1
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Namitharan K, Cellnik T, Mukanova A, Kim S, Healy AR. A Dual Role for the N-Perfluorobutanesulfinamide Auxiliary in an Asymmetric Decarboxylative Mannich Reaction. Org Lett 2024; 26:8810-8815. [PMID: 39348273 DOI: 10.1021/acs.orglett.4c03139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/02/2024]
Abstract
Herein, we demonstrate that the enhanced electrophilicity of N-perfluorobutanesulfinamide auxiliary-derived imines enables a highly selective decarboxylative Mannich reaction under mild conditions. The molecular sieves-mediated transformation tolerates a broad substrate scope and produces chiral β-amino thioesters in high yield. Additionally, we demonstrate that the N-perfluoroalkyl sulfinyl group can function as a phase tag for fluorous purification, thus enabling the rapid isolation of the chiral amine products by solid-phase extraction. The synthetic utility of this method is illustrated by the synthesis of sitagliptin, ruspolinone, and the natural product negamycin.
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Affiliation(s)
- Kayambu Namitharan
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates (UAE)
| | - Torsten Cellnik
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates (UAE)
| | - Assel Mukanova
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates (UAE)
| | - Shinwon Kim
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates (UAE)
| | - Alan R Healy
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates (UAE)
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2
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Rahman MA, Rehan M, Cellnik T, Ahuja BB, Healy AR. An Enantioselective Decarboxylative Glycolate Aldol Reaction. Org Lett 2024. [PMID: 39388361 DOI: 10.1021/acs.orglett.4c03251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2024]
Abstract
Herein, we report the application of a benzyloxy-functionalized malonic acid half thioester as an activated ester equivalent in a highly enantioselective decarboxylative glycolate aldol reaction. This robust method operates at ambient temperature, tolerates air and moisture, and generates CO2 as the only byproduct. The synthetic applicability of the method is demonstrated by the large-scale enantiodivergent synthesis of α-benzyloxy-β-hydroxybutyric acid thioester and its subsequent conversion to diverse polyoxygenated building blocks, deoxy-sugars, and (-)-angiopterlactone B.
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Affiliation(s)
- Md Ataur Rahman
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates
| | - Mohammad Rehan
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates
| | - Torsten Cellnik
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates
| | - Brij Bhushan Ahuja
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates
| | - Alan R Healy
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, United Arab Emirates
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3
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Jo WS, Curtis BJ, Rehan M, Adrover-Castellano ML, Sherman DH, Healy AR. N-to- S Acyl Transfer as an Enabling Strategy in Asymmetric and Chemoenzymatic Synthesis. JACS AU 2024; 4:2058-2066. [PMID: 38818054 PMCID: PMC11134368 DOI: 10.1021/jacsau.4c00257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 06/01/2024]
Abstract
The observation of thioester-mediated acyl transfer processes in nature has inspired the development of novel protein synthesis and functionalization methodologies. The chemoselective transfer of an acyl group from S-to-N is the basis of several powerful ligation strategies. In this work, we sought to apply the reverse process, the transfer of an acyl group from N-to-S, as a method to convert stable chiral amides into more reactive thioesters. To this end, we developed a novel cysteine-derived oxazolidinone that serves as both a chiral imide auxiliary and an acyl transfer agent. This auxiliary combines the desirable features of rigid chiral imides as templates for asymmetric transformations with the synthetic applicability of thioesters. We demonstrate that the auxiliary can be applied in a range of highly selective asymmetric transformations. Subsequent intramolecular N-to-S acyl transfer of the chiral product and in situ trapping of the resulting thioester provides access to diverse carboxylic acid derivatives under mild conditions. The oxazolidinone thioester products can also be isolated and used in Pd-mediated transformations to furnish highly valuable chiral scaffolds, such as noncanonical amino acids, cyclic ketones, tetrahydropyrones, and dihydroquinolinones. Finally, we demonstrate that the oxazolidinone thioesters can also serve as a surrogate for SNAC-thioesters, enabling their seamless use as non-native substrates in biocatalytic transformations.
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Affiliation(s)
- Woonkee S Jo
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi 129188, United Arab Emirates (UAE)
| | - Brian J Curtis
- Life Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109, USA
| | - Mohammad Rehan
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi 129188, United Arab Emirates (UAE)
| | | | - David H Sherman
- Life Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109, USA
- Departments of Medicinal Chemistry, Chemistry, and Microbiology & Immunology, University of Michigan, Ann Arbor, MI 48109USA
| | - Alan R Healy
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi 129188, United Arab Emirates (UAE)
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4
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Wang S, Wu Z, Li J, Zhu Y, Zheng S, Jiang C, Lu H. Electrochemical decarboxylative alkylation of β-ketoacids with phenol derivatives. Chem Commun (Camb) 2024; 60:1329-1332. [PMID: 38197300 DOI: 10.1039/d3cc05489f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
An electrochemical method for the decarboxylative alkylation of β-ketoacids with phenol derivatives has been developed. The protocol was carried out in readily available unseparated cells at room temperature in the absence of catalysts and oxidants. The corresponding aryl ketones were obtained in satisfactory yields without additional electrolytes, and were easy to produce in gram-scale synthesis. Based on control experiments and cyclic voltammetry, a plausible reaction mechanism was proposed.
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Affiliation(s)
- Shan Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Zhaotian Wu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Junqiang Li
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Yujun Zhu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Shaojun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Chunhui Jiang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
| | - Hongfei Lu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China.
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5
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Shi Y, Chen L, Gao Q, Li J, Guo Y, Fan B. Application of Oxazaborolidine Catalysts (CBS) on Enantioselective 1,4-Addition of Diarylphosphine Oxides to α,β-Unsaturated Thioesters. Org Lett 2023; 25:6495-6500. [PMID: 37646432 DOI: 10.1021/acs.orglett.3c02138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Here, we report the first catalytic enantioselective 1,4-addition of diarylphosphine oxides to α,β-unsaturated thioesters. Importantly, the most common and commercial oxazaborolidine (CBS) was employed as a catalyst for its new application without being activated by strong protonic acids or Lewis acids and led to the chiral thioesters in excellent yields and enantioselectivities. Furthermore, this method features mild reaction conditions (room temperature and air-insensitive), good substrate tolerance, and easy scalability.
