1
|
Affiliation(s)
- Nilanjana Majumdar
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, Uttar Pradesh, India
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| |
Collapse
|
2
|
Ruiz J, Oger P, Soulère L, Popowycz F. Straightforward Synthesis of Chiral Terpenoid Building Blocks by Ru-Catalyzed Enantioselective Hydrogenation. J Org Chem 2021; 86:9396-9406. [PMID: 34180667 DOI: 10.1021/acs.joc.1c00677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Starting from commercially available (R)- and (S)-β-citronellol, two strategies were designed to synthesize all four stereoisomers of 2,6-dimethyloctane monoterpene chirons in four or five steps in 32-47% overall yield. The desired fragments were obtained by a key Ru-catalyzed asymmetric olefin hydrogenation step under moderate temperature (50 °C), pressure (4 bar), and low catalyst loadings (0.5 mol %) under optimized conditions. Screening of commercially available catalysts highlighted the key role of DM-SEGPHOS as an economically advantageous alternative to commonly used H8-BINAP for equal performances. These results open new possibilities for versatile and scalable syntheses of these useful building blocks.
Collapse
Affiliation(s)
- Johal Ruiz
- Université de Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS, 1 rue Victor Grignard, 69621 Villeurbanne Cedex, France
| | - Philippe Oger
- Université de Lyon, INSA Lyon, CNRS, UMR 5240, 69621 Villeurbanne, France
| | - Laurent Soulère
- Université de Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS, 1 rue Victor Grignard, 69621 Villeurbanne Cedex, France
| | - Florence Popowycz
- Université de Lyon, INSA Lyon, Université Lyon 1, CNRS, CPE Lyon, UMR 5246, ICBMS, 1 rue Victor Grignard, 69621 Villeurbanne Cedex, France
| |
Collapse
|
3
|
Genêt J, Phansavath P, Ratovelomanana‐Vidal V. Asymmetric Hydrogenation: Design of Chiral Ligands and Transition Metal Complexes. Synthetic and Industrial Applications. Isr J Chem 2021. [DOI: 10.1002/ijch.202100023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jean‐Pierre Genêt
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life & Health Sciences CSB2D Team 75005 Paris France
| | - Phannarath Phansavath
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life & Health Sciences CSB2D Team 75005 Paris France
| | - Virginie Ratovelomanana‐Vidal
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life & Health Sciences CSB2D Team 75005 Paris France
| |
Collapse
|
4
|
Szwaczko K, Miroslaw B, Demchuk OM, Wójciuk G, Mazur L, Pietrusiewicz KM. Metathetic approach to new NORPHOS-related bisphosphanes: facile synthesis and application in asymmetric hydrogenation. PURE APPL CHEM 2021. [DOI: 10.1515/pac-2020-1205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A highly efficient synthesis of new chiral bisphosphanes derived from the renowned NORPHOS ligand is presented. The synthesis involves ring-opening metathesis of NORPHOS dioxide with an external olefin, followed by saturation of the new double bonds and adjustment of the oxidation level of phosphorus centers oxidation level. The synthesized bisphosphanes retain the configuration and enantiomeric purity of the starting NORPHOS. Their utility as ligands in asymmetric catalysis is exemplified using an open-NORPHOS ligand in some benchmark Rh-catalyzed hydrogenations of enamides where excellent chemical yields and enantiomeric purities of the products have been secured. The proposed protocol demonstrated the possibility of a straightforward synthesis of new chiral catalysts to be utilized in the asymmetric synthesis of pharmaceutically important compounds, such as amino acid derivatives.
