1
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Liu K, Wang Z, Künzel AN, Layh M, Studer A. Regioselective Formal β-Allylation of Carbonyl Compounds Enabled by Cooperative Nickel and Photoredox Catalysis. Angew Chem Int Ed Engl 2023; 62:e202303473. [PMID: 37141023 DOI: 10.1002/anie.202303473] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/05/2023]
Abstract
The Tsuji-Trost reaction between carbonyl compounds and allylic precursors has been widely used in the synthesis of natural products and pharmaceutical compounds. As the α-C-H bond is far more acidic than the β-C-H bond, carbonyl compounds undergo highly regioselective allylation at the α-position and their β-allylation is therefore highly challenging. This innate α-reactivity conversely hampers diversity, especially if the corresponding β-allylation product is targeted. Herein, we present a formal intermolecular β-C-C bond formation reaction of a broad range of aldehydes and ketones with different allyl electrophiles through cooperative nickel and photoredox catalysis. β-Selectivity is achieved via initial transformation of the aldehydes and ketones to their corresponding silyl enol ethers. The overall transformation features mild conditions, excellent regioselectivity, wide functional group tolerance and high reaction efficiency. The introduced facile and regioselective β-allylation of carbonyl compounds proceeding through cooperative catalysis allows the preparation of valuable building blocks that are difficult to access from aldehydes and ketones using existing methodology.
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Affiliation(s)
- Kun Liu
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
| | - Zhe Wang
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
| | - Augustinus N Künzel
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
| | - Marcus Layh
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität, Corrensstraße 28/30, 48149, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149, Münster, Germany
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2
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Duran J, Mateos J, Moyano A, Companyó X. Catalytic asymmetric defluorinative allylation of silyl enol ethers. Chem Sci 2023; 14:7147-7153. [PMID: 37416711 PMCID: PMC10321495 DOI: 10.1039/d3sc01498c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/23/2023] [Indexed: 07/08/2023] Open
Abstract
The stereocontrolled installation of alkyl fragments at the alpha position of ketones is a fundamental yet unresolved transformation in organic chemistry. Herein we report a new catalytic methodology able to construct α-allyl ketones via defluorinative allylation of silyl enol ethers in a regio-, diastereo- and enantioselective manner. The protocol leverages the unique features of the fluorine atom to simultaneously act as a leaving group and to activate the fluorophilic nucleophile via a Si-F interaction. A series of spectroscopic, electroanalytic and kinetic experiments demonstrate the crucial interplay of the Si-F interaction for successful reactivity and selectivity. The generality of the transformation is demonstrated by synthesising a wide set of structurally diverse α-allylated ketones bearing two contiguous stereocenters. Remarkably, the catalytic protocol is amenable for the allylation of biologically significant natural products.
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Affiliation(s)
- Jordi Duran
- Section of Organic Chemistry, Department of Inorganic and Organic Chemistry, University of Barcelona Carrer Martí i Franquès 1 08028 Barcelona Spain https://companyolab.com
| | - Javier Mateos
- Section of Organic Chemistry, Department of Inorganic and Organic Chemistry, University of Barcelona Carrer Martí i Franquès 1 08028 Barcelona Spain https://companyolab.com
| | - Albert Moyano
- Section of Organic Chemistry, Department of Inorganic and Organic Chemistry, University of Barcelona Carrer Martí i Franquès 1 08028 Barcelona Spain https://companyolab.com
| | - Xavier Companyó
- Section of Organic Chemistry, Department of Inorganic and Organic Chemistry, University of Barcelona Carrer Martí i Franquès 1 08028 Barcelona Spain https://companyolab.com
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3
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Bitai J, Nimmo AJ, Slawin AMZ, Smith AD. Cooperative Palladium/Isothiourea Catalyzed Enantioselective Formal (3+2) Cycloaddition of Vinylcyclopropanes and α,β-Unsaturated Esters. Angew Chem Int Ed Engl 2022; 61:e202202621. [PMID: 35389553 PMCID: PMC9324207 DOI: 10.1002/anie.202202621] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 12/15/2022]
Abstract
A protocol for the enantioselective synthesis of substituted vinylcyclopentanes has been realised using cooperative palladium and isothiourea catalysis. Treatment of vinylcyclopropanes with Pd(PPh3 )4 generates a zwitterionic π-allyl palladium intermediate that intercepts a catalytically generated α,β-unsaturated acyl ammonium species prepared from the corresponding α,β-unsaturated para-nitrophenyl ester and the isothiourea (R)-BTM. Intermolecular formal (3+2) cycloaddition between these reactive intermediates generates functionalised cyclopentanes in generally good yields and excellent diastereo- and enantiocontrol (up to >95 : 5 dr, 97 : 3 er), with the use of LiCl as an additive proving essential for optimal stereocontrol. To the best of our knowledge a dual transition metal/organocatalytic process involving α,β-unsaturated acyl ammonium intermediates has not been demonstrated previously.