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Affiliation(s)
- Yinrui Shi
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China
| | - Lirong Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China
| | - Qi Gao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China
| | - Jiuling Li
- School of Chemistry & Environment, Key Laboratory of Advanced Synthetic Chemistry (Yunnan Minzu University) State Ethnic Affairs Commission, Yunnan Minzu University, Kunming 650500, China
| | - Yafei Guo
- School of Chemistry & Environment, Key Laboratory of Advanced Synthetic Chemistry (Yunnan Minzu University) State Ethnic Affairs Commission, Yunnan Minzu University, Kunming 650500, China
| | - Baomin Fan
- School of Chemistry & Environment, Key Laboratory of Advanced Synthetic Chemistry (Yunnan Minzu University) State Ethnic Affairs Commission, Yunnan Minzu University, Kunming 650500, China
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6
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Rahman MA, Cellnik T, Ahuja BB, Li L, Healy AR. A catalytic enantioselective stereodivergent aldol reaction. SCIENCE ADVANCES 2023; 9:eadg8776. [PMID: 36921040 PMCID: PMC10017038 DOI: 10.1126/sciadv.adg8776] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
The aldol reaction is among the most powerful and strategically important carbon-carbon bond-forming transformations in organic chemistry. The importance of the aldol reaction in constructing chiral building blocks for complex small-molecule synthesis has spurred continuous efforts toward the development of direct catalytic variants. The realization of a general catalytic aldol reaction with control over both the relative and absolute configurations of the newly formed stereogenic centers has been a longstanding goal in the field. Here, we report a decarboxylative aldol reaction that provides access to all four possible stereoisomers of the aldol product in one step from identical reactants. The mild reaction can be carried out on a large scale in an open flask, and generates CO2 as the only by-product. The method tolerates a broad substrate scope and generates chiral β-hydroxy thioester products with substantial downstream utility.
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Affiliation(s)
- Md. Ataur Rahman
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, United Arab Emirates (UAE)
| | - Torsten Cellnik
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, United Arab Emirates (UAE)
| | - Brij Bhushan Ahuja
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, United Arab Emirates (UAE)
| | - Liang Li
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, United Arab Emirates (UAE)
- Department of Sciences and Engineering, Sorbonne University Abu Dhabi, Abu Dhabi, United Arab Emirates (UAE)
| | - Alan R. Healy
- Chemistry Program, New York University Abu Dhabi (NYUAD), Saadiyat Island, Abu Dhabi, United Arab Emirates (UAE)
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7
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Wang X, Ji Z, Liu J, Wang B, Jin H, Zhang L. Advances in Organocatalytic Asymmetric Reactions Involving Thioesters. ACTA CHIMICA SINICA 2023. [DOI: 10.6023/a22100422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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8
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Borrmann R, Zetschok D, Wennemers H. Decarboxylative Organocatalyzed Aldol-Type Addition Reaction of Chloroacetate Surrogates. Org Lett 2022; 24:8683-8687. [DOI: 10.1021/acs.orglett.2c03568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Rüdiger Borrmann
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog Weg 3, CH-8093 Zurich, Switzerland
| | - Dominik Zetschok
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog Weg 3, CH-8093 Zurich, Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog Weg 3, CH-8093 Zurich, Switzerland
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9
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Wang X, Feng F, Nie J, Zhang F, Ma J. Enantioselective Construction of Amino Carboxylic‐Phosphonic Acid Derivatives Enabled by Chiral Amino Thiourea‐Catalyzed Decarboxylative Mannich Reaction. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xue‐Qi Wang
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
| | - Fang‐Fang Feng
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
| | - Jing Nie
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
| | - Fa‐Guang Zhang
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
| | - Jun‐An Ma
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
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10
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Ren Y, Lu S, He L, Zhao Z, Li SW. Catalytic Asymmetric Decarboxylative Michael Addition To Construct an All-Carbon Quaternary Center with 3-Alkenyl-oxindoles. Org Lett 2022; 24:2585-2589. [PMID: 35357198 DOI: 10.1021/acs.orglett.2c00411] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The first highly enantioselective asymmetric decarboxylative addition of β-keto acids with 3-alkenyl-oxindoles bearing an all-carbon quaternary stereocenter have been developed. The relevant products were acquired in 49-98% yields with 88-98% enantioselectivities in the presence of 0.04-1.0 mol % of chiral rhodium catalyst. The comprehensive practicability of this method was proven in the preparation of the key intermediate, which can be easily transformed into analogues of physovenine and physostigmine.