Collapse
Affiliation(s)
- Katarzyna Szwaczko
- Faculty of Chemistry , Maria Curie-Sklodowska University in Lublin , Pl. Marii Curie-Sklodowskiej 3, 20-031 Lublin , Poland
| | - Barbara Miroslaw
- Faculty of Chemistry , Maria Curie-Sklodowska University in Lublin , Pl. Marii Curie-Sklodowskiej 3, 20-031 Lublin , Poland
| | - Oleg M. Demchuk
- Faculty of Science and Health , The John Paul II Catholic University of Lublin , 1h-Konstantynów St., 20-708 Lublin , Poland
- SBŁ-Pharmaceutical Research Institute , 8-Rydygiera St., 01-793 Warsaw , Poland
| | - Grzegorz Wójciuk
- Faculty of Chemistry , Maria Curie-Sklodowska University in Lublin , Pl. Marii Curie-Sklodowskiej 3, 20-031 Lublin , Poland
| | - Liliana Mazur
- Faculty of Chemistry , Maria Curie-Sklodowska University in Lublin , Pl. Marii Curie-Sklodowskiej 3, 20-031 Lublin , Poland
| | - Kazimierz Michał Pietrusiewicz
- Faculty of Chemistry , Maria Curie-Sklodowska University in Lublin , Pl. Marii Curie-Sklodowskiej 3, 20-031 Lublin , Poland
| |
Collapse
|
5
|
Abstract
Amines are a class of compounds of essential importance in organic synthesis, pharmaceuticals and agrochemicals. Due to the importance of chirality in many practical applications of amines, enantioselective syntheses of amines are of high current interest. Here, we wish to report the development of (R,Ra)-N-Nap-Pyrinap and (R,Sa)-N-Nap-Pyrinap ligands working with CuBr to catalyze the enantioselective A3-coupling of terminal alkynes, aldehydes, and amines affording optically active propargylic amines, which are platform molecules for the effective derivatization to different chiral amines. With a catalyst loading as low as 0.1 mol% even in gram scale reactions, this protocol is applied to the late stage modification of some drug molecules with highly sensitive functionalities and the asymmetric synthesis of the tubulin polymerization inhibitor (S)-(-)-N-acetylcolchinol in four steps. Mechanistic studies reveal that, unlike reported catalysts, a monomeric copper(I) complex bearing a single chiral ligand is involved in the enantioselectivity-determining step.
Collapse
|
6
|
Zhong H, Shevlin M, Chirik PJ. Cobalt-Catalyzed Asymmetric Hydrogenation of α,β-Unsaturated Carboxylic Acids by Homolytic H2 Cleavage. J Am Chem Soc 2020; 142:5272-5281. [DOI: 10.1021/jacs.9b13876] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hongyu Zhong
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Michael Shevlin
- Department of Process Research & Development, Merck & Company, Limited, Rahway, New Jersey 07065, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| |
Collapse
|
7
|
Li C, Lu W, Lu B, Li W, Xie X, Zhang Z. Ru-Catalyzed Chemo- and Enantioselective Hydrogenation of 2,4-Pentadien-1-ones: Synthesis of Chiral 2,4-Pentadien-1-ols. J Org Chem 2019; 84:16086-16094. [PMID: 31736310 DOI: 10.1021/acs.joc.9b02576] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The asymmetric hydrogenation of 2,4-pentadien-1-ones has been achieved by using trans-RuCl2[(R)-XylylSunPhos][(R)-Daipen] as a catalyst under basic conditions. This hydrogenation demonstrated exclusive C1-carbonyl selectivity, and thus the conjugated 2,4-diene motifs remained untouched, which provides a synthetically useful method for various chiral 2,4-pentadien-1-ols.
Collapse
Affiliation(s)
- Chengyang Li
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Wenkui Lu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Bin Lu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Wanfang Li
- College of Science , University of Shanghai for Science and Technology , Shanghai 200093 , China
| | - Xiaomin Xie
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China
| | - Zhaoguo Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China.,Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| |
Collapse
|
8
|
Reznikov AN, Sibiryakova AE, Baimuratov MR, Golovin EV, Rybakov VB, Klimochkin YN. Synthesis of non-racemic 4-nitro-2-sulfonylbutan-1-ones via Ni(II)-catalyzed asymmetric Michael reaction of β-ketosulfones. Beilstein J Org Chem 2019; 15:1289-1297. [PMID: 31293677 PMCID: PMC6604683 DOI: 10.3762/bjoc.15.127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/22/2019] [Indexed: 12/21/2022] Open
Abstract
Functionally substituted sulfones with stereogenic centers are valuable reagents in organic synthesis and key motifs in some bioactive compounds. The asymmetric Michael addition of β-ketosulfones to conjugated nitroalkenes in the presence of Ni(II) complexes with various chiral vicinal diamines was studied. This reaction provides convenient access to non-racemic 4-nitro-2-sulfonylbutan-1-ones with two stereocenters with high yield and excellent enantioselectivity (up to 99%). It has been established that the catalytic Michael reaction itself was carried out with high diastereoselectivity, but the Michael adducts may epimerize at the C-2 position at a significant rate. Conditions for the preparation of individual diastereomers were found.
