are readily available functional groups which appear in α-olefins produced by the chemical industry, and they appear in the products of many contemporary synthetic reactions. While the organic transformations that apply to alkenes are amongst the most studied reactions in all of chemical synthesis, the number of reactions that apply to nonactivated terminal alkenes in a catalytic enantioselective fashion is small in number. This Minireview highlights the cases where stereocontrol in catalytic reactions of 1-alkenes is high enough to be useful for asymmetric synthesis.
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Affiliation(s)
- John R Coombs
- Department of Chemistry, Boston College, Merkert Research Labs, 2609 Beacon St., Chesnut Hill, MA, 02467, USA
| | - James P Morken
- Department of Chemistry, Boston College, Merkert Research Labs, 2609 Beacon St., Chesnut Hill, MA, 02467, USA.
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22
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Coombs JR, Morken JP. Katalytische enantioselektive Funktionalisierung von nichtaktivierten terminalen Alkenen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201507151] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- John R. Coombs
- Department of Chemistry; Boston College, Merkert Research Labs; 2609 Beacon St. Chesnut Hill MA 02467 USA
| | - James P. Morken
- Department of Chemistry; Boston College, Merkert Research Labs; 2609 Beacon St. Chesnut Hill MA 02467 USA
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23
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Morimoto H, Harada T. Catalytic Enantioselective Synthesis of Trisubstituted Secondary Allylic Alcohols Starting from Terminal Alkynes and Aldehydes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500910] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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25
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Topolovčan N, Panov I, Kotora M. Reaction of Bicyclic Zirconacyclopentenes with Aldehydes and a Potential Pathway to Condensed 5-7-6(Ar) Ring Systems. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500248] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Conner ML, Xu Y, Brown MK. Catalytic enantioselective allenoate-alkene [2 + 2] cycloadditions. J Am Chem Soc 2015; 137:3482-5. [PMID: 25756948 DOI: 10.1021/jacs.5b00563] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalytic enantioselective [2 + 2] cycloadditions between allenoates and alkenes is disclosed. The method functions well for a variety of alkenes, and the products are generated with excellent levels of enantioselectivity. One of the most significant aspects of the present method is that unactivated alkenes are suitable substrates for this method, which is distinctly different from nearly all other catalytic enantioselective [2 + 2] cycloaddition methods.
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Affiliation(s)
- Michael L Conner
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Yao Xu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - M Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States
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27
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Burns M, Essafi S, Bame JR, Bull SP, Webster MP, Balieu S, Dale JW, Butts CP, Harvey JN, Aggarwal VK. Assembly-line synthesis of organic molecules with tailored shapes. Nature 2014; 513:183-8. [PMID: 25209797 PMCID: PMC4167605 DOI: 10.1038/nature13711] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 07/23/2014] [Indexed: 12/24/2022]
Abstract
Molecular assembly lines, where molecules undergo iterative processes involving chain elongation and functional group manipulation are hallmarks of many processes found in Nature. We have sought to emulate Nature in the development of our own molecular assembly line through iterative homologations of boronic esters. Here we report a reagent (α-lithioethyl triispopropylbenzoate) which inserts into carbon-boron bonds with exceptionally high fidelity and stereocontrol. Through repeated iteration we have converted a simple boronic ester into a complex molecule (a carbon chain with ten contiguous methyl groups) with remarkably high precision over its length, its stereochemistry and therefore its shape. Different stereoisomers were targeted and it was found that they adopted different shapes (helical/linear) according to their stereochemistry. This work should now enable scientists to rationally design and create molecules with predictable shape, which could have an impact in all areas of molecular sciences where bespoke molecules are required.
