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Rathi K, Tiwari OS, Rawat V, Jat JL, Yadav DK, Verma VP. Zirconium oxide nano-catalyzed synthesis of pharmacologically important bis(indolyl)methanes: a highly efficient and mild approach. Org Biomol Chem 2024; 22:3287-3298. [PMID: 38573240 DOI: 10.1039/d4ob00324a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
We report herein a highly efficient and mild approach for synthesizing pharmacologically active bis(indolyl)methanes 3a-z, utilizing ZrO2 nanoparticles as a catalyst. The method involves a condensation reaction between indole and diverse aromatic aldehydes in acetonitrile under mild conditions. The ZrO2 nano-catalyst prepared via a co-precipitation method demonstrates exceptional efficacy, leading to favourable yields of the target bis(indolyl)methanes 3a-z. The versatility of this methodology is highlighted through substrate screening, showcasing its applicability to various aromatic aldehydes.
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Affiliation(s)
- Komal Rathi
- Department of Chemistry, Banasthali University, Banasthali Newai-304022, India.
| | - Om Shanker Tiwari
- The Shmunis School of Biomedicine and Cancer Research, Tel Aviv University, Tel Aviv-6997801, Israel.
| | - Varun Rawat
- Faculty of Exact Sciences, Tel Aviv University, Tel Aviv-6997801, Israel.
| | - Jawahar L Jat
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University) Vidya Vihar, Raebareli Road, Lucknow-226025, Uttar Pradesh, India
| | - Dinesh Kumar Yadav
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur, 313001, India
| | - Ved Prakash Verma
- Department of Chemistry, Banasthali University, Banasthali Newai-304022, India.
- Department of Education in Science and Mathematics (DESM), Regional Institute of Education, Bhubaneshwar, India
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2
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Fager DC, Lee K, Hoveyda AH. Catalytic Enantioselective Addition of an Allyl Group to Ketones Containing a Tri-, a Di-, or a Monohalomethyl Moiety. Stereochemical Control Based on Distinctive Electronic and Steric Attributes of C-Cl, C-Br, and C-F Bonds. J Am Chem Soc 2019; 141:16125-16138. [PMID: 31553181 DOI: 10.1021/jacs.9b08443] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We disclose the results of an investigation designed to generate insight regarding the differences in the electronic and steric attributes of C-F, C-Cl, and C-Br bonds. Mechanistic insight has been gleaned by analysis of variations in enantioselectivity, regarding the ability of electrostatic contact between a halomethyl moiety and a catalyst's ammonium group as opposed to factors lowering steric repulsion and/or dipole minimization. In the process, catalytic and enantioselective methods have been developed for transforming a wide range of trihalomethyl (halogen = Cl or Br), dihalomethyl, or monohalomethyl (halogen = F, Cl, or Br) ketones to the corresponding tertiary homoallylic alcohols. By exploiting electrostatic attraction between a halomethyl moiety and the catalyst's ammonium moiety and steric factors, high enantioselectivity was attained in many instances. Reactions can be performed with 0.5-5.0 mol % of an in situ generated boryl-ammonium catalyst, affording products in 42-99% yield and up to >99:1 enantiomeric ratio. Not only are there no existing protocols for accessing the great majority of the resulting products enantioselectively but also in some cases there are hardly any instances of a catalytic enantioselective addition of a carbon-based nucleophile (e.g., one enzyme-catalyzed aldol addition involving trichloromethyl ketones, and none with dichloromethyl, tribromomethyl, or dibromomethyl ketones). The approach is scalable and offers an expeditious route to the enantioselective synthesis of versatile and otherwise difficult to access aldehydes that bear an α-halo-substituted quaternary carbon stereogenic center as well as an assortment of 2,2-disubstituted epoxides that contain an easily modifiable alkene. Tertiary homoallylic alcohols containing a triazole and a halomethyl moiety, structural units relevant to drug development, may also be accessed efficiently with exceptional enantioselectivity.