Collapse
Affiliation(s)
- Alexander N Reznikov
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| | - Anastasiya E Sibiryakova
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| | - Marat R Baimuratov
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| | - Eugene V Golovin
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| | - Victor B Rybakov
- Department of Chemistry, Moscow State University, Leninskie Gory, 1, 119991, Mosсow, Russian Federation
| | - Yuri N Klimochkin
- Department of Organic Chemistry, Samara State Technical University, Molodogvardeyskaya str., 244, 443100 Samara, Russian Federation
| |
Collapse
|
9
|
Direct Carboxylation of C(sp3)-H and C(sp2)-H Bonds with CO2 by Transition-Metal-Catalyzed and Base-Mediated Reactions. Catalysts 2017. [DOI: 10.3390/catal7120380] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
10
|
Perez M, Echeverria PG, Martinez-Arripe E, Ez Zoubir M, Touati R, Zhang Z, Genet JP, Phansavath P, Ayad T, Ratovelomanana-Vidal V. An Efficient Stereoselective Total Synthesis of All Stereoisomers of the Antibiotic Thiamphenicol through Ruthenium-Catalyzed Asymmetric Reduction by Dynamic Kinetic Resolution. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500661] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
11
|
Affiliation(s)
- Matthias Böge
- Institute of Inorganic and Applied Chemistry, Department of Chemistry, Hamburg University, Martin‐Luther‐King‐Platz6, 20146 Hamburg, Germany, http://www.chemie.uni‐hamburg.de/ac/heck/profheck.html
| | - Jürgen Heck
- Institute of Inorganic and Applied Chemistry, Department of Chemistry, Hamburg University, Martin‐Luther‐King‐Platz6, 20146 Hamburg, Germany, http://www.chemie.uni‐hamburg.de/ac/heck/profheck.html
| |
Collapse
|
12
|
Peters BK, Zhou T, Rujirawanich J, Cadu A, Singh T, Rabten W, Kerdphon S, Andersson PG. An Enantioselective Approach to the Preparation of Chiral Sulfones by Ir-Catalyzed Asymmetric Hydrogenation. J Am Chem Soc 2014; 136:16557-62. [DOI: 10.1021/ja5079877] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Byron K. Peters
- Department
of Organic Chemistry, Stockholm University, S-10691 Stockholm, Sweden
| | - Taigang Zhou
- Department
of Organic Chemistry, Stockholm University, S-10691 Stockholm, Sweden
| | - Janjira Rujirawanich
- Department
of Chemistry-BMC, Uppsala University, Box 576, S-75123 Uppsala, Sweden
| | - Alban Cadu
- Department
of Chemistry-BMC, Uppsala University, Box 576, S-75123 Uppsala, Sweden
| | - Thishana Singh
- Department
of Organic Chemistry, Stockholm University, S-10691 Stockholm, Sweden
- Department
of Chemistry-BMC, Uppsala University, Box 576, S-75123 Uppsala, Sweden
| | - Wangchuk Rabten
- Department
of Organic Chemistry, Stockholm University, S-10691 Stockholm, Sweden
| | - Sutthichat Kerdphon
- Department
of Organic Chemistry, Stockholm University, S-10691 Stockholm, Sweden
| | - Pher G. Andersson
- Department
of Organic Chemistry, Stockholm University, S-10691 Stockholm, Sweden
| |
Collapse
|
13
|
|
14
|
vom Stein T, Weigand T, Merkens C, Klankermayer J, Leitner W. Trimethylenemethane-Ruthenium(II)-Triphos Complexes as Highly Active Catalysts for Catalytic CO Bond Cleavage Reactions of Lignin Model Compounds. ChemCatChem 2012. [DOI: 10.1002/cctc.201200215] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
15
|
Vaquero M, Vargas S, Suárez A, Garcı́a-Garrido SE, Álvarez E, Mancera M, Pizzano A. Synthesis, Characterization, and Reactivity of Ruthenium Bis-Allyl Complexes with Chiral Phosphine-Phosphite Ligands. Organometallics 2012. [DOI: 10.1021/om300018s] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mónica Vaquero
- Instituto de Investigaciones Quı́micas