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Affiliation(s)
- Yingzheng Ren
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemitry and Chemical Engneeng, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Shuhui Lu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemitry and Chemical Engneeng, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Lin He
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemitry and Chemical Engneeng, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Zhifei Zhao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemitry and Chemical Engneeng, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Shi-Wu Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemitry and Chemical Engneeng, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
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11
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Chowdhury R, Dubey MK, Waser M. Catalytic Enantioselective Decarboxylative Aldol reactions of Malonic acid half thio(oxy)ester and β‐ketoacids. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Raghunath Chowdhury
- Bhabha Atomic Research Centre Bio-Organic Division Tombay 400085 Mumbai INDIA
| | | | - Mario Waser
- Johannes Kepler Universität Linz: Johannes Kepler Universitat Linz Institute of Organic Chemistry AUSTRIA
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12
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Shao N, Monnier V, Charles L, Rodriguez J, Bressy C, Quintard A. Multi‐catalytic Enantioselective Synthesis of 1,3‐Diols Containing a Tetrasubstituted Fluorinated Stereocenter. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Na Shao
- Aix Marseille Univ, CNRS, Centrale Marseille iSm2 Marseille France
| | - Valérie Monnier
- Aix Marseille Univ, CNRS, Centrale Marseille FSCM Marseille France
| | | | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale Marseille iSm2 Marseille France
| | - Cyril Bressy
- Aix Marseille Univ, CNRS, Centrale Marseille iSm2 Marseille France
| | - Adrien Quintard
- Aix Marseille Univ, CNRS, Centrale Marseille iSm2 Marseille France
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13
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Jadhav AP, Park SY, Lee JW, Yan H, Song CE. Cooperative Asymmetric Cation-Binding Catalysis. Acc Chem Res 2021; 54:4319-4333. [PMID: 34784182 DOI: 10.1021/acs.accounts.1c00400] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Asymmetric cation-binding catalysis in principle enables the use of (alkali) metal salts, otherwise insoluble in organic solvents, as reagents and effectors in enantioselective reactions. However, this concept has been a formidable challenge due to the difficulties associated with creating a highly organized chiral environment for cations and anions simultaneously. Over the last four decades, various chiral crown ethers have been developed as cation-binding phase-transfer catalysts and examined in asymmetric catalysis. However, the limited ability of chiral crown ethers to generate soluble reactive anions in a confined chiral cage offers a restricted reaction scope and unsatisfactory chirality induction. To address the constraints of monofunctional chiral crown ethers as cation-binding catalysts, it is therefore desirable to develop a cooperative cation-binding catalyst possessing secondary binding sites for anions, which enables the generation of a reactive anion within a chiral cage of a catalyst. This account summarizes our design, development, and applications of chiral BINOL-based oligoethylene glycols (oligoEGs) as a new type of bifunctional cation-binding catalyst. We initially found that achiral oligoEGs were efficient promoters in nucleophilic fluorination with potassium fluoride. Thereby, we hypothesized that, by breaking the closed cyclic ether unit of chiral crown ethers, the free terminal -OH groups could activate the electrophiles by hydrogen bonding whereas the ether oxygens could act as the Lewis base to coordinate metal ions, thus generating soluble anions in a confined chiral cage. This hypothesis was realized by synthesizing a series of chiral variants of oligoEGs by connecting two 3,3'-disubstituted-BINOL units with glycol linkers. Readily available BINOL-based chiral oligoEGs enabled numerous asymmetric transformations out of the reach of chiral monofunctional crown ether catalysts. We have demonstrated that this new type of bifunctional cation-binding catalysts can generate a soluble fluoride anion from alkali metal fluorides, which can be a versatile chiral promoter for diverse asymmetric catalytic reactions, kinetic resolution (selectivity factor of up to ∼2300), asymmetric protonation, Mannich reactions, tandem cyclization reactions, and the isomerization of allylic alcohols and hemithioacetals. We have also successfully utilized our chiral oligoEG catalysts along with alkali metal salts of carbon- and heteroatom-based nucleophiles, respectively, for asymmetric Strecker reactions and the asymmetric synthesis of chiral aminals. The power of our cooperative cation-binding catalysis was exemplified by kinetic resolution reactions of secondary alcohols, achieving highly enantioselective catalysis with only <1 ppm loading of an organocatalyst with high TOFs (up to ∼1300 h-1 at 1 ppm catalyst loading). The broadness and generality of our cooperative asymmetric cation-binding catalysis can be ascribed, in a similar fashion, to active-site architectures of enzymes using allosteric interactions, highly confined chiral cages formed by the incorporation of alkali metal salts in the catalyst polyether chain backbone, and the cooperative activation of reacting partners by hydrogen-bonding and ion-ion interactions. Confining reactive components in such a chiral binding pocket leads to enhanced reactivity and efficient transfer of the stereochemical information.
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Affiliation(s)
- Amol P. Jadhav
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746 Korea
| | - Sang Yeon Park
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746 Korea
| | - Ji-Woong Lee
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Hailong Yan
- Innovative Drug Research Centre, Chongqing University, Chongqing 401331, China
| | - Choong Eui Song
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746 Korea
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14
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Luo N, Ao YF, Wang DX, Wang QQ. π-Face Promoted Catalysis in Water: From Electron-deficient Molecular Cages to Single Aromatic Slides. Chem Asian J 2021; 16:3599-3603. [PMID: 34464026 DOI: 10.1002/asia.202100920] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/30/2021] [Indexed: 12/13/2022]
Abstract
Exploiting noncovalent π-interactions particularly emerging anion-π interactions to drive efficient catalysis is fascinating. Even with exciting progresses, can anion-π activation operate in water remains elusive. Here we report the design, synthesis and catalytic studies of a class of water-soluble electron-deficient molecular cages and relevant aromatic slide compounds. The prism-like cages contain three divided, long, cationic aromatic walls which constitute three highly electron-deficient V-shape cavities. They were efficiently synthesized in two steps from a parent triformyl cage in gram-scale. Crystal structure showed the π-walls bind to the counter bromide through strong anion-π interactions. Just 5 mol% of cages were effective in catalyzing decarboxylative Aldol reactions of aldehydes and malonic acid half thioesters in water but not in organic solvents, showing a pronounced hydrophobic amplification effect. Meantime, a series of single π-slides resembling the π-wall of the cage performed equally well, while those lacking an extended π-surface were ineffective, highlighting the essential role of electron-deficient π-face on promoting the conversion.