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Affiliation(s)
- Diana C Fager
- Department of Chemistry, Merkert Chemistry Center , Boston College , Chestnut Hill , Massachusetts 02467 , United States
| | - KyungA Lee
- Department of Chemistry, Merkert Chemistry Center , Boston College , Chestnut Hill , Massachusetts 02467 , United States
| | - Amir H Hoveyda
- Department of Chemistry, Merkert Chemistry Center , Boston College , Chestnut Hill , Massachusetts 02467 , United States.,Supramolecular Science and Engineering Institute , University of Strasbourg, CNRS , 67000 Strasbourg , France
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3
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Harinath A, Bhattcharjee J, Gorantla KR, Mallik BS, Panda TK. Hydroboration, Cyanosilylation, and Sequential Cyanosilylation and Hydroboration of Carbonyl Compounds in the Presence of a TiIV
Amido Complex as an Efficient Catalyst. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800547] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Adimulam Harinath
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
| | - Jayeeta Bhattcharjee
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
| | - Koteswar Rao Gorantla
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
| | - Bhabani S. Mallik
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
| | - Tarun K. Panda
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi - 502 285 Sangareddy Telangana India
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4
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Li J, Liu H, Meng F, Yan L, Shi Y, Zhang Y, Gu Q. Microwave-assisted Synthesis of New 1,2,3-Triazoles Bearing an Isoxazole Ring by the Azide-alkyne Cycloaddition Click Chemistry. Chem Res Chin Univ 2018. [DOI: 10.1007/s40242-018-7298-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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Yi H, Tang Z, Bian C, Chen H, Qi X, Yue X, Lan Y, Lee JF, Lei A. Oxidation-induced C-H amination leads to a new avenue to build C-N bonds. Chem Commun (Camb) 2018; 53:8984-8987. [PMID: 28744532 DOI: 10.1039/c7cc04955b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this work, we develop an oxidation-induced C-H functionalization strategy, which not only leads to a new avenue to build C-N bonds, but also leads to different site-selectivity compared with "classic directing-groups". The high selectivity of our new catalytic system originates from the heterogeneous electron-density distribution of the radical cation species which are induced by single electron transfer between the aromatics and oxidant-Cu(ii) species.
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Affiliation(s)
- Hong Yi
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
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6
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Yi H, Chen H, Bian C, Tang Z, Singh AK, Qi X, Yue X, Lan Y, Lee JF, Lei A. Coordination strategy-induced selective C–H amination of 8-aminoquinolines. Chem Commun (Camb) 2017; 53:6736-6739. [DOI: 10.1039/c7cc02601c] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Using coordination-strategy, we realized a selective C–H amination of 8-aminoquinolins on the C5 position employing azoles as amines sources.
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Affiliation(s)
- Hong Yi
- College of Chemistry and Molecular Sciences
- The Institute for Advanced Studies
- Wuhan University
- Wuhan
- People's Republic of China
| | - Hong Chen
- College of Chemistry and Molecular Sciences
- The Institute for Advanced Studies
- Wuhan University
- Wuhan
- People's Republic of China
| | - Changliang Bian
- College of Chemistry and Molecular Sciences
- The Institute for Advanced Studies
- Wuhan University
- Wuhan
- People's Republic of China
| | - Zilu Tang
- College of Chemistry and Molecular Sciences
- The Institute for Advanced Studies
- Wuhan University
- Wuhan
- People's Republic of China
| | - Atul K. Singh
- College of Chemistry and Molecular Sciences
- The Institute for Advanced Studies
- Wuhan University
- Wuhan
- People's Republic of China
| | - Xiaotian Qi
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- People's Republic of China
| | - Xiaoyu Yue
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- People's Republic of China
| | - Yu Lan
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400030
- People's Republic of China
| | - Jyh-Fu Lee
- National Synchrotron Radiation Research Center
- Hsinchu 30076
- Taiwan
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences
- The Institute for Advanced Studies
- Wuhan University
- Wuhan
- People's Republic of China
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7
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Yang W, Wang Z, Sun J. Enantioselective Oxetane Ring Opening with Chloride: Unusual Use of Wet Molecular Sieves for the Controlled Release of HCl. Angew Chem Int Ed Engl 2016; 55:6954-8. [DOI: 10.1002/anie.201601844] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Wen Yang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
| | - Zhaobin Wang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
| | - Jianwei Sun
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
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8
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Yang W, Wang Z, Sun J. Enantioselective Oxetane Ring Opening with Chloride: Unusual Use of Wet Molecular Sieves for the Controlled Release of HCl. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601844] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Wen Yang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
| | - Zhaobin Wang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
| | - Jianwei Sun
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay, Kowloon Hong Kong SAR China
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9
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Tamura K, Kumagai N, Shibasaki M. An Enantioselective Synthesis of the Key Intermediate for Triazole Antifungal Agents; Application to the Catalytic Asymmetric Synthesis of Efinaconazole (Jublia). J Org Chem 2014; 79:3272-8. [DOI: 10.1021/jo500369y] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keiji Tamura