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Affiliation(s)
- Matthew Burns
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Stéphanie Essafi
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Jessica R Bame
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Stephanie P Bull
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Matthew P Webster
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Sébastien Balieu
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - James W Dale
- Novartis Horsham Research Centre, Wimblehurst Road, Horsham, West Sussex RH13 5AB, UK
| | - Craig P Butts
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Jeremy N Harvey
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
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28
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Zhao J, Zhang S, Zhang WX, Xi Z. Coordination-induced skeletal rearrangements of zirconacyclobutene–silacyclobutene fused complexes. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.08.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Zhang WX, Xi Z. Organometallic intermediate-based organic synthesis: organo-di-lithio reagents and beyond. Org Chem Front 2014. [DOI: 10.1039/c4qo00231h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metal-mediated organic reactions have become one of the great frontiers of organic synthesis.
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Affiliation(s)
- Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
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30
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Rassadin VA, Six Y. A study of the reaction of n-BuLi with Ti(Oi-Pr)4 as a method to generate titanacyclopropane and titanacyclopropene species. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.12.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Zhao J, Zhang S, Zhang WX, Xi Z. Reaction of Titanacyclobutene–Silacyclobutene Fused-Ring Complexes with Nitriles via Formal Insertion of the C–N Triple Bond of Nitrile into the Silacyclobutene Ring. Organometallics 2013. [DOI: 10.1021/om401065c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jing Zhao
- Beijing National Laboratory of Molecular Sciences
(BNLMS), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People’s Republic of China
| | - Shaoguang Zhang
- Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People’s Republic of China
| | - Wen-Xiong Zhang
- Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People’s Republic of China
| | - Zhenfeng Xi
- Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People’s Republic of China
- State Key Laboratory
of Organometallic Chemistry, Shanghai Institute of Organic Chemistry
(SIOC), Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
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32
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Synthesis of seven-membered cyclic allenes, 1-zirconacyclohepta-2,3,6-trienes, from alkynes and 1-en-3-ynes. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.05.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Yan X, Zhou Y, Xi C. Reactivity of Alkynylzirconate toward α,β-Unsaturated Carbonyl Compounds. Organometallics 2013. [DOI: 10.1021/om301176e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoyu Yan
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Yiqing Zhou
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Chanjuan Xi
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
- State
Key Laboratory of Elemento-Organic
Chemistry, Nankai University, Tianjin 300071,
People’s Republic of China
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34
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Grau E, Lesage A, Norsic S, Copéret C, Monteil V, Sautet P. Tetrahydrofuran in TiCl4/THF/MgCl2: a Non-Innocent Ligand for Supported Ziegler–Natta Polymerization Catalysts. ACS Catal 2012. [DOI: 10.1021/cs300764h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Etienne Grau
- Department
of Chemistry, ETH Zurich, Wolfgang-Pauli-Strasse
10, 8093 Zurich,
Switzerland
- Université de Lyon, Univ. Lyon 1, CPE Lyon, CNRS, Chimie Catalyse
Polymères et Procédés (C2P2), LCPP team, 43 Bd
du 11 novembre 1918, 69616 Villeurbanne, France
- Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon,
Laboratoire de Chimie, 46 Allée d’Italie, 69364 Lyon
Cedex 07, France
| | - Anne Lesage
- Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon,
Centre de RMN à Très Hauts Champs, 5 rue de la Doua,
69100 Villeurbanne, France
| | - Sébastien Norsic
- Université de Lyon, Univ. Lyon 1, CPE Lyon, CNRS, Chimie Catalyse
Polymères et Procédés (C2P2), LCPP team, 43 Bd
du 11 novembre 1918, 69616 Villeurbanne, France
| | - Christophe Copéret
- Department
of Chemistry, ETH Zurich, Wolfgang-Pauli-Strasse
10, 8093 Zurich,