(IIQ), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avda Américo Vespucio
No. 49, Isla de la Cartuja, 41092 Sevilla, Spain
| | - Sergio Vargas
- Instituto de Investigaciones Quı́micas
(IIQ), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avda Américo Vespucio
No. 49, Isla de la Cartuja, 41092 Sevilla, Spain
| | - Andrés Suárez
- Instituto de Investigaciones Quı́micas
(IIQ), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avda Américo Vespucio
No. 49, Isla de la Cartuja, 41092 Sevilla, Spain
| | - Sergio E. Garcı́a-Garrido
- Departamento
de Quı́mica Orgánica e Inorgánica, Instituto de Quı́mica Organometálica “Enrique
Moles” (Unidad Asociada al CSIC), Universidad de Oviedo, 33006 Oviedo, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Quı́micas
(IIQ), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avda Américo Vespucio
No. 49, Isla de la Cartuja, 41092 Sevilla, Spain
| | - Manuel Mancera
- Departamento de
Quı́mica Orgánica y Farmacéutica, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Antonio Pizzano
- Instituto de Investigaciones Quı́micas
(IIQ), Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Avda Américo Vespucio
No. 49, Isla de la Cartuja, 41092 Sevilla, Spain
| |
Collapse
|
16
|
Matteoli U, Beghetto V, Scrivanti A, Aversa M, Bertoldini M, Bovo S. An alternative stereoselective synthesis of (R)- and (S)-Rosaphen® via asymmetric catalytic hydrogenation. Chirality 2012; 23:779-83. [PMID: 22135807 DOI: 10.1002/chir.20989] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We report an alternative synthesis of the two enantiomers of the floral fragrance Rosaphen®. The key intermediate 2-methyl-5-phenylpentanoic acid 3 is synthesized via asymmetric hydrogenation (ee up to 99%) in the presence of an in situ prepared ruthenium catalyst containing the chiral ferrocenyl phosphine Mandyphos-4.
Collapse
Affiliation(s)
- Ugo Matteoli
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Cà Foscari di Venezia, Dorsoduro 2137, 30123 Venezia, Italy
| | | | | | | | | | | |
Collapse
|
17
|
Fan W, Li W, Ma X, Tao X, Li X, Yao Y, Xie X, Zhang Z. Acid-labile δ-ketal-β-hydroxy esters by asymmetric hydrogenation of corresponding δ-ketal-β-keto esters in the presence of CaCO3. Chem Commun (Camb) 2012; 48:4247-9. [DOI: 10.1039/c2cc31002c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Ma X, Li W, Li X, Tao X, Fan W, Xie X, Ayad T, Ratovelomanana-Vidal V, Zhang Z. Ru-catalyzed highly chemo- and enantioselective hydrogenation of γ-halo-γ,δ-unsaturated-β-keto esters under neutral conditions. Chem Commun (Camb) 2012; 48:5352-4. [DOI: 10.1039/c2cc30925d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Fan W, Li W, Ma X, Tao X, Li X, Yao Y, Xie X, Zhang Z. Ru-Catalyzed Asymmetric Hydrogenation of γ-Heteroatom Substituted β-Keto Esters. J Org Chem 2011; 76:9444-51. [PMID: 21981465 DOI: 10.1021/jo201822k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Weizheng Fan
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanfang Li
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xin Ma
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaoming Tao
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaoming Li
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Ying Yao
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaomin Xie
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Zhaoguo Zhang
- School of Chemistry
and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- Shanghai Institute of Organic Chemistry, 345 Lingling Road, Shanghai 200032,
China
| |
Collapse
|
20
|