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
- ACT-C, Japan Science and Technology Agency (JST), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
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10
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Tamura K, Furutachi M, Kumagai N, Shibasaki M. An Enantioselective Synthesis of Voriconazole. J Org Chem 2013; 78:11396-403. [DOI: 10.1021/jo4019528] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keiji Tamura
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Makoto Furutachi
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
- JST, ACT-C, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
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11
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Zhang Y, Wang S, Miao Z, Yao J, Zhang W, Sheng C. Asymmetric Synthesis, Antifungal Activity and Molecular Modeling of Iodiconazole Isomers. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Zhang Y, Xing H, Xie W, Wan X, Lai Y, Ma D. Asymmetric, Regioselective Bromohydroxylation of 2-Aryl-2-propen-1-ols Catalyzed by Quinine-Derived Catalysts. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200782] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Wu W, Jiang H. Palladium-catalyzed oxidation of unsaturated hydrocarbons using molecular oxygen. Acc Chem Res 2012; 45:1736-48. [PMID: 22839752 DOI: 10.1021/ar3000508] [Citation(s) in RCA: 446] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Oxidation reactions are central components of organic chemistry, and modern organic synthesis increasingly requires selective and mild oxidation methods. Although researchers have developed new organic oxidation methods in recent years, the chemistry community faces continuing challenges to use "green" reagents and maximize atom economy. Undoubtedly, with its low cost and lack of environmentally hazardous byproducts, molecular oxygen (O(2)) is an ideal oxidant. However, relatively limited methodologies are available that use O(2) efficiently in selective organic transformations. Recently, the use of metal catalysts coupled with the reduction of O(2) has become an attractive approach for aerobic oxidation. In particular, Pd complexes have shown great potential for the development of versatile aerobic reactions because of their ability to directly couple O(2) reduction. As a result, these complexes have attracted tremendous research attention and afford new opportunities for selective oxidation chemistry. In this Account we highlight some of our progress toward the synthetic goal to functionalize the unsaturated hydrocarbons largely through the appropriate choice of Pd catalysts and O(2). We have focused on developing simple and efficient methods to construct new carbon-carbon and carbon-heteroatom bonds with O(2) as the oxidant and/or reactant. We have demonstrated Pd-catalyzed oxidation of carbon-carbon double bonds, Pd-catalyzed oxidation of carbon-carbon triple bonds, and Pd-catalyzed oxidative cross-coupling reactions of alkenes and/or alkynes with high selectivity. O(2) plays a critical role in the success of these transformations. Most of the reactions can tolerate a range of functional groups, and some can occur under aqueous conditions. Depending on the specific process, we propose several mechanistic scenarios that describe the in situ generation of different intermediates and discuss the plausible reaction pathways. These methods provide new strategies for the green synthesis of diverse 1,2-diols, carbonyls, lactones, conjugated dienes, trienes, and aromatic rings. These products have potential applications in natural product synthesis, materials science, and bioorganic chemistry. Given our new mechanistic understanding, we are optimistic that additional Pd-catalyzed aerobic oxidative transformations will be developed that are both more economical and environmentally friendly.
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Affiliation(s)
- Wanqing Wu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
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14
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Enantioselective silylcyanation of aldehydes catalyzed by new chiral oxovanadium complex. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.11.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Kobayashi S, Mori Y, Fossey JS, Salter MM. Catalytic Enantioselective Formation of C−C Bonds by Addition to Imines and Hydrazones: A Ten-Year Update. Chem Rev 2011; 111:2626-704. [DOI: 10.1021/cr100204f] [Citation(s) in RCA: 761] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shu̅ Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuichiro Mori
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - John S. Fossey
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K
| | - Matthew M. Salter
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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16
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Wang A, Jiang H. Palladium-catalyzed direct oxidation of alkenes with molecular oxygen: general and practical methods for the preparation of 1,2-diols, aldehydes, and ketones. J Org Chem 2010; 75:2321-6. [PMID: 20205415 DOI: 10.1021/jo100125q] [Citation(s) in RCA: 181] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
1,2-Diols, aldehydes, and ketones are important intermediates in chemical synthesis, and alkenes are possible precursors for 1,2-diols, aldehydes, and ketones. Herein, novel and environmentally benign methods for palladium-catalyzed dihydroxylation and oxidative cleavage of olefins with oxygen as sole oxidant are presented. The cleavage reactions were performed with acid as additive in aqueous solution, whereas 1,2-diols were formed in the presence of base. A broad substrate scope has been demonstrated allowing monosubstituted aromatic and aliphatic terminal alkenes, 1,2-disubstituted, and 1,1-disubstituted olefins. The cleavage reactions of dioxo-Pd(II) complexes implicate 1,2-diol might act as a key intermediate of olefin cleavage.