Switzerland
| | - Vincent Monteil
- Université de Lyon, Univ. Lyon 1, CPE Lyon, CNRS, Chimie Catalyse
Polymères et Procédés (C2P2), LCPP team, 43 Bd
du 11 novembre 1918, 69616 Villeurbanne, France
| | - Philippe Sautet
- Université de Lyon, CNRS, Ecole Normale Supérieure de Lyon,
Laboratoire de Chimie, 46 Allée d’Italie, 69364 Lyon
Cedex 07, France
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35
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Zhao J, Zhang S, Zhang WX, Xi Z. Reactivity of Seven-Membered Azazirconacycloallenes and Four-Membered Zirconacycles toward Diphenylacetonitrile. Organometallics 2012. [DOI: 10.1021/om300949a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jing Zhao
- Beijing National Laboratory
of Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, People's Republic
of China
| | - Shaoguang Zhang
- Key Laboratory
of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People's Republic
of China
| | - Wen-Xiong Zhang
- Key Laboratory
of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People's Republic
of China
| | - Zhenfeng Xi
- Key Laboratory
of Bioorganic
Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People's Republic
of China
- State Key Laboratory
of Organometallic
Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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36
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Zirconocene-promoted synthesis of substituted tetrahydropyrans. TRANSIT METAL CHEM 2012. [DOI: 10.1007/s11243-012-9669-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Affiliation(s)
- Yoshihiko Yamamoto
- Department of Basic
Medicinal Sciences, Graduate School
of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya 464-8601,
Japan
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38
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Ren S, Qiu Z, Xie Z. Reaction of Zirconocene–Carboryne with Alkenes: Synthesis and Structure of Zirconacyclopentanes with a Carborane Auxiliary. Organometallics 2012. [DOI: 10.1021/om300202p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Shikuo Ren
- Department of Chemistry
and
Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Zaozao Qiu
- Department of Chemistry
and
Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry
and
Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
- State Key Laboratory of Elemento-Organic
Chemistry, Nankai University, Tianjin,
China
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39
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Kotora M, Hessler F, Eignerová B. Transition‐Metal‐Mediated or ‐Catalyzed Syntheses of Steroids and Steroid‐Like Compounds. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100921] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Martin Kotora
- Dept. of Organic and Nuclear Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12843 Praha 2, Czech Republic, Fax: +420‐221‐951‐326
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, v.v.i., Flemingovo nám. 2, 166 10 Praha 6, Czech Republic
| | - Filip Hessler
- Dept. of Organic and Nuclear Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12843 Praha 2, Czech Republic, Fax: +420‐221‐951‐326
| | - Barbara Eignerová
- Dept. of Organic and Nuclear Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 12843 Praha 2, Czech Republic, Fax: +420‐221‐951‐326
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40
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Zhang WX, Zhang S, Xi Z. Zirconocene and Si-tethered diynes: a happy match directed toward organometallic chemistry and organic synthesis. Acc Chem Res 2011; 44:541-51. [PMID: 21612215 DOI: 10.1021/ar200078e] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Characterizing reactive organometallic intermediates is critical for understanding the mechanistic aspects of metal-mediated organic reactions. Moreover, the isolation of reactive organometallic intermediates can often result in the ability to design new synthetic methods. In this Account, we outline synthetic methods that we developed for a variety of diverse Zr/Si organo-bimetallic compounds and Si/N heteroatom-organic compounds through the detailed study of zirconacyclobutene-silacyclobutene fused compounds. Two basic components are involved in this chemistry. The first is the Si-tethered diyne, which owes its rich reactive palette to the combination of the Si-C bond and the C≡C triple bond. The second is the low-valent zirconocene species Cp(2)Zr(II), which has proven very useful in organic synthesis. The reaction of these two components affords the zirconacyclobutene-silacyclobutene fused compound, which is the key reactive Zr/Si organo-bimetallic intermediate discussed here. We discuss the three types of reactions that have been developed for the zirconacyclobutene-silacyclobutene