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Affiliation(s)
- Na Luo
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yu-Fei Ao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - De-Xian Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qi-Qiang Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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15
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Tözendemir D, Tanyeli C. The synthesis of chiral β-naphthyl-β-sulfanyl ketones via enantioselective sulfa-Michael reaction in the presence of a bifunctional cinchona/sulfonamide organocatalyst. Beilstein J Org Chem 2021; 17:494-503. [PMID: 33727972 PMCID: PMC7934708 DOI: 10.3762/bjoc.17.43] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/07/2021] [Indexed: 11/23/2022] Open
Abstract
Cinchona alkaloid-derived organocatalysts are widely employed in various asymmetric transformations, yielding products with high enantiopurity. In this respect, a bifunctional quinine-derived sulfonamide organocatalyst was developed to catalyze the asymmetric sulfa-Michael reaction of naphthalene-1-thiol with trans-chalcone derivatives. The target sulfa-Michael adducts were obtained with up to 96% ee under mild conditions and with a low (1 mol %) catalyst loading. Selected enantiomerically enriched sulfa-Michael addition products were subjected to oxidation to obtain the corresponding sulfones.
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Affiliation(s)
- Deniz Tözendemir
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
| | - Cihangir Tanyeli
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
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16
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Takemoto Y, Tokuhiro Y, Hayama N, Kobayashi Y. Bifunctional-Benzothiadiazine-Catalyzed Regio- and Stereoselective Aldol Reactions Using A 1,3-Acetonedicarboxylic Acid Monoester. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Hu F, Chen Z, Tan Y, Xu D, Huang S, Jia S, Gong X, Qin W, Yan H. Organocatalytic Enantioselective γ-Elimination: Applications in the Preparation of Chiral Peroxides and Epoxides. Org Lett 2020; 22:1934-1940. [PMID: 32057244 DOI: 10.1021/acs.orglett.0c00295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An organocatalyzed enantioselective γ-elimination process has been achieved and applied in the kinetic resolution of peroxides to access chiral peroxides and epoxides. The reaction provided a pathway for the preparation of two useful synthetic and biologically important structural motifs through a single-step reaction. A range of substrates has been resolved with a selectivity factor up to 63. The obtained enantioenriched peroxides and epoxides allowed a series of transformations with retained optical purities.
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Affiliation(s)
- Fangli Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Zhili Chen
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Yu Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Da Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Shengli Huang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Shiqi Jia
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Xiangnan Gong
- Analytical and Testing Center of Chongqing University, Chongqing University, Chongqing 401331, P. R. China
| | - Wenling Qin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
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18
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Sperandio C, Rodriguez J, Quintard A. Three-Component Multi-Catalytic Enantioselective Oxa-Michael/Aldolization Sequence and Application to (+)-Yashabushitriol Synthesis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000185] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Céline Sperandio
- Centrale Marseille, iSm2; Aix Marseille Univ, CNRS; Marseille France
| | - Jean Rodriguez
- Centrale Marseille, iSm2; Aix Marseille Univ, CNRS; Marseille France
| | - Adrien Quintard
- Centrale Marseille, iSm2; Aix Marseille Univ, CNRS; Marseille France
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19
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Moon PJ, Lundgren RJ. Metal-Catalyzed Ionic Decarboxylative Cross-Coupling Reactions of C(sp3) Acids: Reaction Development, Mechanisms, and Application. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04956] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Patrick J. Moon
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Rylan J. Lundgren
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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20
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Peng L, Li K, Xie C, Li S, Xu D, Qin W, Yan H. Organocatalytic Asymmetric Annulation of
ortho
‐Alkynylanilines: Synthesis of Axially Chiral Naphthyl‐C2‐indoles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908961] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Lei Peng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Kai Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Chuandong Xie
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Shan Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Da Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Wenling Qin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
- Key Laboratory of Biorheological Science and TechnologyMinistry of EducationCollege of BioengineeringChongqing University Chongqing 400044 China
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21
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Peng L, Li K, Xie C, Li S, Xu D, Qin W, Yan H. Organocatalytic Asymmetric Annulation of
ortho
‐Alkynylanilines: Synthesis of Axially Chiral Naphthyl‐C2‐indoles. Angew Chem Int Ed Engl 2019; 58:17199-17204. [DOI: 10.1002/anie.201908961] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/27/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Lei Peng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Kai Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Chuandong Xie
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Shan Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Da Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Wenling Qin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug ResearchChemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
- Key Laboratory of Biorheological Science and TechnologyMinistry of EducationCollege of BioengineeringChongqing University Chongqing 400044 China
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22
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Jia S, Li S, Liu Y, Qin W, Yan H. Enantioselective Control of Both Helical and Axial Stereogenic Elements though an Organocatalytic Approach. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909214] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shiqi Jia
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Shan Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Yidong Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Wenling Qin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research CenterSchool of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
- Key Laboratory of Biorheological Science and TechnologyMinistry of Education, College of BioengineeringChongqing University Chongqing 400044 P. R. China
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23
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Jia S, Li S, Liu Y, Qin W, Yan H. Enantioselective Control of Both Helical and Axial Stereogenic Elements though an Organocatalytic Approach. Angew Chem Int Ed Engl 2019; 58:18496-18501. [PMID: 31608559 DOI: 10.1002/anie.201909214] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/08/2019] [Indexed: 12/22/2022]
Abstract
A highly diastereo- and enantio-selective method for the asymmetric synthesis of molecules containing helicenes and stereogenic axes was developed based on organocatalysis. Various compounds bearing both helical and axial stereogenic elements were obtained in excellent enantioselectivities. The mechanism study revealed that the reaction proceeded through two stages: 1) The first cyclization produces a reaction intermediate containing a stereogenic axis. 2) The dynamic kinetic resolution of helix reaction intermediate following with cyclization generates a helix and another stereogenic axis.