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Affiliation(s)
- Azhong Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
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17
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North M, Usanov DL, Young C. Lewis acid catalyzed asymmetric cyanohydrin synthesis. Chem Rev 2009; 108:5146-226. [PMID: 19067648 DOI: 10.1021/cr800255k] [Citation(s) in RCA: 286] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael North
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom.
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18
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Wang J, Wang W, Li W, Hu X, Shen K, Tan C, Liu X, Feng X. Asymmetric Cyanation of Aldehydes, Ketones, Aldimines, and Ketimines Catalyzed by a Versatile Catalyst Generated from Cinchona Alkaloid, Achiral Substituted 2,2′-Biphenol and Tetraisopropyl Titanate. Chemistry 2009; 15:11642-59. [DOI: 10.1002/chem.200900936] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Regioselective synthesis and biological evaluation of bis(indolyl)methane derivatized 1,4-disubstituted 1,2,3-bistriazoles as anti-infective agents. Bioorg Med Chem Lett 2009; 19:3611-4. [DOI: 10.1016/j.bmcl.2009.04.131] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Revised: 04/23/2009] [Accepted: 04/25/2009] [Indexed: 11/18/2022]
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20
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Belokon YN, Clegg W, Harrington RW, Maleev VI, North M, Pujol MO, Usanov DL, Young C. Mechanism-Guided Development of VO(salen)X Complexes as Catalysts for the Asymmetric Synthesis of Cyanohydrin Trimethylsilyl Ethers. Chemistry 2009; 15:2148-65. [DOI: 10.1002/chem.200801679] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Cabirol FL, Lim AEC, Hanefeld U, Sheldon RA, Lyapkalo IM. Robust and Efficient, Yet Uncatalyzed, Synthesis of Trialkylsilyl-Protected Cyanohydrins from Ketones. J Org Chem 2008; 73:2446-9. [DOI: 10.1021/jo702587e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fabien L. Cabirol
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, S(627833), Singapore, Institute of Organic Chemistry and Biochemistry, Flemingovo n. 2., 166 10 Prague 6, Czech Republic, and Biocatalysis and Organic Chemistry, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Angela E. C. Lim
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, S(627833), Singapore, Institute of Organic Chemistry and Biochemistry, Flemingovo n. 2., 166 10 Prague 6, Czech Republic, and Biocatalysis and Organic Chemistry, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Ulf Hanefeld
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, S(627833), Singapore, Institute of Organic Chemistry and Biochemistry, Flemingovo n. 2., 166 10 Prague 6, Czech Republic, and Biocatalysis and Organic Chemistry, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Roger A. Sheldon
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, S(627833), Singapore, Institute of Organic Chemistry and Biochemistry, Flemingovo n. 2., 166 10 Prague 6, Czech Republic, and Biocatalysis and Organic Chemistry, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Ilya M. Lyapkalo
- Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, S(627833), Singapore, Institute of Organic Chemistry and Biochemistry, Flemingovo n. 2., 166 10 Prague 6, Czech Republic, and Biocatalysis and Organic Chemistry, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
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22
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Connon S. The Catalytic Asymmetric Strecker Reaction: Ketimines Continue to Join the Fold. Angew Chem Int Ed Engl 2008; 47:1176-8. [DOI: 10.1002/anie.200703879] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Connon S. Die katalytische asymmetrische Strecker-Reaktion: Fortschritte bei Ketiminen. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703879] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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25
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Toward a rational design of the assembly structure of polymetallic asymmetric catalysts: design, synthesis, and evaluation of new chiral ligands for catalytic asymmetric cyanation reactions. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.02.081] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Qin B, Liu X, Shi J, Zheng K, Zhao H, Feng X. Enantioselective Cyanosilylation of α,α-Dialkoxy Ketones Catalyzed by Proline-Derived in-Situ-Prepared N-Oxide as Bifunctional Organocatalyst. J Org Chem 2007; 72:2374-8. [PMID: 17338569 DOI: 10.1021/jo062336i] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Bifunctional N,N'-dioxide catalysts have been developed for highly enantioselective cyanosilylation of alpha,alpha-dialkoxy ketones. This process, catalyzed by in-situ-prepared proline-derived N,N'-dioxide 2b, produced the corresponding cyanohydrin trimethylsilyl ethers in excellent yields (up to 99%) with high enantioselectivities (up to 93% ee). A reasonable mechanism was proposed according to the observation of the linear effect, 1H NMR spectra, isolated cyanohydrin, and the roles of the NH and N-oxide moieties of the catalyst.