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Affiliation(s)
- Jacqueline Bitai
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Alastair J Nimmo
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Alexandra M Z Slawin
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
| | - Andrew D Smith
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK
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4
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Liu XJ, Zhang WY, Zheng C, You SL. Iridium-Catalyzed Asymmetric Allylic Substitution of Methyl Azaarenes. Angew Chem Int Ed Engl 2022; 61:e202200164. [PMID: 35238122 DOI: 10.1002/anie.202200164] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Indexed: 12/11/2022]
Abstract
Herein, an Ir-catalyzed asymmetric allylic substitution reaction of methyl azaarenes is described. Azaarenes such as (benzo)thiazole, oxazole, benzoimidazole, pyridine, and (iso)quinoline are all tolerated. The corresponding chiral azaarene derivatives are obtained in good yields with high enantioselectivity (up to 96 % yield and 99 % ee). The utilization of the Knochel reagent TMPZnBr⋅LiBr warrants the in situ formation of benzylic nucleophiles without additional activating reagents. 1 H NMR studies suggested a two-fold function of the Knochel reagent in this reaction. The synthetic utility of this method has been showcased by a concise enantioselective synthesis of an allosteric protein kinase modulator.
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Affiliation(s)
- Xi-Jia Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Wen-Yun Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
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5
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Zhang J, Yang WL, Zheng H, Wang Y, Deng WP. Regio- and Enantioselective γ-Allylic Alkylation of In Situ-Generated Free Dienolates via Scandium/Iridium Dual Catalysis. Angew Chem Int Ed Engl 2022; 61:e202117079. [PMID: 35212099 DOI: 10.1002/anie.202117079] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Indexed: 12/28/2022]
Abstract
An unprecedented asymmetric γ-allylic alkylation of free dienolates via Sc/Ir dual catalysis is reported, which affords a range of synthetically versatile γ-allylic crotonaldehydes in high efficiency with excellent chemo-, regio-, and enantioselectivities. The dienolates bearing no essential auxiliary groups were generated in situ by scandium triflate-mediated Meinwald rearrangement of vinyloxiranes atom-economically. With the assistance of computational density functional theory calculations, a Sc/Ir bimetallic catalytic cycle was proposed to illustrate the reaction mechanism.