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Affiliation(s)
- Shiqi Jia
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P. R. China
| | - Shan Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P. R. China
| | - Yidong Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P. R. China
| | - Wenling Qin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P. R. China.,Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
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24
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Qiu ZB, Ren XF, Chen XY, Chen LY, Ji J, Li Y. MgBr2OEt2-promoted direct Aldol reactions of S-aryl 2-fluoroethanethioate. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2019.109368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Wang N, Liu H, Gao H, Zhou J, Zheng L, Li J, Xiao HP, Li X, Jiang J. Ni(II)-Catalyzed Enantioselective Synthesis of β-Hydroxy Esters with Carboxylate Assistance. Org Lett 2019; 21:6684-6689. [PMID: 31393737 DOI: 10.1021/acs.orglett.9b02297] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Ni-oxazoline complex-catalyzed asymmetric decarboxylative aldol reaction between malonic acid half-oxyesters and various carbonyls with carboxylate assistance was developed, affording structurally diverse β-hydroxy esters with good yields and enantioselectivities under mild conditions. Importantly, the broad substrate scope of this methodology enabled rapid accesses to several natural products and their analogues as exemplified by phenylpropanoid, phaitanthrin B, and phthalide.
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Affiliation(s)
- Na Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Hongxin Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Hang Gao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jiafeng Zhou
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Longzhangdi Zheng
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Juan Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Hong-Ping Xiao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xinhua Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jun Jiang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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26
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Jiang C, Chen Y, Zhang H, Tan JP, Wang T. Catalyst-Free Synthesis of α-Functionalized 2H-Chromenes in Water: A Tandem Self-Promoted pseudo-Substitution and Decarboxylation Process. Chem Asian J 2019; 14:2938-2944. [PMID: 31298487 DOI: 10.1002/asia.201900641] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/01/2019] [Indexed: 11/07/2022]
Abstract
A catalyst-free decarboxylative reaction between β-keto acids and 2H-chromene acetals in water was developed. This reaction featured a broad substrate scope and easily obtainable starting materials to afford α-functionalized 2H-chromenes in high yields. The synthetic value of this protocol was also demonstrated by the scale-up synthesis and versatile conversions of the title product into other useful compounds. In addition, control experiments indicated that water was essential for the reactivity. Mechanistic studies further revealed that the reaction proceeded through a self-promoted tandem pseudo-substitution and decarboxylation process.
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Affiliation(s)
- Chunhui Jiang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, P. R. China.,Key Laboratory of Green Chemistry&Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Yayun Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003, P. R. China.,Key Laboratory of Green Chemistry&Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Hongkui Zhang
- Key Laboratory of Green Chemistry&Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jian-Ping Tan
- Key Laboratory of Green Chemistry&Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry&Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
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27
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Park JH, Sim JH, Song CE. Direct Access to β-Trifluoromethyl-β-hydroxy Thioesters by Biomimetic Organocatalytic Enantioselective Aldol Reaction. Org Lett 2019; 21:4567-4570. [PMID: 31184184 DOI: 10.1021/acs.orglett.9b01469] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A broadly applicable biomimetic enantioselective decarboxylative catalytic aldol reaction of trifluoromethyl ketones with malonic acid half-thioesters (MAHTs) is described. Utilizing cinchona-based thioureas as highly efficient polyketide synthase-mimic catalysts, chiral tertiary aldols, β-trifluoromethyl-β-hydroxy thioesters, were obtained in up to 99% yield and 95% ee. Facile transformation of the thioester moiety of the aldol adducts showcases the synthetic utility of this biomimetic aldol protocol to deliver a range of chiral trifluoromethylated tertiary aldol pharmacophores.
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Affiliation(s)
- Jin Hyun Park
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
| | - Jae Hun Sim
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
| | - Choong Eui Song
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
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28
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Guo L, Plietker B. β‐Ketoesters as Mono‐ or Bisnucleophiles: A Concise Enantioselective Total Synthesis of (−)‐Englerin A and B. Angew Chem Int Ed Engl 2019; 58:8346-8350. [DOI: 10.1002/anie.201900401] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/21/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Lei Guo
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Bernd Plietker
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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29
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Guo L, Plietker B. β‐Ketoesters as Mono‐ or Bisnucleophiles: A Concise Enantioselective Total Synthesis of (−)‐Englerin A and B. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900401] [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]
Affiliation(s)
- Lei Guo
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Bernd Plietker
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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30
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Bojanowski J, Albrecht A. Carboxylic‐Acid‐Activated Olefins in Decarboxylative Reactions. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900166] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jan Bojanowski
- Institute of Organic Chemistry Faculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
| | - Anna Albrecht
- Institute of Organic Chemistry Faculty of ChemistryLodz University of Technology Żeromskiego 116 90-924 Łódź Poland
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31
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Maity R, Das B, Das I. Transition‐Metal‐Free Reduction of
α
‐Keto Thioesters with Hydrosilanes at Room Temperature: Divergent Synthesis through Reagent‐Controlled Chemoselectivities. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900222] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Rajib Maity
- Organic and Medicinal Chemistry DivisionCSIR-Indian Institute of Chemical Biology 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Bhanuranjan Das
- Organic and Medicinal Chemistry DivisionCSIR-Indian Institute of Chemical Biology 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Indrajit Das
- Organic and Medicinal Chemistry DivisionCSIR-Indian Institute of Chemical Biology 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
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32
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Khopade TM, Warghude PK, Sonawane AD, Bhat RG. Multicomponent synthesis of pyroglutamic acid derivatives via Knoevenagel-Michael-hydrolysis-lactamization-decarboxylation (KMHL-D) sequence. Org Biomol Chem 2019; 17:561-566. [PMID: 30574984 DOI: 10.1039/c8ob02473a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel and practical method for the synthesis of 3-substituted pyroglutamic acid derivatives is described. One pot multicomponent reaction of Meldrum's acid, aldehyde and Schiff's base followed an unprecedented chemoselective Knoevenagel-Michael-hydrolysis-lactamization domino sequence to afford 4-carboxy 3-substituted pyroglutamic acid derivatives under mild conditions. A carboxy intermediate formed appears to accelerate its own formation. The generality of the synthesis is exemplified by the use of a wide variety of aldehydes including enolizable aliphatic aldehydes, while substrates are stable under reaction conditions.