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Affiliation(s)
- Bo Qin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
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27
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28
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Riant O, Hannedouche J. Asymmetric catalysis for the construction of quaternary carbon centres: nucleophilic addition on ketones and ketimines. Org Biomol Chem 2007; 5:873-88. [PMID: 17340001 DOI: 10.1039/b617746h] [Citation(s) in RCA: 394] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
There is a growing need in organic synthesis for efficient methodologies for the asymmetric synthesis of quaternary carbon centres. One of the most attractive and straightforward methods focuses on the use of asymmetric catalysis for the addition of various types of nucleophiles on prochiral ketones and ketimines. A view of the literature from this growing area of research will be presented in this review, with an emphasis on the pioneer works and milestones brought by the main players in this field.
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Affiliation(s)
- Olivier Riant
- Unité de chimie organique et médicinale, département de chimie, place Louis Pasteur 1, Université catholique de Louvain, 1348, Louvain la Neuve, Belgium.
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29
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Gauvin RM, Delevoye L, Hassan RA, Keldenich J, Mortreux A. Well-Defined Silica-Supported Rare-Earth Silylamides. Inorg Chem 2007; 46:1062-70. [PMID: 17249652 DOI: 10.1021/ic0610334] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rare-earth silylamides [Ln{N(SiMe3)2}3] [1a-d, Ln = Y (1a), La (1b), Nd (1c), Sm (1d)] react with partially dehydroxylated silica to generate the singly surface-bonded species [(Si-O)Ln{N(SiMe3)2}2] (2a-d). Trimethylsilylation of silanols occurs during the grafting process, affording in fine a hydroxyl-free surface. Contacting these well-defined surface species with excess triphenylphosphine oxide yields [(Si-O)Ln{N(SiMe3)2}2(OPPh3)] surface adducts 3a-d as the major (80%) species, leaving about 20% of unreacted siloxide bisamido species (20%). In addition to elemental analysis and infrared spectroscopy, solid-state NMR spectroscopy was used to characterize these new materials and proved to be a particularly efficient tool for the study of the paramagnetic Nd- and Sm-containing materials and for providing unambiguous verification of OPPh3 coordination on the rare-earth center. Silica-supported rare-earth amides 2a-d are active catalysts for 1-hexene and styrene hydrosilylation and for phenylacetylene dimerization. When compared to the molecular species 1a-d, grafting of the catalyst induces significant changes in the activity and selectivity of these systems.
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Affiliation(s)
- Régis M Gauvin
- Unité de Catalyse et de Chimie du Solide UMR 8181 CNRS, ENSCL, BP 90108, 59652 Villeneuve d'Ascq Cedex, France.
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Jung B, Kang SH. Chiral imine copper chloride-catalyzed enantioselective desymmetrization of 2-substituted 1,2,3-propanetriols. Proc Natl Acad Sci U S A 2007; 104:1471-5. [PMID: 17242359 PMCID: PMC1785247 DOI: 10.1073/pnas.0607865104] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Catalytic enantioselective desymmetrization of meso-2-substituted glycerols has been developed to secure a novel synthetic route to chiral tertiary alcohols. The transformation has been realized by monobenzoylation using benzoyl chloride and triethylamine in the presence of the imine ligand (25)-CuCl2 complex in THF at ambient temperature. The desymmetrization turned out to be greatly dependent on acylating reagent, base, solvent, and needless to say, catalyst. Extensive screening of chiral ligands led us to combine bromopyridinecarboxaldehyde 1 and phenyloxazoline amine 12 derived from tert-leucine, the bromo and phenyl substituents of which proved to be indispensable. All of the substrates have been desymmetrized to the corresponding monobenzoates with high enantioselectivity up to 96% enantiomeric excess. The catalytic system allows broad structural diversity of substrates and its synthetic versatility has been demonstrated by an efficient synthetic route to a known key precursor 68 of triazole antifungals.
