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Zhang Y, Chen Y, Song M, Tan B, Jiang Y, Yan C, Jiang Y, Hu X, Zhang C, Chen W, Xu J. Total Syntheses of Calyciphylline A-Type Alkaloids (-)-10-Deoxydaphnipaxianine A, (+)-Daphlongamine E and (+)-Calyciphylline R via Late-Stage Divinyl Carbinol Rearrangements. J Am Chem Soc 2022; 144:16042-16051. [PMID: 36007885 DOI: 10.1021/jacs.2c05957] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Among the famous Daphniphyllum alkaloids family, the calyciphylline A-type subfamily has triggered particular interest from the organic synthesis community in recent years. Here, we report divergent total syntheses of three calyciphylline A-type alkaloids, namely, (-)-10-deoxydaphnipaxianine A, (+)-daphlongamine E, and (+)-calyciphylline R. Our work highlights an efficient, divergent strategy via late-stage divinyl carbinol rearrangements, including an unprecedented oxidative Nazarov electrocyclization using an unfunctionalized tertiary divinyl carbinol and an unusual allylic alcohol rearrangement. A highly efficient "donor-acceptor" platinum catalyst was used for a critical nitrile hydration step. Moreover, the power of selective amide reductions has also been showcased by novel and classic tactics.
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Affiliation(s)
- Yan Zhang
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuye Chen
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Manrong Song
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Tan
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yujia Jiang
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chongyuan Yan
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yuyang Jiang
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xinyue Hu
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chengqian Zhang
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wenqing Chen
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jing Xu
- Department of Chemistry and Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Southern University of Science and Technology, Shenzhen 518055, China
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Pototskiy RA, Kolos AV, Nelyubina YV, Perekalin DS. Rhodium Catalysts with a Chiral Cyclopentadienyl Ligand Derived from Natural R‐Myrtenal. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001029] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Roman A. Pototskiy
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova 28 119991 Moscow Russia
| | - Andrey V. Kolos
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova 28 119991 Moscow Russia
| | - Yulia V. Nelyubina
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova 28 119991 Moscow Russia
| | - Dmitry S. Perekalin
- Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova 28 119991 Moscow Russia
- Plekhanov Russian University of Economics 36 Stremyannyi pereulok 117997 Moscow Russia
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3
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Bau MA, Wiesler S, Younas SL, Streuff J. Strategies for the Synthesis of Chiral Carbon-Bridged Group IV ansa-Metallocenes. Chemistry 2019; 25:10531-10545. [PMID: 31059590 DOI: 10.1002/chem.201901505] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Indexed: 12/13/2022]
Abstract
This minireview provides a survey of the various synthetic approaches to chiral ansa-metallocenes of Ti, Zr, and Hf containing a carbon-based bridge. The individual strategies to install substitution patterns at either the cyclopentadienyl framework or the bridging unit are highlighted with focus on the progress made towards a direct preparation of single complex stereoisomers. The review further includes the discussion of potential problems such as the formation of undesired diastereomers, the threat of racemization of enantiopure material, and synthetic challenges originating from the synthesis, purification, and isolation of the target complexes. The review has been written with the goal in mind to facilitate the design and synthesis of new chiral ansa-metallocene derivatives for emerging research areas in asymmetric catalysis and organometallic chemistry.
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Affiliation(s)
- Michael A Bau
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104, Freiburg im Breisgau, Germany
| | - Stefan Wiesler
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104, Freiburg im Breisgau, Germany
| | - Sara L Younas
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104, Freiburg im Breisgau, Germany
| | - Jan Streuff
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, 79104, Freiburg im Breisgau, Germany
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4
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Kumamoto H, Imoto S, Amano M, Kuwata-Higashi N, Baba M, Mitsuya H, Odanaka Y, Shimbara Matsubayashi S, Tanaka H, Haraguchi K. Synthesis, Anti-HBV, and Anti-HIV Activities of 3'-Halogenated Bis(hydroxymethyl)-cyclopentenyladenines. ACS Med Chem Lett 2018; 9:1211-1216. [PMID: 30613328 DOI: 10.1021/acsmedchemlett.8b00374] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/09/2018] [Indexed: 12/18/2022] Open
Abstract
Synthesis of 3'-halogeno analogues (5a-d) of 9-[c-4,t-5-bis(hydroxymethyl)-cyclopent-2-en-r-1-yl]-9H-adenine (BCA, 3) was accomplished by means of dual utilization of the vinyl sulfone functional moieties in both 10 and 16 utilizing a SN2' conjugate-addition reaction and a sulfur-extrusive stannylation, respectively. Evaluation of the antiviral activities of 5a-d revealed that introduction of a halogeno-substituent into the 3'-position of (-)-BCA diminished its anti-HIV-1 activity but increased the inhibitory activity for the reverse transcriptase of HBV in that the 3'-fluorinated BCA 5d exhibited the highest activity without significant cytotoxicity.