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Affiliation(s)
- Tushar M Khopade
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune, Dr Homi Bhabha Road, Pashan, 411008, Pune, Maharashtra, India.
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33
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Jiang C, Chen Y, Huang G, Ni C, Liu X, Lu H. Scandium(III)-Catalysed Decarboxylative Addition of β-
Ketoacids to para
-Quinone Methides: Evidence for 1,6-Addition and Base-Assisted Decarboxylation Tandem Process. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800729] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chunhui Jiang
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| | - Yayun Chen
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| | - Gaokui Huang
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| | - Cheng Ni
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
| | - Xiaoqian Liu
- School of pharmaceutical and life science; Changzhou University
| | - Hongfei Lu
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 2 Mengxi Road, Zhenjiang Jiangsu 212003 China
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34
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Zhang N, He T, Liu Y, Li S, Tan Y, Peng L, Li D, Shan C, Yan H. Organocatalytic atropo- and E/Z-selective Michael addition reaction of ynones with α-amido sulfones as sulfone-type nucleophile. Org Chem Front 2019. [DOI: 10.1039/c8qo01241e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We describe herein the first enantioselective organocatalytic Michael addition reaction of α-amido sulfones to ynones to access axially chiral styrenes.
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Affiliation(s)
- Nan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Tingting He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Yidong Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Shan Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Yu Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Lei Peng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Dongmei Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Chunhui Shan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing 401331
- China
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35
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Wang J, Deng ZX, Wang CM, Xia PJ, Xiao JA, Xiang HY, Chen XQ, Yang H. Unraveling and Manipulating the Stereospecific Retro-Aldol Reaction in the Organocatalytic Asymmetric Aldol Reaction of Isatin and Cyclohexanone. Org Lett 2018; 20:7535-7538. [PMID: 30411899 DOI: 10.1021/acs.orglett.8b03292] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
An l-pyroglutamic acid-derived bifunctional organocatalyst was designed and applied in an organocatalytic asymmetric direct aldol reaction between isatins and cyclohexanone, in which an erosion of enantiomeric excess of aldol adduct was unexpectedly observed. Through closely monitoring the reaction and performing extensive control experiments, it was determined that the erosion of ee was attributed to a rare stereospecific retro-aldol process. Moreover, effective manipulation of the retro-aldol process by tuning the use of starting materials was ultimately accomplished, leading to evidently upgraded enantioselectivity and functional group tolerance. This study demonstrates the impact of the hidden reaction pathway on the enantioselectivity in asymmetric transformation.
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Affiliation(s)
- Jing Wang
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Zhi-Xiong Deng
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Chao-Ming Wang
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Peng-Ju Xia
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science , Guangxi Teachers Education University , Nanning 530001 , Guangxi , P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China.,Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety , Central South University , Changsha 410083 , P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China.,Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety , Central South University , Changsha 410083 , P. R. China
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36
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Zhang H, Lu Z. Nickel/Copper Dual Catalysis for Sequential Nazarov Cyclization/Decarboxylative Aldol Reaction. Org Lett 2018; 20:5709-5713. [PMID: 30160123 DOI: 10.1021/acs.orglett.8b02426] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A nickel/copper cocatalyzed sequential Nazarov cyclization/decarboxylative aldol reaction is reported. Various β-hydroxycyclopentenones containing three contiguous stereocenters were prepared in good yields with high diastereoselectivities. A gram-scale reaction and further derivatizations were easily achieved to highlight the synthetic utility of this transformation. Preliminary attempts for sequential asymmetric transformation were also conducted.
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Affiliation(s)
- Heyi Zhang
- Department of Chemistry , Zhejiang University , 866 Yuhangtang Road , Hangzhou 310058 , China
| | - Zhan Lu
- Department of Chemistry , Zhejiang University , 866 Yuhangtang Road , Hangzhou 310058 , China
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37
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Chaumont P, Baudoux J, Maddaluno J, Rouden J, Harrison-Marchand A. Access to Anti or Syn 2-Amino-1,3-diol Scaffolds from a Common Decarboxylative Aldol Adduct. J Org Chem 2018; 83:8081-8091. [PMID: 29953234 DOI: 10.1021/acs.joc.8b00901] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A straightforward synthetic pathway allowing the access to anti or syn 2-amino-1,3-diol scaffolds is presented. The strategy relies on a diastereoselective organocatalyzed decarboxylative aldol reaction of a N-Boc-hemimalonate that is easily formed from commercial N-Boc-diethyl malonate. Although this method has been optimized previously with the N-Bz-hemimalonate analogue, this key step was reinvestigated with the N-Boc derivative to improve the required reaction time, the yield, and the diastereoselectivity. The new conditions enhance this transformation, and quantitative yields and anti/syn ratios up to 96:4 can be obtained. The anti aldol product was easily isolated in pure form and then taken forward as the key precursor in the preparation of both a set of ten N-/O-alkylated anti 2-amino-1,3-diol derivatives and the syn congeners.
