51
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Biosca M, Magre M, Coll M, Pàmies O, Diéguez M. Alternatives to Phosphinooxazoline (t-
BuPHOX) Ligands in the Metal-Catalyzed Hydrogenation of Minimally Functionalized Olefins and Cyclic β-Enamides. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700573] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Maria Biosca
- Departament de Química Física i Inorgànica; Universitat Rovira i Virgili; Campus Sescelades, C/ Marcel⋅lí Domingo, 1. 43007 Tarragona Spain
| | - Marc Magre
- Departament de Química Física i Inorgànica; Universitat Rovira i Virgili; Campus Sescelades, C/ Marcel⋅lí Domingo, 1. 43007 Tarragona Spain
| | - Mercè Coll
- Departament de Química Física i Inorgànica; Universitat Rovira i Virgili; Campus Sescelades, C/ Marcel⋅lí Domingo, 1. 43007 Tarragona Spain
| | - Oscar Pàmies
- Departament de Química Física i Inorgànica; Universitat Rovira i Virgili; Campus Sescelades, C/ Marcel⋅lí Domingo, 1. 43007 Tarragona Spain
| | - Montserrat Diéguez
- Departament de Química Física i Inorgànica; Universitat Rovira i Virgili; Campus Sescelades, C/ Marcel⋅lí Domingo, 1. 43007 Tarragona Spain
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Abstract
Abstract
Asymmetric catalysis has become an indispensable and productive field within the Chinese organic chemistry society. The design of chiral ligands is one of the most prominent research areas in this field. Since the late 1990s, Chinese organic chemists have developed numerous chiral ligands possessing novel chiral skeletons and design concepts. Some of these ligands have been widely adopted and can be regarded as ‘privileged ligand’, which have shown excellent performance in many asymmetric catalytic reactions. In this review, we provide an overview of the chiral ligands designed by Chinese scientists with the aim of promoting the development of this area in China and with the hope of encouraging more scientists across the world to use these ligands when designing asymmetric reactions.
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53
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Zhu SF, Zhou QL. Iridium-Catalyzed Asymmetric Hydrogenation of Unsaturated Carboxylic Acids. Acc Chem Res 2017; 50:988-1001. [PMID: 28374998 DOI: 10.1021/acs.accounts.7b00007] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Chiral carboxylic acid moieties are widely found in pharmaceuticals, agrochemicals, flavors, fragrances, and health supplements. Although they can be synthesized straightforwardly by transition-metal-catalyzed enantioselective hydrogenation of unsaturated carboxylic acids, because the existing chiral catalysts have various disadvantages, the development of new chiral catalysts with high activity and enantioselectivity is an important, long-standing challenge. Ruthenium complexes with chiral diphosphine ligands and rhodium complexes with chiral monodentate or bidentate phosphorus ligands have been the predominant catalysts for asymmetric hydrogenation of unsaturated acids. However, the efficiency of these catalysts is highly substrate-dependent, and most of the reported catalysts require a high loading, high hydrogen pressure, or long reaction time for satisfactory results. Our recent studies have revealed that chiral iridium complexes with chiral spiro-phosphine-oxazoline ligands and chiral spiro-phosphine-benzylamine ligands exhibit excellent activity and enantioselectivity in the hydrogenation of α,β-unsaturated carboxylic acids, including α,β-disubstituted acrylic acids, trisubstituted acrylic acids, α-substituted acrylic acids, and heterocyclic α,β-unsaturated acids. On the basis of an understanding of the role of the carboxy group in iridium-catalyzed asymmetric hydrogenation reactions, we developed a carboxy-group-directed strategy for asymmetric hydrogenation of olefins. Using this strategy, we hydrogenated several challenging olefin substrates, such as β,γ-unsaturated carboxylic acids, 1,1-diarylethenes, 1,1-dialkylethenes, and 1-alkyl styrenes in high yield and with excellent enantioselectivity. All these iridium-catalyzed asymmetric hydrogenation reactions feature high turnover numbers (up to 10000) and turnover frequencies (up to 6000 h-1), excellent enantioselectivities (greater than 95% ee with few exceptions), low hydrogen pressure (<12 atm), and operational simplicity. These features make chiral iridium catalysts superior or comparable to well-established chiral ruthenium and rhodium catalysts for asymmetric hydrogenation of unsaturated carboxylic acids. A number of chiral natural products and pharmaceuticals have been prepared by concise routes involving an iridium-catalyzed asymmetric hydrogenation of an unsaturated carboxylic acid as a key step. As part of a mechanistic study of iridium-catalyzed asymmetric hydrogenation of unsaturated acids, we isolated, for the first time, the migratory insertion intermediate in the iridium-catalyzed asymmetric hydrogenation of olefins, and this result strongly supports the involvement of an Ir(III)/Ir(V) catalytic cycle. The rigid, bulky scaffold of the chiral spiro-P,N-ligands of the catalysts not only prevents them from undergoing deactivating aggregation under the hydrogenation conditions but also is responsible for the efficient chiral induction. The carboxy group of the substrate acts as an anchor to ensure coordination of the substrate to the iridium center of the catalyst during the reaction and makes the hydrogenation proceed smoothly.