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Affiliation(s)
- Hiroki Kumamoto
- Nihon Pharmaceutical University, 10281 Komuro, Inamachi, Kita-adachi-gun, Saitama 362-0806, Japan
| | - Shuhei Imoto
- Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Kumamoto 860-0082, Japan
| | - Masayuki Amano
- Departments of Infectious Diseases and Hematology, Kumamoto University School of Medicine, Kumamoto 860-8556, Japan
| | - Nobuyo Kuwata-Higashi
- Clinical Research Center, National Center for Global Health and Medicine, 1-21-1 Toyama Shinjuku-ku, Tokyo 162-8655, Japan
| | - Masanori Baba
- Division of Antiviral Chemotherapy, Center for Chronic Viral Diseases, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan
| | - Hiroaki Mitsuya
- Departments of Infectious Diseases and Hematology, Kumamoto University School of Medicine, Kumamoto 860-8556, Japan
- Clinical Research Center, National Center for Global Health and Medicine, 1-21-1 Toyama Shinjuku-ku, Tokyo 162-8655, Japan
- Experimental Retrovirology Section, HIV and AIDS Malignancy Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Yuki Odanaka
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | | | - Hiromichi Tanaka
- School of Pharmacy, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Kazuhiro Haraguchi
- Nihon Pharmaceutical University, 10281 Komuro, Inamachi, Kita-adachi-gun, Saitama 362-0806, Japan
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5
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Lempenauer L, Duñach E, Lemière G. Tuning the Reactivity of Functionalized Diallylic Alcohols: Brønsted versus Lewis Acid Catalysis. Chemistry 2017; 23:10285-10288. [DOI: 10.1002/chem.201702601] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Luisa Lempenauer
- Université Côte d'AzurInstitut de Chimie de Nice, CNRS, Parc Valrose 06108 Nice Cedex 2 France
| | - Elisabet Duñach
- Université Côte d'AzurInstitut de Chimie de Nice, CNRS, Parc Valrose 06108 Nice Cedex 2 France
| | - Gilles Lemière
- Université Côte d'AzurInstitut de Chimie de Nice, CNRS, Parc Valrose 06108 Nice Cedex 2 France
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New zirconocenes with 4,5,6,7-tetrahydroindene ligands. Synthesis and catalytic activity in the polymerization of ethylene and copolymerization of ethylene with hex-1-ene. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1485-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Wang Z, Xu X, Gu Z, Feng W, Qian H, Li Z, Sun X, Kwon O. Nazarov cyclization of 1,4-pentadien-3-ols: preparation of cyclopenta[b]indoles and spiro[indene-1,4'-quinoline]s. Chem Commun (Camb) 2016; 52:2811-4. [PMID: 26771024 PMCID: PMC5560599 DOI: 10.1039/c5cc08596a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The first Lewis acid-catalyzed intramolecular interrupted Nazarov cyclization of 1,4-pentadien-3-ols is described. Using FeBr3 as the catalyst, a series of new substituted cyclopenta[b]indoles was prepared-through a sequence of Nazarov cyclization, nucleophilic amination, and isomerization-with good yields and high diastereo- and regioselectivities. A similar catalytic process was also developed for the synthesis of structurally interesting spiro[indene-1,4'-quinoline]s.
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Affiliation(s)
- Zhiming Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Xingzhu Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Zhanshou Gu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Wei Feng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Houjun Qian
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Zhengyi Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Xiaoqiang Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA.
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8
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Adler Yañez RA, Kehr G, Daniliuc CG, Schirmer B, Erker G. Formation of a dihydroborole by catalytic isomerization of a divinylborane. Dalton Trans 2014; 43:10794-800. [PMID: 24882640 DOI: 10.1039/c4dt01423e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diphenylamino(divinyl)borane (1a) adds two molar equivalents of Piers' borane [HB(C6F5)2] to give the expected double hydroboration product. In contrast diisopropylamino(divinyl)borane (1b) reacts cleanly already with one molar equivalent of HB(C6F5)2 to give the α-borylated tetrahydroborole derivative 10 in good yield. Subsequent treatment of 10 with benzaldehyde proceeded by retro-hydroboration to give the hydroboration product of the aldehyde plus the dihydroborole 3b. We were able to achieve the divinylborane to dihydroborole isomerization (1b to 3b) catalytically: treatment of diisopropylamino(divinyl)borane (1b) with 15 mol% of Piers' borane at elevated temperature gave (diisopropylamino)dihydroborole 3b in good yield.