Yao Y, Fan W, Li W, Ma X, Zhu L, Xie X, Zhang Z. Synthesis of (S)-7-Amino-5-azaspiro[2.4]heptane via Highly Enantioselective Hydrogenation of Protected Ethyl 1-(2-Aminoaceto)cyclopropanecarboxylates. J Org Chem 2011; 76:2807-13. [DOI: 10.1021/jo2002165] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ying Yao
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Weizheng Fan
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanfang Li
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xin Ma
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Lvfeng Zhu
- School of Chemical Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei, Nanjing 210094, China
| | - Xiaomin Xie
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Zhaoguo Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- Shanghai Institute of Organic Chemistry, 345 Lingling Road, Shanghai 200032, China
| |
Collapse
|
21
|
Karamé I, Bellur E, Rotzoll S, Langer P, Fischer C, Holz J, Börner A. Highly Enantioselective Hydrogenation of β‐Alkyl and β‐(ω‐Chloroalkyl) Substituted β‐Keto Esters. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910701196538] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Iyad Karamé
- a Leibniz‐Institut für Katalyse an der Universität Rostock e.V. , Rostock, Germany
| | - Esen Bellur
- b Institut für Biochemie, Universität Greifswald , Greifswald, Germany
| | - Sven Rotzoll
- a Leibniz‐Institut für Katalyse an der Universität Rostock e.V. , Rostock, Germany
- c Institut für Chemie, Universität Rostock , Rostock, Germany
| | - Peter Langer
- a Leibniz‐Institut für Katalyse an der Universität Rostock e.V. , Rostock, Germany
- c Institut für Chemie, Universität Rostock , Rostock, Germany
| | - Christine Fischer
- a Leibniz‐Institut für Katalyse an der Universität Rostock e.V. , Rostock, Germany
| | - Jens Holz
- a Leibniz‐Institut für Katalyse an der Universität Rostock e.V. , Rostock, Germany
| | - Armin Börner
- a Leibniz‐Institut für Katalyse an der Universität Rostock e.V. , Rostock, Germany
- c Institut für Chemie, Universität Rostock , Rostock, Germany
| |
Collapse
|
22
|
Brown JM, Rose M, Knight FI, Wienand A. Ruthenium diphosphine complexes for catalysis; a general synthesis and direct comparisons with rhodium complexes. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19951140419] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
23
|
Yi-Xin C, Yue-Ming L, Kim-Hung L, Sun-Chi CA. Novel Chiral Aminophosphine Ligand: Synthesis and Application in Asymmetric Catalytic Hydrogenation Reaction. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20030210116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
24
|
Chen YX, Li YM, Lam KH, Chan ASC. Synthesis of Novel Chiral Biphenylamine Ligand 6,6'-Dimethoxy-2,2′-diaminobiphenyl. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20010190815] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
25
|
Zhang J, Blazecka PG, Bruendl MM, Huang Y. Ru-TsDPEN with formic acid/Hunig's base for asymmetric transfer hydrogenation, a practical synthesis of optically enriched N-propyl pantolactam. J Org Chem 2009; 74:1411-4. [PMID: 19105680 DOI: 10.1021/jo802380j] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Noyori-Ikariya catalysts, Ru-TsDPEN 1 or 2, in combination with HCOOH/Hunig's base (5:2) have been successfully utilized for catalytic asymmetric transfer hydrogenation of alpha-ketopantolactam, and optically enriched N-substituted pantolactam was prepared (S/C = 500, up to 95% ee and 99% conversion in HCOOH/Hunig's base condition). More than 2 kg of this key intermediate 9 has been synthesized efficiently with excellent chemical yield and chiral purity.
Collapse
Affiliation(s)
- Ji Zhang
- Research API, Pfizer Global Research & Development, Michigan Laboratories, Pfizer Inc., 2800 Plymouth Road, Ann Arbor, Michigan 48105, USA.