fused intermediate. The reaction with nitriles (the C≡N triple bond) is introduced in the first section. In this one-pot reaction, up to four different components can be combined: the Si-tethered diyne can be reacted with three identical nitriles, with differing nitriles, or with a nitrile and other unsaturated organic substrates such as formamides, isocyanides, acid chlorides, aldehydes, carbodiimides, and azides. Several unexpected multiring, fused Zr/Si organo-bimetallic intermediates were isolated and characterized. A wide variety of N-heterocycles, such as 5-azaindole, pyrrole, and pyrroloazepine derivatives, were obtained. We then discuss the reaction with alkynes (the C≡C triple bond). A consecutive skeletal rearrangement, differing from that observed in the reactions with nitriles, takes place in this reaction. Finally, we discuss the reaction with the C═X substrates (where X is O or N), including ketones, aldehydes, and isocyanides. Oxa- and azazirconacycles are formed via a new skeletal rearrangement. Our results show that the zirconocene and the Si-tethered diyne cooperate as a "chemical transformer" after treatment with various substrates, leading to a diverse range of cyclic Zr/Si organo-bimetallic compounds. This mechanism-derived synthesis of organometallic and organic compounds demonstrates that the investigation of metal-mediated reactions and the isolation of reactive organometallic intermediates not only contribute to the understanding of complex reactions but can also lead to the discovery of synthetically useful methods.
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Affiliation(s)
- Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Shaoguang Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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41
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Negishi EI. Magical power of transition metals: past, present, and future (Nobel Lecture). Angew Chem Int Ed Engl 2011; 50:6738-64. [PMID: 21717531 DOI: 10.1002/anie.201101380] [Citation(s) in RCA: 544] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Ei-ichi Negishi
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive,West Lafayette, IN 47907-2084, USA
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42
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Negishi EI. Die magische Kraft der Übergangsmetalle: Vergangenheit, Gegenwart und Zukunft (Nobel-Aufsatz). Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101380] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Zhao J, Zhang S, Zhang WX, Xi Z. Formation of Zirconocenes Containing Vinyl-imine and Keteniminate Species from Zirconacycles and Diphenylacetonitrile. Organometallics 2011. [DOI: 10.1021/om200404p] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jing Zhao
- Beijing National Laboratory of Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Shaoguang Zhang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Wen-Xiong Zhang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhenfeng Xi
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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44
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Camara JM, Petros RA, Norton JR. Zirconium-Catalyzed Carboalumination of α-Olefins and Chain Growth of Aluminum Alkyls: Kinetics and Mechanism. J Am Chem Soc 2011; 133:5263-73. [DOI: 10.1021/ja104032w] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- James M. Camara
- Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Robby A. Petros
- Department of Chemistry, University of North Texas, Denton, Texas 76203, United States
| | - Jack R. Norton
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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45
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Stec J, Thomas E, Dixon S, Whitby RJ. Tandem insertion of halocarbenoids and lithium acetylides into zirconacycles: a novel rearrangement to zirconium alkenylidenates by β-addition to an alkynyl zirconocene. Chemistry 2011; 17:4896-904. [PMID: 21425365 DOI: 10.1002/chem.201002962] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Indexed: 11/08/2022]
Abstract
Tandem insertion of 1,1-dihalo-1-lithio species (halocarbenoids) and lithium alkynides into zirconacyclopentenes and zirconcyclopentanes affords carbocyclic products in high yields via an unusual rearrangement that probably involves addition of an organolithium species to the β-position of a zirconium-alkyne complex to give an alkenylidene-zirconate species. A wide variety of cyclopentanoid organic structures are rapidly assembled in good yield using this multicomponent coupling. The main side reaction, which becomes exclusive in some cases, is β-hydride elimination of an intermediate cyclopentyl- or cyclopentenyl zirconocene.