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Affiliation(s)
- Shou-Fei Zhu
- State
Key Laboratory and Institute of Elemento-Organic Chemistry and ‡Collaborative
Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qi-Lin Zhou
- State
Key Laboratory and Institute of Elemento-Organic Chemistry and ‡Collaborative
Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, China
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54
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Yang S, Che W, Wu HL, Zhu SF, Zhou QL. Neutral iridium catalysts with chiral phosphine-carboxy ligands for asymmetric hydrogenation of unsaturated carboxylic acids. Chem Sci 2017; 8:1977-1980. [PMID: 28451313 PMCID: PMC5384563 DOI: 10.1039/c6sc03764j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 11/14/2016] [Indexed: 01/14/2023] Open
Abstract
We developed neutral iridium catalysts with chiral spiro phosphine-carboxy ligands (SpiroCAP) for asymmetric hydrogenation of unsaturated carboxylic acids. Different from the cationic Crabtree-type catalysts, the iridium catalysts with chiral spiro phosphine-carboxy ligands are neutral and do not require the use of a tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (BArF-) counterion, which is necessary for stabilizing cationic Crabtree-type catalysts. Another advantage of the neutral iridium catalysts is that they have high stability and have a long lifetime in air. The new iridium catalysts with chiral spiro phosphine-carboxy ligands exhibit unprecedented high enantioselectivity (up to 99.4% ee) in the asymmetric hydrogenations of various unsaturated carboxylic acids, particularly for 3-alkyl-3-methylenepropionic acids, which are challenging substrates for other chiral catalysts.
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Affiliation(s)
- Shuang Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China . ;
| | - Wen Che
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China . ;
| | - Hui-Ling Wu
- State Key Laboratory and Institute of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China . ;
| | - Shou-Fei Zhu
- 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 . ; .,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071 , China
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55
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Delong W, Lanying W, Yongling W, Shuang S, Juntao F, Xing Z. Natural α-methylenelactam analogues: Design, synthesis and evaluation of α-alkenyl-γ and δ-lactams as potential antifungal agents against Colletotrichum orbiculare. Eur J Med Chem 2017; 130:286-307. [PMID: 28254700 DOI: 10.1016/j.ejmech.2017.02.050] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 02/18/2017] [Accepted: 02/20/2017] [Indexed: 12/27/2022]
Abstract
In our continued efforts to improve the potential utility of the α-methylene-γ-lactone scaffold, 62 new and 59 known natural α-methylenelactam analogues including α-methylene-γ-lactams, α-arylidene-γ and δ-lactams, and 3-arylideneindolin-2-ones were synthesized as the bioisosteric analogues of the α-methylenelactone scaffold. The results of antifungal and cytotoxic activity indicated that among these derivatives compound (E)-1-(2, 6-dichlorobenzyl)-3-(2-fluorobenzylidene) pyrrolidin-2-one (Py51) possessed good selectivity with the highest antifungal activity against Colletotrichum orbiculare with IC50 = 10.4 μM but less cytotoxic activity with IC50 = 141.2 μM (against HepG2 cell line) and 161.2 μM (against human hepatic L02 cell line). Ultrastructural change studies performed by transmission electron microscope showed that Py51 could cause important cell morphological changes in C. orbiculare, such as plasma membrane detached from cell wall, cell wall thickening, mitochondria disruption, a dramatic increase in vacuolation, and eventually a complete loss in the integrity of organelles. Significantly, mitochondria appeared one of the primary targets, as confirmed by their remarkably aberrant morphological changes. Analysis of structure-activity relationships revealed that incorporation of the aryl group into the α-exo-methylene and the N-benzyl substitution increased the activity. Meanwhile, the α-arylidene-γ-lactams have superiority in selectivity over the 3-arylideneindolin-2-ones. Based on the results, the N-benzyl substituted α-(2-fluorophenyl)-γ-lactam was identified as the most promising natural-based scaffold for further discovering and developing improved crop-protection agents.