| | | | | | | |
Collapse
|
26
|
Tsutsumi K, Katayama T, Utsumi N, Murata K, Arai N, Kurono N, Ohkuma T. Practical Asymmetric Hydrogenation of 3-Quinuclidinone Catalyzed by the XylSkewphos/PICA−Ruthenium(II) Complex. Org Process Res Dev 2009. [DOI: 10.1021/op9000302] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kunihiko Tsutsumi
- Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan, and Central Research Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Soka, Saitama 340-0003, Japan
| | - Takeaki Katayama
- Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan, and Central Research Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Soka, Saitama 340-0003, Japan
| | - Noriyuki Utsumi
- Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan, and Central Research Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Soka, Saitama 340-0003, Japan
| | - Kunihiko Murata
- Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan, and Central Research Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Soka, Saitama 340-0003, Japan
| | - Noriyoshi Arai
- Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan, and Central Research Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Soka, Saitama 340-0003, Japan
| | - Nobuhito Kurono
- Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan, and Central Research Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Soka, Saitama 340-0003, Japan
| | - Takeshi Ohkuma
- Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan, and Central Research Laboratory, Technology and Development Division, Kanto Chemical Co., Inc., Soka, Saitama 340-0003, Japan
| |
Collapse
|
27
|
Ding K, Han Z, Wang Z. Spiro Skeletons: A Class of Privileged Structure for Chiral Ligand Design. Chem Asian J 2009; 4:32-41. [DOI: 10.1002/asia.200800192] [Citation(s) in RCA: 216] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
28
|
β-Hydroxycarboxylic Acids from Simple Ketones by Carboxylation and Asymmetric Hydrogenation. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800516] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
29
|
Gainsford GJ, Falshaw A, Lensink C, Seth M. Density functional theory calculations of novel Rh(I) diphosphinite catalysts. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
30
|
|
31
|
Dahlenburg L, Kühnlein C. Homogeneous CO hydrogenation and transfer hydrogenation catalyzed by ruthenium(II) complexes containing optically active Ph2PCH(Ph)CH(Me)NH2 and 1,2-C5H8(PPh2)2 ligands. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2008.01.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
32
|
Xie JH, Zhou QL. Chiral diphosphine and monodentate phosphorus ligands on a spiro scaffold for transition-metal-catalyzed asymmetric reactions. Acc Chem Res 2008; 41:581-93. [PMID: 18311931 DOI: 10.1021/ar700137z] [Citation(s) in RCA: 526] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The preparation of chiral compounds in enantiomerically pure form is a challenging goal in modern organic synthesis. The use of chiral metal complex catalysis is a powerful, economically feasible tool for the preparation of optically active organic compounds on both laboratory and industrial scales. In particular, the metals coordinated by one or more chiral phosphorus ligands exhibit amazing enantioselectivity and reactivity. Many chiral phosphorus ligands have been synthesized and used in transition-metal-catalyzed asymmetric reactions in past decades. However, a large number of reactions still lack effective chiral ligands, and the enantioselectivities in many reactions are substrate-dependent. The development of effective chiral phosphorus ligands, especially ligands having novel chiral backbones, is still an important task in the area of asymmetric catalysis. Molecules containing a spirocyclic framework are ubiquitous in nature. The synthesis of molecules with this spiro structure can be traced back to 100 years ago. However, the use of this spirocyclic framework to construct chiral phosphorus ligands is a recent event. This Account outlines the design and synthesis of a new family of chiral spiro phosphorus ligands including spiro diphosphines and spiro monodentate phosphorus ligands with 1,1'-spirobiindane and 9,9'-spirobifluorene backbone and their applications in transition-metal-catalyzed asymmetric hydrogenation and carbon-carbon bond formation reactions. The chiral spiro diphosphine lgands SDP with a 1,1'-spirobiindane backbone and SFDP with a 9,9'-spirobifluorene backbone, and the spiro monophosphorus ligands including phosphoramidites, phosphites, phosphonites, and phospholane with a 1,1'-spirobiindane backbone were synthesized in good yields from enantiomerically pure 1,1'-spirobiindane-7,7'-diol and 9,9'-spirobifluoren-1,1'-diol. The ruthenium complexes of chiral spiro diphosphine ligands proved to be very effective catalysts for asymmetric hydrogenations of ketones, alpha-arylaldehydes and alpha,beta-unsaturated acids. The rhodium complexes of chiral spiro monophosphorus ligands are highly enantioselective for the asymmetric hydrogenations of alpha- and beta-dehydroamino acid derivatives, alpha-arylethenyl acetamides and non- N-acyl enamines. The spiro monophosphorus ligands were demonstrated to be highly efficient for the Rh-catalyzed asymmetric addition of arylboronic acids to aldehydes and N-tosylarylimines, Pd-catalyzed asymmetric allylation of aldehydes with allylic alcohols, Cu-catalyzed asymmetric ring opening reactions with Grignard reagents, and Ni-catalyzed asymmetric hydrovinylation of styrene derivatives with ethylene. The chiral spiro phosphorus ligands show high enantioselectivities for a wide range of transition-metal-catalyzed asymmetric reactions. In most of these transformations, the enantioselectivities of spiro phosphorus ligands are superior to those obtained by using the corresponding phosphorus ligands with other backbones. These results arise from the intriguing chiral inducement of spiro structures of the ligands.