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Affiliation(s)
- Byunghyuck Jung
- Center for Molecular Design and Synthesis, Department of Chemistry, School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
| | - Sung Ho Kang
- Center for Molecular Design and Synthesis, Department of Chemistry, School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea
- *To whom correspondence should be addressed. E-mail:
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31
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Shibasaki M, Kanai M. Catalytic enantioselective construction of tetrasubstituted carbons by self-assembled poly rare earth metal complexes. Org Biomol Chem 2007; 5:2027-39. [PMID: 17581645 DOI: 10.1039/b704542e] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rare earth metal-based enantioselective catalysts that can promote practical cyanation reactions of ketones and ketoimines were developed. These catalytic enantioselective tetrasubstituted carbon-forming reactions are useful platforms for the synthesis of biologically active compounds. ESI-MS and crystallographic studies of the asymmetric catalysts revealed that the active catalysts are polymetallic complexes produced through the assembly of modules. The higher-order structure of the polymetallic complexes has strong effects on catalyst activity and enantioselectivity. Controlling the higher-order structure of artificial polymetallic asymmetric catalysts is a new strategy for optimizing asymmetric catalysts. Recent progress in this approach is also described.
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Affiliation(s)
- Masakatsu Shibasaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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32
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Ikunaka M. Catalytic Asymmetric Carbon−Carbon Bond Formations: Their Evolution from Biocatalysis to Organocatalysis over the Millennium. Org Process Res Dev 2006. [DOI: 10.1021/op050161t] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masaya Ikunaka
- Research & Development Center, Nagase & Co., Ltd. 2-2-3 Murotani, Nishi-ku, Kobe 651-2241, Japan
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33
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Belokon YN, Blacker AJ, Clutterbuck LA, Hogg D, North M, Reeve C. An Asymmetric, Chemo-Enzymatic Synthesis ofO-Acetylcyanohydrins. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600467] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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34
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Gauvin RM, Chenal T, Hassan RA, Addad A, Mortreux A. Grafted lanthanide amides: Versatile catalysts for various transformations. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcata.2006.04.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Xiong Y, Huang X, Gou S, Huang J, Wen Y, Feng X. Enantioselective Cyanosilylation of Ketones Catalyzed by a Nitrogen-Containing Bifunctional Catalyst. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200505418] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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Fukuda N, Sasaki K, Sastry TVRS, Kanai M, Shibasaki M. Catalytic Asymmetric Total Synthesis of (+)-Lactacystin. J Org Chem 2006; 71:1220-5. [PMID: 16438540 DOI: 10.1021/jo0524223] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Total synthesis of (+)-lactacystin, a potent and selective proteasome inhibitor, was accomplished using a catalytic enantioselective Strecker reaction of a ketoimine as the initial key step. An enone-derived N-phosphinoyl ketoimine 7 was selected as a stable masked alpha-hydroxy ketoimine analogue. Excellent enantioselectivity (98% ee) and practical catalyst activity were produced under the optimized catalyst preparation method using 2.5 mol % Gd{N(SiMe3)2}3 as a metal source and 3.8 mol % D-glucose-derived ligand 8. This reaction was conducted on a 5 g scale. The chiral tetrasubstituted C-5 carbon efficiently controlled the stereochemistry of the other three chiral centers of lactacystin. Chelation-controlled Meerwein-type reduction of ketone 5 using i-PrMgBr (originally reported by Kang in a related substrate) selectively produced the desired secondary alcohol at the C-9 position. The C-6 hydroxy and C-7 methyl groups were introduced via a silyl conjugate addition followed by the Tamao oxidation and Donohoe methylation, respectively, in a highly stereoselective manner. A practical amount of enantiomerically pure clasto-lactacystin beta-lactone (2), the biologically active form of (+)-lactacystin, can be synthesized using this route. clasto-Lactacystin beta-lactone (2) was converted to (+)-lactacystin following the reported procedure.
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Affiliation(s)
- Nobuhisa Fukuda
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033
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