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Affiliation(s)
- Wang Delong
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Wang Lanying
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China; College of Environment and Plant Protection, Hainan University, Haikou, Hainan, 570228, China
| | - Wu Yongling
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Song Shuang
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
| | - Feng Juntao
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China.
| | - Zhang Xing
- Research & Development Center of Biorational Pesticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling 712100, China
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56
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Iridium-Catalyzed Asymmetric Hydrogenation of β,γ-Unsaturated γ-Lactams: Scope and Mechanistic Studies. Org Lett 2017; 19:1144-1147. [DOI: 10.1021/acs.orglett.7b00171] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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57
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Wang X, Wang X, Han Z, Wang Z, Ding K. Palladium-catalyzed asymmetric allylic amination: enantioselective synthesis of chiral α-methylene substituted β-aminophosphonates. Org Chem Front 2017. [DOI: 10.1039/c6qo00597g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium catalyzed asymmetric allylic amination of 2-diethylphosphonate-substituted allylic acetates in the presence of SKP ligands afforded the corresponding chiral β-aminophosphonates in good yields, high regioselectivities, and excellent enantioselectivities.
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Affiliation(s)
- Xubin Wang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Zhaobin Han
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Zheng Wang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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58
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Li X, You C, Yang Y, Wang F, Li S, Lv H, Zhang X. Rhodium-catalyzed enantioselective hydrogenation of α-amino acrylonitriles: an efficient approach to synthesizing chiral α-amino nitriles. Chem Commun (Camb) 2017; 53:1313-1316. [DOI: 10.1039/c6cc09662j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient asymmetric hydrogenation of α-amino acrylonitriles has been achieved, affording chiral α-amino nitriles in excellent yields and enantioselectivities regardless of the cis–trans configuration of α-amino acrylonitriles.
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Affiliation(s)
- Xiuxiu Li
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Cai You
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Yusheng Yang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Fangyuan Wang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Shuailong Li
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Hui Lv
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
| | - Xumu Zhang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P. R. China
- Department of Chemistry
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59
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Meng K, Xia J, Wang Y, Zhang X, Yang G, Zhang W. Ir/BiphPHOX-catalyzed asymmetric hydrogenation of 3-substituted 2,5-dihydropyrroles and 2,5-dihydrothiophene 1,1-dioxides. Org Chem Front 2017. [DOI: 10.1039/c7qo00248c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An efficient asymmetric hydrogenation of 3-substituted 2,5-dihydropyrroles and 2,5-dihydrothiophene 1,1-dioxides was developed using an Ir catalyst with an axially flexible chiral phosphine-oxazoline ligand.
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Affiliation(s)
- Ke Meng
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Jingzhao Xia
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Yanzhao Wang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Xinghua Zhang
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- China
| | - Guoqiang Yang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Wanbin Zhang
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- China
- School of Chemistry and Chemical Engineering
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60
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Ma BD, Du SH, Wang Y, Ou XM, Huang MZ, Wang LX, Wang XG. Synthesis of chiral hydantoin derivatives by homogeneous Pd-catalyzed asymmetric hydrogenation. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2016.10.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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61
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Zhang Z, Butt NA, Zhang W. Asymmetric Hydrogenation of Nonaromatic Cyclic Substrates. Chem Rev 2016; 116:14769-14827. [DOI: 10.1021/acs.chemrev.6b00564] [Citation(s) in RCA: 224] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Zhenfeng Zhang
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Nicholas A. Butt
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanbin Zhang
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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62
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Chiral ferrocene-based P,S ligands for Ir-catalyzed hydrogenation of minimally functionalized olefins. Scope and limitations. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.01.047] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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63
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Li J, Shen J, Xia C, Wang Y, Liu D, Zhang W. Asymmetric Hydrogenation of α-Substituted Acrylic Acids Catalyzed by a Ruthenocenyl Phosphino-oxazoline–Ruthenium Complex. Org Lett 2016; 18:2122-5. [DOI: 10.1021/acs.orglett.6b00748] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jing Li
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Jiefeng Shen
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Chao Xia
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yanzhao Wang
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Delong Liu
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanbin Zhang