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Affiliation(s)
- Pauline Chaumont
- Laboratoire COBRA (UMR 6014 & FR 3038) , Normandie Université, UNIROUEN, INSA Rouen, CNRS , 76000 Rouen , France
| | - Jérome Baudoux
- Laboratoire LCMT (UMR 6507 & FR 3038) , Normandie Université, ENSICAEN, UNICAEN, CNRS , 14000 Caen , France
| | - Jacques Maddaluno
- Laboratoire COBRA (UMR 6014 & FR 3038) , Normandie Université, UNIROUEN, INSA Rouen, CNRS , 76000 Rouen , France
| | - Jacques Rouden
- Laboratoire LCMT (UMR 6507 & FR 3038) , Normandie Université, ENSICAEN, UNICAEN, CNRS , 14000 Caen , France
| | - Anne Harrison-Marchand
- Laboratoire COBRA (UMR 6014 & FR 3038) , Normandie Université, UNIROUEN, INSA Rouen, CNRS , 76000 Rouen , France
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38
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Zhu YJ, Lei ZL, Huang DK, Lian B, Liu ZJ, Hu XJ, Liu JT. Decarboxylative difluoromethylation of aldehydes with PhSO 2 CF 2 COOK: A facile and efficient access to difluoromethylated carbinols. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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39
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Zheng ZJ, Yu TY, Xu PF, Wei H. (Diacetoxyiodo)benzene-mediated Selective Synthesis of α-Azido Ketones or Acyl Azides from β-Keto Acids. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800319] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhao-Jing Zheng
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 China
| | - Tian-Yang Yu
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering; Lanzhou University; Lanzhou 730000 China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
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40
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Jia S, Chen Z, Zhang N, Tan Y, Liu Y, Deng J, Yan H. Organocatalytic Enantioselective Construction of Axially Chiral Sulfone-Containing Styrenes. J Am Chem Soc 2018; 140:7056-7060. [DOI: 10.1021/jacs.8b03211] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Shiqi Jia
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Zhili Chen
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Nan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Yu Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Yidong Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Jun Deng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
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41
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Paladhi S, Hwang IS, Yoo EJ, Ryu DH, Song CE. Kinetic Resolution of β-Hydroxy Carbonyl Compounds via Enantioselective Dehydration Using a Cation-Binding Catalyst: Facile Access to Enantiopure Chiral Aldols. Org Lett 2018. [PMID: 29537279 DOI: 10.1021/acs.orglett.8b00547] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A practical and highly enantioselective nonenzymatic kinetic resolution of racemic β-hydroxy carbonyl (aldol) compounds through enantioselective dehydration process was developed using a cation-binding Song's oligoethylene glycol (oligoEG) catalyst with potassium fluoride (KF) as base. A wide range of racemic aldols was resolved with extremely high selectivity factors ( s = up to 2393) under mild reaction conditions. This protocol is easily scalable. It provides an alternative approach for the syntheses of diverse biologically and pharmaceutically relevant chiral aldols in enantiomerically pure form. For example, racemic gingerols could participate in this kinetic resolution with superb efficiency ( s > 240), affording both enantiomerically pure gingerols and corresponding shogaols simultaneously in a single step. The dramatic effectiveness of such kinetic resolution process can be ascribed to systematic cooperative hydrogen-bonding catalysis in a densely confined supramolecular chiral cage in situ generated from the chiral catalyst, substrate, and KF.
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Affiliation(s)
- Sushovan Paladhi
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea.,Department of Chemistry , A.N.S. College , Barh , Patna 803213 , India
| | - In-Soo Hwang
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
| | - Eun Jeong Yoo
- Department of Chemistry , Kangwon National University , Chuncheon 24341 , Korea
| | - Do Hyun Ryu
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
| | - Choong Eui Song
- Department of Chemistry , Sungkyunkwan University , Suwon 16419 , Korea
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42
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Akagawa K, Kudo K. Iterative Polyketide Synthesis via a Consecutive Carbonyl-Protecting Strategy. J Org Chem 2018; 83:4279-4285. [PMID: 29509410 DOI: 10.1021/acs.joc.8b00497] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To address the difficulty in protecting a β-polycarbonyl compound, a method for the sequential protection of elongating carbonyl groups was demonstrated. The iterative chain elongation of a carboxylic acid with malonic acid half thioester followed by the protection of the resulting β-ketothioester was performed via the stepwise formation of an isoxazole ring using an O-protected oxime functionality. Yangonin and isosakuranetin were synthesized according to this procedure.
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Affiliation(s)
- Kengo Akagawa
- Institute of Industrial Science , The University of Tokyo , 4-6-1 Komaba, Meguro-ku , Tokyo 153-8505 , Japan
| | - Kazuaki Kudo
- Institute of Industrial Science , The University of Tokyo , 4-6-1 Komaba, Meguro-ku , Tokyo 153-8505 , Japan
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43
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Akagawa K, Kudo K. Biomimetic iterative method for polyketide synthesis. Chem Commun (Camb) 2018; 53:8645-8648. [PMID: 28617504 DOI: 10.1039/c7cc04033d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
An iterative method for synthesizing polyketides was demonstrated, in which the chain elongation of a carboxylic acid was performed by decarboxylative dehydration condensation with a malonic acid half thioester. After transforming the resulting β-ketothioester into an appropriate form, the carboxylic acid functionality was regenerated for the next elongation step.
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Affiliation(s)
- Kengo Akagawa
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 1538505, Japan.
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44
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Ricucci A, Rodriguez J, Quintard A. Organo- and Copper-Multi-Catalyzed Pseudo Four-Component Access to gem
-Difluorohydrins. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701459] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Angela Ricucci
- CNRS, Centrale Marseille, iSm2; Aix Marseille Université; 13397 Marseille France
| | - Jean Rodriguez
- CNRS, Centrale Marseille, iSm2; Aix Marseille Université; 13397 Marseille France
| | - Adrien Quintard
- CNRS, Centrale Marseille, iSm2; Aix Marseille Université; 13397 Marseille France
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45
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Yan CX, Zhou PP, Yang FL, Wu RZ, Yang X, Yang F, Shao X. Chiral bisoxazoline catalyzed decarboxylative aldol reactions between β-carbonyl acids and trifluoroacetaldehyde hemiacetals as well as trifluoroacetaldehyde: the mechanism, the origin of enantioselectivity and the role of a catalyst. Org Chem Front 2018. [DOI: 10.1039/c8qo00578h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The role of a catalyst in the decarboxylative aldol reactions between β-carbonyl acids and trifluoroacetaldehyde hemiacetals as well as trifluoroacetaldehyde catalyzed by chiral bisoxazoline were unveiled theoretically.