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Affiliation(s)
- Jian Zhang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Hanliang Zheng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua, 321004, P. R. China
| | - Yi Wang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Wei-Ping Deng
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.,Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua, 321004, P. R. China
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6
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Liu XJ, Zhang WY, Zheng C, You SL. Iridium‐Catalyzed Asymmetric Allylic Substitution of Methyl Azaarenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xi-Jia Liu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Organometallic Chemistry CHINA
| | - Wen-Yun Zhang
- Shanghai Institute of Organic Chemistry State Key Laboratory of Organometallic Chemistry CHINA
| | - Chao Zheng
- Shanghai Institute of Organic Chemistry State Key Laboratory of Organometallic Chemistry CHINA
| | - Shu-Li You
- Shanghai Inst Org Chem State Key Lab Organometallic Chem 345 Lingling Lu 200032 Shanghai CHINA
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7
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Zhang J, Yang WL, Zheng H, Wang Y, Deng WP. Regio‐ and Enantioselective γ‐Allylic Alkylation of In‐Situ‐Generated Free Dienolates via Scandium/Iridium Dual Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jian Zhang
- East China University of Science and Technology School of Pharmacy Meilong Road 130 200237 Shanghai CHINA
| | - Wu-Lin Yang
- East China University of Science and Technology School of Pharmacy Meilong Road 130 200237 Shanghai CHINA
| | - Hanliang Zheng
- Zhejiang Normal University Department of Chemistry CHINA
| | - Yi Wang
- East China University of Science and Technology School of Pharmacy Meilong Road 130 200237 Shanghai CHINA
| | - Wei-Ping Deng
- East China University of Science and Technology School of Pharmacy 130 Meilong Road 200237 Shanghai CHINA
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8
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Tom MJ, Evans PA. Regioselective and Stereospecific Rhodium-Catalyzed Allylic Cyanomethylation with an Acetonitrile Equivalent: Construction of Acyclic β-Quaternary Stereogenic Nitriles. J Am Chem Soc 2020; 142:11957-11961. [PMID: 32486634 DOI: 10.1021/jacs.0c02316] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A highly regioselective and stereospecific rhodium-catalyzed cyanomethylation of tertiary allylic carbonates for the construction of acyclic β-quaternary stereogenic nitriles is described. This protocol represents the first example of a metal-catalyzed allylic substitution reaction using a triorganosilyl-stabilized acetonitrile anion, which permits access to several carbonyl derivatives that are challenging to prepare using conventional pronucleophiles. The synthetic utility of the stereospecific cyanomethylation is further exemplified through the construction of an intermediate utilized in the total synthesis of both (-)-epilaurene and (-)-α-cuparenone.
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Affiliation(s)
- Mai-Jan Tom
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston ON K7L 3N6, Canada
| | - P Andrew Evans
- Department of Chemistry, Queen's University, 90 Bader Lane, Kingston ON K7L 3N6, Canada.,Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, Hunan, P. R. of China
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9
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Sarkar R, Mukherjee S. Enantioselective Direct Vinylogous Allylic Alkylation of 4-Methylquinolones under Iridium Catalysis. Org Lett 2019; 21:5315-5320. [PMID: 31247781 DOI: 10.1021/acs.orglett.9b01934] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The first enantioselective vinylogous allylic alkylation of 4-methylquinolones has been developed. This iridium-catalyzed reaction introduces an allyl group at the γ-position of 4-methyl-2-quinolones with exclusive branched selectivity and an excellent level of enantioselectivity. This in turn allows for the enantioselective synthesis of γ-allylquinolines and related nitrogenous heterocycles. This is the first application of 4-methylquinolones in an enantioselective transformation.
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Affiliation(s)
- Rahul Sarkar
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560012 , India
| | - Santanu Mukherjee
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560012 , India
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10
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Yue BB, Deng Y, Zheng Y, Wei K, Yang YR. Iridium-Catalyzed Enantioselective Allylation of Aryl Enamides and Enecarbamates. Org Lett 2019; 21:2449-2452. [PMID: 30896182 DOI: 10.1021/acs.orglett.9b00764] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Aromatic enamide and enecarbamate as a novel type of nucleophile in the asymmetric allylation of branched, racemic allylic alcohols to give homoallylic ketones has been described. Enabled by Carreira's chiral Ir (P, olefin) complex, the reactions proceed in good yields with excellent enantioselectivities.