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Affiliation(s)
- Raúl A Adler Yañez
- Organisch-Chemisches Institut, Universitat Münster, Corrensstraße 40, 48149 Münster, Germany.
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9
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Spencer WT, Vaidya T, Frontier AJ. Beyond the Divinyl Ketone: Innovations in the Generation and Nazarov Cyclization of Pentadienyl Cation Intermediates. European J Org Chem 2013; 2013:10.1002/ejoc.201300134. [PMID: 24348092 PMCID: PMC3862358 DOI: 10.1002/ejoc.201300134] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Indexed: 11/09/2022]
Abstract
The requirement for new strategies for synthesizing five-membered carbocycles has driven an expansion in the study of the Nazarov cyclization. This renewed interest in the reaction has led to the discovery of several interesting new methods for generating the pentadienyl cation intermediate central to the cyclization. Methods reviewed include carbon-heteroatom ionization, functionalization of a double bond, nucleophilic addition, or electrocyclic ring opening. Additional variations employ unconventional substrates to produce novel pentacycles, such as the iso- and imino-Nazarov. Herein, we provide an overview of these unconventional, yet highly useful versions of the Nazarov cyclization.
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Affiliation(s)
- William T. Spencer
- Department of Chemistry, University of Rochester, RC Box 270216, Rochester, NY 14627
| | - Tulaza Vaidya
- Department of Chemistry and Chemical Biology, Cornell University Baker Laboratory Ithaca, NY 14853
| | - Alison J. Frontier
- Department of Chemistry, University of Rochester, RC Box 270216, Rochester, NY 14627
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10
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Asachenko AF, Kononovich DS, Zharov AN, Razavi A, Voskoboynikov AZ. Zirconium complexes bearing η5-5′,6′,7′-trihydrospiro[cycloalkane-1,4′-indenyl] ligands. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.04.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Park JH, Lee BY. Short and Efficient Synthesis of Cyclopentadithiophene and Its Dialkylated Product. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.04.1064] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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McGlacken GP, O'Brien CT, Whitwood AC, Fairlamb IJS. Chiral Mono- and Bis-annelated Cyclopentadienyl Ligands Derived from Tartaric Acid: Synthesis of [(η5-Cyclopentadienyl)RuCl(cod)] and [(η5-Cyclopentadienyl)(η6-benzene)Ru]PF6 Derivatives. Organometallics 2007. [DOI: 10.1021/om700393b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gerard P. McGlacken
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, United Kingdom
| | - Ciara T. O'Brien
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, United Kingdom
| | - Adrian C. Whitwood
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, United Kingdom
| | - Ian J. S. Fairlamb
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, United Kingdom
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13
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Vassylyev O, Panarello A, Khinast JG. Enantioselective hydrogenations with chiral titanocenes. Molecules 2005; 10:587-619. [PMID: 18007330 PMCID: PMC6147634 DOI: 10.3390/10060587] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2004] [Accepted: 10/08/2004] [Indexed: 11/17/2022] Open
Abstract
In this review article chiral titanocenes and their application for the enantioselective hydrogenations of different unsaturated compounds are discussed, with a special emphasis on the kinetics and the practicality of the developed systems. The nature of enantioselectivity and the hydrogenation mechanisms are reviewed as well. Catalyst immobilization and the different immobilization techniques are examined.