Collapse
Affiliation(s)
- Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| |
Collapse
|
33
|
Yuasa Y, Yuasa Y. Synthesis of optically active S-methylthio-2-methylbutanoate, an excellent smelling compound. J Sulphur Chem 2008. [DOI: 10.1080/17415990701839982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Yoshifumi Yuasa
- a Takasago International Corporation , Kamisu, Ibaraki, Japan
| | - Yoko Yuasa
- b chool of Pharmacy , Tokyo University of Pharmacy and Life Science , Hachioji, Tokyo, Japan
| |
Collapse
|
34
|
Korostylev A, Andrushko V, Andrushko N, Tararov VI, König G, Börner A. Highly Enantioselective Hydrogenation of Ethyl 5,5-Dimethoxy-3-oxopentanoate and its Application for the Synthesis of a Statin Precursor. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701059] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
35
|
Mommers JHM, de Wildeman SMA, Koolen WAF, Duchateau ALL. Enantioselective gas chromatographic analysis of aqueous samples by on-line derivatisation. Application to enzymatic reactions. J Chromatogr A 2008; 1182:215-8. [PMID: 18237737 DOI: 10.1016/j.chroma.2007.12.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Revised: 11/12/2007] [Accepted: 12/06/2007] [Indexed: 11/28/2022]
Abstract
A new gas chromatography (GC) method is presented for analysing both the conversion and the enantiomeric excess (e.e.) of samples from alcohol dehydrogenase reactions. The chiral compounds studied were a series of saturated, straight chain alcohols, ranging from 2-butanol to 2-heptanol. The alcohols were converted to the corresponding trifluoroacetylated derivatives by injecting trifluoroacetic anhydride onto the column shortly after injection of the aqueous samples in split-injection mode (1:100) onto a Chiraldex G-TA capillary GC column. Injecting seven hundred aqueous enzymatic reaction mixtures according to the above-mentioned procedure revealed no noticeable loss of column performance. Using the new GC method, conventional sample work-up procedures such as extraction and off-line derivatisation are eliminated and throughput of samples is significantly enhanced.
Collapse
|
36
|
Jahjah M, Alame M, Pellet-Rostaing S, Lemaire M. Catalytic asymmetric hydrogenation of α-ketoesters and quinoline using electronically enriched BINAP. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.09.022] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
37
|
Kramer R, Brückner R. Kinetische Differenzierung von β-Ketoestern durch Ruthenium(II)-Binap-katalysierte asymmetrische Hydrierung. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
38
|
Kramer R, Brückner R. Discrimination of β-Ketoesters by Ruthenium(II)–Binap-Catalyzed Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2007; 46:6537-41. [PMID: 17654637 DOI: 10.1002/anie.200700021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Rainer Kramer
- Institut für Organische Chemie und Biochemie, Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
| | | |
Collapse
|
39
|
Qiu L, Li YM, Kwong FY, Yu WY, Fan QH, Chan AS. Highly Efficient Asymmetric Hydrogenation of α,β-Unsaturated Carboxylic Acids Catalyzed by Ruthenium(II)-Dipyridylphosphine Complexes. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200600410] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
40
|
|
41
|
Qiu L, Kwong FY, Wu J, Lam WH, Chan S, Yu WY, Li YM, Guo R, Zhou Z, Chan ASC. A New Class of Versatile Chiral-Bridged Atropisomeric Diphosphine Ligands: Remarkably Efficient Ligand Syntheses and Their Applications in Highly Enantioselective Hydrogenation Reactions. J Am Chem Soc 2006; 128:5955-65. [PMID: 16637664 DOI: 10.1021/ja0602694] [Citation(s) in RCA: 219] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of chiral diphosphine ligands denoted as PQ-Phos was prepared by atropdiastereoselective Ullmann coupling and ring-closure reactions. The Ullmann coupling reaction of the biaryl diphosphine dioxides is featured by highly efficient central-to-axial chirality transfer with diastereomeric excess >99%. This substrate-directed diastereomeric biaryl coupling reaction is unprecedented for the preparation of chiral diphosphine dioxides, and our method precludes the tedious resolution procedures usually required for preparing enantiomerically pure diphosphine ligands. The effect of chiral recognition was also revealed in a relevant asymmetric ring-closure reaction. The chiral tether bridging the two aryl units creates a conformationally rigid scaffold essential for enantiofacial differentiation; fine-tuning of the ligand scaffold (e.g., dihedral angles) can be achieved by varying the chain length of the chiral tether. The enantiomerically pure Ru- and Ir-PQ-Phos complexes have been prepared and applied to the catalytic enantioselective hydrogenations of alpha- and beta-ketoesters (C=O bond reduction), 2-(6'-methoxy-2'-naphthyl)propenoic acid, alkyl-substituted beta-dehydroamino acids (C=C bond reduction), and N-heteroaromatic compounds (C=N bond reduction). An excellent level of enantioselection (up to 99.9% ee) has been attained for the catalytic reactions. In addition, the significant ligand dihedral angle effects on the Ir-catalyzed asymmetric hydrogenation of N-heteroaromatic compounds were also revealed.