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Affiliation(s)
- Jozef Stec
- School of Chemistry, University of Southampton, Highfield, Southampton, Hampshire SO17 1BJ, UK
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46
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Soueidan M, Hélion F, Namy JL, Szymoniak J. Homocoupling of aldimines mediated by zirconocene: synthesis of vicinal diamines and imidazolidines. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.075] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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47
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Zhang S, Zhang WX, Zhao J, Xi Z. Cleavage and reorganization of Zr-C/Si-C bonds leading to Zr/Si-N organometallic and heterocyclic compounds. J Am Chem Soc 2011; 132:14042-5. [PMID: 20860395 DOI: 10.1021/ja1074932] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The t-BuCN-stabilized zirconacyclopropene-azasilacyclopentadiene complexes 2 are generated in situ in high yields from the Si-tethered diynes, Cp(2)Zr(II) species, and 2 equiv of t-BuCN via a coordination-induced Zr-C/Si-C bond cleavage and reorganization. Complexes 2 have been demonstrated to be synthetically very useful. A variety of novel Zr/Si organo-bimetallic compounds and Si/N heterocyclic compounds, such as azasilacyclopentadienes, azasilacyclohexadienes, and allenylazazirconacycles, are obtained in high yields when complexes 2 are treated with ketones, carbodiimides, alkynes, elemental sulfur (S(8)), acid chlorides, or nitriles. In this chemistry, t-BuCN behaves as both an initiator and a brake/release handle to initiate and control the reaction process.
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Affiliation(s)
- Shaoguang Zhang
- Beijing National Laboratory of Molecular Sciences, College of Chemistry, Peking University, Beijing 100871, China
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48
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Erker G. Bio-Organometallic Chemistry, ansa-Metallocenes, and Frustrated Lewis Pairs: Functional Group Chemistry at the Group 4 Bent Metallocenes. Organometallics 2011. [DOI: 10.1021/om101118a] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gerhard Erker
- Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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49
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Designing Molecular Catalysts with Enhanced Lewis Acidity. ADVANCES IN CATALYSIS 2011. [DOI: 10.1016/b978-0-12-387772-7.00001-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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50
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Chen MZ, McLaughlin M, Takahashi M, Tarselli MA, Yang D, Umemura S, Micalizio GC. Preparation of stereodefined homoallylic amines from the reductive cross-coupling of allylic alcohols with imines. J Org Chem 2010; 75:8048-59. [PMID: 21069994 PMCID: PMC2993781 DOI: 10.1021/jo101535d] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Regio-, diastereo-, and enantioselective coupling reactions between imines and allylic alcohols have been developed. These coupling reactions deliver complex homoallylic amine products through a convergent C-C bond forming process that does not proceed through intermediate allylic organometallic reagents. In general, convergent coupling, by exposure of an allylic alkoxide to a preformed Ti-imine complex, occurs with allylic transposition in a predictable and stereocontrolled manner. While simple diastereoselection in these reactions is high, delivering anti-products with ≥20:1 selectivity, the organometallic transformation described is compatible with a diverse range of functionality and substrates (including aliphatic and aromatic imines, allylic silanes, trisubstituted alkenes, vinyl- and aryl halides, trifluoromethyl groups, thioethers, and aromatic heterocycles). Alkene geometry of the products is a complex function of the allylic alcohol structure and is consistent with a mechanistic proposal based on syn-carbometalation followed by syn-elimination by way of a boat-like transition state geometry. Single asymmetric coupling reactions provide a means to translate the stereochemical information of the allylic alcohol to the homoallylic amine or to control diastereoselection in the coupling reactions of achiral allylic alcohols with chiral imines. Double asymmetric coupling reactions are also described that afford a unique means to control stereoselection in these complex convergent coupling processes. Finally, empirical models are proposed that are consistent with the observed stereochemical course of these coupling reactions en route to chiral homoallylic amines possessing di- or trisubstituted alkenes and anti- or syn- relative stereochemistry at the allylic and homoallylic positions.
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Affiliation(s)
- Ming Z. Chen
- Kellogg School of Science and Technology at The Scripps Research Institute
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