- School of Pharmacy and ‡School of Chemistry and Chemical
Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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64
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Gao W, Wang Q, Xie Y, Lv H, Zhang X. Rhodium-catalyzed Asymmetric Hydrogenation of α-Dehydroamino Ketones: A General Approach to Chiral α-amino Ketones. Chem Asian J 2015; 11:231-3. [DOI: 10.1002/asia.201500892] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Wenchao Gao
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences; Wuhan University; Wuhan, Hubei 430072 China
| | - Qingli Wang
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences; Wuhan University; Wuhan, Hubei 430072 China
| | - Yun Xie
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences; Wuhan University; Wuhan, Hubei 430072 China
| | - Hui Lv
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences; Wuhan University; Wuhan, Hubei 430072 China
| | - Xumu Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences; Wuhan University; Wuhan, Hubei 430072 China
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65
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Takenaka K, Lin X, Takizawa S, Sasai H. Structural Features and Asymmetric Environment of i-Pr-SPRIX Ligand. Chirality 2015; 27:532-7. [PMID: 26096770 DOI: 10.1002/chir.22467] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 04/14/2015] [Accepted: 04/15/2015] [Indexed: 11/06/2022]
Abstract
Novel chiral diisopropyl spiro bis(isoxazoline) ligands, anti-i-Pr-SPRIX and syn-i-Pr-SPRIX, were designed and synthesized. Their catalytic utility, X-ray crystallographic analyses, and complexation studies demonstrated the structural features of tetraisopropyl spiro bis(isoxazoline) ligand, i-Pr-SPRIX, which is a prominent ligand in various enantioselective Pd catalytic processes: All i-Pr groups work in collaboration to create an effective asymmetric environment.
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Affiliation(s)
- Kazuhiro Takenaka
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, Japan
| | - Xianjin Lin
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, Japan
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66
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ADUC Prizes: Tanja Gaich, Viktoria H. Däschlein-Geßner, and Michael Sommer / Carl Duisberg Memorial Prize: K. Ray / Horst Pracejus Prize: F. D. Toste / Leibniz Prize: H. Dietz, S. Grimme, and C. Hertweck / President of the Royal Swedish Academy of Science. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201500439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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67
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ADUC-Preise: Tanja Gaich, Viktoria H. Däschlein-Geßner und Michael Sommer / Carl-Duisberg-Gedächtnispreis: K. Ray / Horst-Pracejus-Preis: F. D. Toste / Leibniz-Preis: H. Dietz, S. Grimme und C. Hertweck / Präsidentin der Königlich-Schwedischen Akademie de. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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68
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Zhang P, Liu J, Wang Z, Ding K. Highly enantio- and diastereoselective reductive aldol reactions catalyzed by chiral spiro bisphosphine oxides. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60241-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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69
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Hu Q, Zhang Z, Liu Y, Imamoto T, Zhang W. ZnCl2-Promoted Asymmetric Hydrogenation of β-Secondary-Amino Ketones Catalyzed by a P-Chiral Rh-Bisphosphine Complex. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201411384] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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70
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Hu Q, Zhang Z, Liu Y, Imamoto T, Zhang W. ZnCl2-Promoted Asymmetric Hydrogenation of β-Secondary-Amino Ketones Catalyzed by a P-Chiral Rh-Bisphosphine Complex. Angew Chem Int Ed Engl 2014; 54:2260-4. [DOI: 10.1002/anie.201411384] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Indexed: 11/07/2022]
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71
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Jiang YY, Yu HZ, Fu Y. Theoretical Study on Homogeneous Hydrogen Activation Catalyzed by Cationic Ag(I) Complex. Organometallics 2014. [DOI: 10.1021/om500921d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yuan-Ye Jiang
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Hai-Zhu Yu
- Department
of Polymer Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yao Fu
- Department
of Chemistry, University of Science and Technology of China, Hefei 230026, China
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72
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Wolińska E. Asymmetric Henry reactions catalyzed by copper(II) complexes of chiral 1,2,4-triazine-oxazoline ligands: the impact of substitution in the oxazoline ring on ligand activity. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.06.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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73
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Synthesis of chiral 1,3-bis(1-(diarylphosphoryl)ethyl)-benzenes via Ir-catalyzed double asymmetric hydrogenation of bis(diarylvinylphosphine oxides). Sci China Chem 2014. [DOI: 10.1007/s11426-014-5134-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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74
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Bernasconi M, Müller MA, Pfaltz A. Asymmetric Hydrogenation of Maleic Acid Diesters and Anhydrides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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75
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Bernasconi M, Müller MA, Pfaltz A. Asymmetric Hydrogenation of Maleic Acid Diesters and Anhydrides. Angew Chem Int Ed Engl 2014; 53:5385-8. [DOI: 10.1002/anie.201402034] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Indexed: 11/10/2022]
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