Collapse
Affiliation(s)
- Liqin Qiu
- Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Theil A, Hitce J, Retailleau P, Marinetti A. A Synthetic Approach to Macrocyclic, Chiral Phosphane Derivatives with Crown-Ether-Like Structures. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500455] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
43
|
Hagemann B, Junge K, Enthaler S, Michalik M, Riermeier T, Monsees A, Beller M. A General Method for the Enantioselective Hydrogenation of β-Keto Esters using Monodentate Binaphthophosphepine Ligands. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200505131] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
44
|
Enantioselective hydrogenation of levulinic acid esters in the presence of the RuII-BINAP-HCl catalytic system. Russ Chem Bull 2005. [DOI: 10.1007/s11172-006-0125-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
45
|
Cui X, Burgess K. Catalytic Homogeneous Asymmetric Hydrogenations of Largely Unfunctionalized Alkenes. Chem Rev 2005; 105:3272-96. [PMID: 16159153 DOI: 10.1021/cr0500131] [Citation(s) in RCA: 410] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiuhua Cui
- Department of Chemistry, Texas A & M University, P.O. Box 30012, College Station, Texas 77842, USA
| | | |
Collapse
|
46
|
Hoen R, Boogers JAF, Bernsmann H, Minnaard AJ, Meetsma A, Tiemersma-Wegman TD, de Vries AHM, de Vries JG, Feringa BL. Achiral Ligands Dramatically Enhance Rate and Enantioselectivity in the Rh/Phosphoramidite-Catalyzed Hydrogenation of α,β-Disubstituted Unsaturated Acids. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500784] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
47
|
Hoen R, Boogers JAF, Bernsmann H, Minnaard AJ, Meetsma A, Tiemersma-Wegman TD, de Vries AHM, de Vries JG, Feringa BL. Achiral Ligands Dramatically Enhance Rate and Enantioselectivity in the Rh/Phosphoramidite-Catalyzed Hydrogenation of α,β-Disubstituted Unsaturated Acids. Angew Chem Int Ed Engl 2005; 44:4209-12. [PMID: 15929156 DOI: 10.1002/anie.200500784] [Citation(s) in RCA: 162] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rob Hoen
- Department of Organic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | | | | | | | | | | | | | | | | |
Collapse
|
48
|
|
49
|
Cheng X, Zhang Q, Xie J, Wang L, Zhou Q. Highly Rigid Diphosphane Ligands with a Large Dihedral Angle Based on a Chiral Spirobifluorene Backbone. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200462072] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xu Cheng
- State Key Laboratory and Institute of Elemento‐organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222‐350‐6177
| | - Qi Zhang
- State Key Laboratory and Institute of Elemento‐organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222‐350‐6177
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento‐organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222‐350‐6177
| | - Li‐Xin Wang
- State Key Laboratory and Institute of Elemento‐organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222‐350‐6177
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento‐organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222‐350‐6177
| |
Collapse
|
50
|
Cheng X, Zhang Q, Xie JH, Wang LX, Zhou QL. Highly Rigid Diphosphane Ligands with a Large Dihedral Angle Based on a Chiral Spirobifluorene Backbone. Angew Chem Int Ed Engl 2005; 44:1118-1121. [PMID: 15666418 DOI: 10.1002/anie.200462072] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xu Cheng
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222-350-6177
| | - Qi Zhang
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222-350-6177
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222-350-6177
| | - Li-Xin Wang
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222-350-6177
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China, Fax: (+86) 222-350-6177
| |
Collapse
|