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Affiliation(s)
| | | | - Johannes G. Khinast
- Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ 08854-8058, USA. Tel.: (+1) 732-445-2970, Fax: (+1) 732-445-2581
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15
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Westmoreland I, Munslow IJ, Clarke AJ, Clarkson G, Scott P. Chiral Complexes of a New Diazaallyl Ligand: Group 4 Aminooxazolinates. Organometallics 2004. [DOI: 10.1021/om049518s] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ian Westmoreland
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
| | - Ian J. Munslow
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
| | - Adam J. Clarke
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
| | - Guy Clarkson
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
| | - Peter Scott
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
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17
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Paley RS. Enantiomerically pure planar chiral organometallic complexes via facially selective pi-complexation. Chem Rev 2002; 102:1493-524. [PMID: 11996542 DOI: 10.1021/cr010121x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert S Paley
- Department of Chemistry, Swarthmore College, 500 College Avenue, Swarthmore, PA 19081, USA
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18
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Rupert KC, Liu CC, Nguyen TT, Whitener MA, Sowa JR. Synthesis of Verbenindenes: A New Class of Chiral Indenyl Ligands Derived from Verbenone. Organometallics 2001. [DOI: 10.1021/om010731n] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenneth C. Rupert
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, New Jersey 07079, The R. W. Johnson Pharmaceutical Research Institute, Raritan, New Jersey 08869, and Department of Chemistry and Biochemistry, Montclair State University, Upper Montclair, New Jersey 07043
| | - Charles Chao Liu
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, New Jersey 07079, The R. W. Johnson Pharmaceutical Research Institute, Raritan, New Jersey 08869, and Department of Chemistry and Biochemistry, Montclair State University, Upper Montclair, New Jersey 07043
| | - Tam T. Nguyen
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, New Jersey 07079, The R. W. Johnson Pharmaceutical Research Institute, Raritan, New Jersey 08869, and Department of Chemistry and Biochemistry, Montclair State University, Upper Montclair, New Jersey 07043
| | - Mark A. Whitener
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, New Jersey 07079, The R. W. Johnson Pharmaceutical Research Institute, Raritan, New Jersey 08869, and Department of Chemistry and Biochemistry, Montclair State University, Upper Montclair, New Jersey 07043
| | - John R. Sowa
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, New Jersey 07079, The R. W. Johnson Pharmaceutical Research Institute, Raritan, New Jersey 08869, and Department of Chemistry and Biochemistry, Montclair State University, Upper Montclair, New Jersey 07043
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19
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Brookings DC, Harrison SA, Whitby RJ, Crombie B, Jones RVH. Induction of Planar Chirality in Formation of (η5:η1-1-(1-Cyclohexyl-2-(diphenylphosphino)ethyl)indenyl)carbonylrhodium and (η5:η1-1-(2-Phenyl-2- (diphenylphosphino)ethyl)indenyl)carbonylrhodium. Organometallics 2001. [DOI: 10.1021/om010367s] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Batsanov AS, Bridgewater BM, Howard JA, Hughes AK, Wilson C. Sterically demanding cyclopentadienyl chemistry: synthesis of iron and zirconium complexes of 1-phenyl-3-methyl-4,5,6,7-tetrahydroindenyl. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(99)00446-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Herberich GE, Ganter B, Pons M. Borabenzene Derivatives. 27. From (−)-α-Pinene to the First Chiral Boratabenzene Salt1. Organometallics 1998. [DOI: 10.1021/om971069r] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gerhard E. Herberich
- Institut für Anorganische Chemie, Technische Hochschule Aachen, D-52056 Aachen, Germany
| | - Beate Ganter
- Institut für Anorganische Chemie, Technische Hochschule Aachen, D-52056 Aachen, Germany
| | - Mario Pons
- Institut für Anorganische Chemie, Technische Hochschule Aachen, D-52056 Aachen, Germany
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23
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Halterman RL, Tretyakov A, Combs D, Chang J, Khan MA. Synthesis and Structure of C2-Symmetric, Doubly Bridged Bis(indenyl)titanium and -zirconium Dichlorides. Organometallics 1997. [DOI: 10.1021/om9703548] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ronald L. Halterman
- Department of Chemistry and Biochemistry, The University of Oklahoma, 620 Parrington Oval, Norman, Oklahoma 73019-0370
| | - Alexander Tretyakov
- Department of Chemistry and Biochemistry, The University of Oklahoma, 620 Parrington Oval, Norman, Oklahoma 73019-0370
| | - David Combs
- Department of Chemistry and Biochemistry, The University of Oklahoma, 620 Parrington Oval, Norman, Oklahoma 73019-0370
| | - Jiang Chang
- Department of Chemistry and Biochemistry, The University of Oklahoma, 620 Parrington Oval, Norman, Oklahoma 73019-0370
| | - Masood A. Khan
- Department of Chemistry and Biochemistry, The University of Oklahoma, 620 Parrington Oval, Norman, Oklahoma 73019-0370
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25
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Preparation and application of chiral cyclopentadienes. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s1874-5148(97)80003-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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26
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Li Z, Vasella A. Synthesis of Enantiomerically Pure Carbohydrate-Derived Annulated Cyclopentadienes and Ferrocenes. Helv Chim Acta 1996. [DOI: 10.1002/hlca.19960790815] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Paquette LA, Bzowej EI, Kreuzholz R. Optically Pure C2-Symmetric Transition Metal Complexes. Steric Consequences of Flanking the Cyclopentadienyl Anion with a Pair of Bridged Bicyclic Terpene-Derived Hydrocarbon Subunits. Organometallics 1996. [DOI: 10.1021/om960391j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leo A. Paquette
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
| | - Eugene I. Bzowej
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
| | - Rüdiger Kreuzholz
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
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Liu C, Sowa JR. Synthesis of (1R)-(+)-nopinone- and (1S)-(−)-verbenone-derived chiral annulated indenes via electrocyclic reactions. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)01629-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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