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Affiliation(s)
- Chao-Xian Yan
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Pan-Pan Zhou
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Fang-Ling Yang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Rui-Zhi Wu
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Xing Yang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Fan Yang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Xiangfeng Shao
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
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46
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Yamashita Y, Yasukawa T, Yoo WJ, Kitanosono T, Kobayashi S. Catalytic enantioselective aldol reactions. Chem Soc Rev 2018; 47:4388-4480. [DOI: 10.1039/c7cs00824d] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recent developments in catalytic asymmetric aldol reactions have been summarized.
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Affiliation(s)
- Yasuhiro Yamashita
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Tomohiro Yasukawa
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Woo-Jin Yoo
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Taku Kitanosono
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Shū Kobayashi
- Department of Chemistry
- School of Science
- The University of Tokyo
- Bunkyo-ku
- Japan
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47
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Melnykov SV, Pataman AS, Dmytriv YV, Shishkina SV, Vovk MV, Sukach VA. Regioselective decarboxylative addition of malonic acid and its mono(thio)esters to 4-trifluoromethylpyrimidin-2(1 H)-ones. Beilstein J Org Chem 2017; 13:2617-2625. [PMID: 29259672 PMCID: PMC5727768 DOI: 10.3762/bjoc.13.259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/20/2017] [Indexed: 01/07/2023] Open
Abstract
Background: Due to the high reactivity towards various C-nucleophiles, trifluoromethylketimines are known to be useful reagents for the synthesis of α-trifluoromethylated amine derivatives. However, decarboxylative reactions with malonic acid and its mono(thio)esters have been poorly investigated so far despite the potential to become a convenient route to β-trifluoromethyl-β-amino acid derivatives and to their partially saturated heterocyclic analogues. Results: In this paper we show that 4-trifluoromethylpyrimidin-2(1H)-ones, unique heterocyclic ketimines, react with malonic acid under organic base catalysis to regioselectively provide either Michael- or Mannich-type decarboxylative addition products depending on solvent polarity. Malonic mono(thio)esters give exclusively Michael-type products. The two regioisomeric products can be converted into saturated (2-oxohexahydropyrimidin-4-yl)acetic acid derivatives by mild hydrogenation of the endocyclic C=C double bond in the presence of Pd/C as catalyst. The cis-stereoisomers selectively formed upon reduction of the Michael-type products were structurally determined by X-ray diffraction. As a result of this study, a number of novel acetic acid derivatives containing trifluoromethylated, partially or fully saturated 2-oxopyrimidine cores were prepared and characterized as promising building blocks. Conclusions: Regio- and stereoselective protocols have been developed for the synthesis of novel isomeric 4(6)-trifluoromethylated 1,2,3,4-tetrahydro- and perhydro-(2-oxopyrimidin-4-yl)acetic acid derivatives.
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Affiliation(s)
- Sergii V Melnykov
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska str., Kyiv 02660, Ukraine
| | | | - Yurii V Dmytriv
- Enamine LTD, 78 Chervonotkats'ka str., Kyiv 02094, Ukraine.,National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", 37 Peremohy ave., Kyiv 03056, Ukraine
| | - Svitlana V Shishkina
- STC ''Institute for Single Crystals'', National Academy of Sciences of Ukraine, 60 Nauky ave., Kharkiv 61001, Ukraine.,Department of Inorganic Chemisrtry, V.M. Karasin Kharkiv National University, 4 Svobody sq, Kharkiv 61122, Ukraine
| | - Mykhailo V Vovk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska str., Kyiv 02660, Ukraine
| | - Volodymyr A Sukach
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Murmanska str., Kyiv 02660, Ukraine
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48
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Gupta E, Kant R, Mohanan K. Decarbethoxylative Arylation Employing Arynes: A Metal-Free Pathway to Arylfluoroamides. Org Lett 2017; 19:6016-6019. [PMID: 29034681 DOI: 10.1021/acs.orglett.7b03072] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An efficient, metal-free decarbethoxylative arylation protocol for the synthesis of α-aryl-α-fluoroamides from fluoromalonamates, under ambient reaction conditions using aryne as an electrophilic arylating agent, is reported. This decarbethoxylative arylation proceeds under mild conditions and provides a practical and effective entry to a wide range of α-aryl-α-fluoroacetamides. Interestingly, the use of the tert-butyl ester of fluoromalonamate prevented the otherwise rapid decarboxylation step, affording the arylated fluoromalonamate in moderate yield.
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Affiliation(s)
| | | | - Kishor Mohanan
- Academy of Scientific and Innovative Research , New Delhi 110001, India
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49
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Endo Y, Takata S, Kumpuga BT, Itsuno S. Synthesis of Cinchona Alkaloid Sulfonamide Polymers as Enantioselective Catalysts for the Michael Addition Reaction of β-Ketoester and Nitrostyrene. ChemistrySelect 2017. [DOI: 10.1002/slct.201702010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuta Endo
- Department of Environmental and Life Sciences; Toyohashi University of Technology, Tempaku-cho; Toyohashi 441-8580 Japan
| | - Shohei Takata
- Department of Environmental and Life Sciences; Toyohashi University of Technology, Tempaku-cho; Toyohashi 441-8580 Japan
| | - Bahati Thom Kumpuga
- Department of Environmental and Life Sciences; Toyohashi University of Technology, Tempaku-cho; Toyohashi 441-8580 Japan
| | - Shinichi Itsuno
- Department of Environmental and Life Sciences; Toyohashi University of Technology, Tempaku-cho; Toyohashi 441-8580 Japan
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50
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Engl OD, Saadi J, Cosimi E, Wennemers H. Synthesis of Monothiomalonates - Versatile Thioester Enolate Equivalents for C-C Bond Formations. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Oliver D. Engl
- Laboratorium für Organische Chemie; D-CHAB; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Jakub Saadi
- Laboratorium für Organische Chemie; D-CHAB; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Elena Cosimi
- Laboratorium für Organische Chemie; D-CHAB; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Helma Wennemers
- Laboratorium für Organische Chemie; D-CHAB; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
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