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Affiliation(s)
- Bei-Bei Yue
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yi Deng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China
| | - Yu Zheng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Kun Wei
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China
| | - Yu-Rong Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany , Chinese Academy of Sciences , Kunming 650201 , China
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11
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Wang Y, Zhang WY, You SL. Ketones and Aldehydes as O-Nucleophiles in Iridium-Catalyzed Intramolecular Asymmetric Allylic Substitution Reaction. J Am Chem Soc 2019; 141:2228-2232. [DOI: 10.1021/jacs.8b13182] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ye Wang
- State Key Laboratory
of Organometallic Chemistry, Center for Excellence in Molecular Synthesis,
Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, 345 Lingling Lu, Shanghai 200032, China
| | - Wen-Yun Zhang
- State Key Laboratory
of Organometallic Chemistry, Center for Excellence in Molecular Synthesis,
Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- State Key Laboratory
of Organometallic Chemistry, Center for Excellence in Molecular Synthesis,
Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, 345 Lingling Lu, Shanghai 200032, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 30072, China
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12
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Cheng Q, Tu HF, Zheng C, Qu JP, Helmchen G, You SL. Iridium-Catalyzed Asymmetric Allylic Substitution Reactions. Chem Rev 2018; 119:1855-1969. [PMID: 30582688 DOI: 10.1021/acs.chemrev.8b00506] [Citation(s) in RCA: 442] [Impact Index Per Article: 73.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this review, we summarize the origin and advancements of iridium-catalyzed asymmetric allylic substitution reactions during the past two decades. Since the first report in 1997, Ir-catalyzed asymmetric allylic substitution reactions have attracted intense attention due to their exceptionally high regio- and enantioselectivities. Ir-catalyzed asymmetric allylic substitution reactions have been significantly developed in recent years in many respects, including ligand development, mechanistic understanding, substrate scope, and application in the synthesis of complex functional molecules. In this review, an explicit outline of ligands, mechanism, scope of nucleophiles, and applications is presented.
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Affiliation(s)
- Qiang Cheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Hang-Fei Tu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Jian-Ping Qu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , China
| | - Günter Helmchen
- Organisch-Chemisches Institut der Ruprecht-Karls , Universität Heidelberg , Im Neuenheimer Feld 270 , D-69120 Heidelberg , Germany
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
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13
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Yao J, Yin L, Shen Y, Lu T, Hayashi T, Dou X. Catalytic Asymmetric Conjugate Arylation of γ,δ-Unsaturated β-Dicarbonyl Compounds. Org Lett 2018; 20:6882-6885. [DOI: 10.1021/acs.orglett.8b03021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Yao
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Long Yin
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Yue Shen
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Tao Lu
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
| | - Tamio Hayashi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Xiaowei Dou
- Department of Organic Chemistry, School of Science, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211198, China
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14
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Sarkar R, Mitra S, Mukherjee S. Iridium-catalyzed enantioselective direct vinylogous allylic alkylation of coumarins. Chem Sci 2018; 9:5767-5772. [PMID: 30079186 PMCID: PMC6050583 DOI: 10.1039/c8sc02041h] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/03/2018] [Indexed: 12/27/2022] Open
Abstract
The first iridium-catalyzed enantioselective vinylogous allylic alkylation of coumarins is presented. Using easily accessible linear allylic carbonates as the allylic electrophile, this reaction installs unfunctionalized allyl groups at the γ-position of 4-methylcoumarins in an exclusively branched-selective manner generally in high yields with an excellent level of enantioselectivity (up to 99 : 1 er).
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Affiliation(s)
- Rahul Sarkar
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
| | - Sankash Mitra
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
| | - Santanu Mukherjee
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
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15
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Sempere Y, Carreira EM. Trimethyl Orthoacetate and Ethylene Glycol Mono-Vinyl Ether as Enolate Surrogates in Enantioselective Iridium-Catalyzed Allylation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803558] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yeshua Sempere
- Laboratorium für Organische Chemie, HCI H335; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie, HCI H335; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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16
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Sempere Y, Carreira EM. Trimethyl Orthoacetate and Ethylene Glycol Mono-Vinyl Ether as Enolate Surrogates in Enantioselective Iridium-Catalyzed Allylation. Angew Chem Int Ed Engl 2018; 57:7654-7658. [DOI: 10.1002/anie.201803558] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Yeshua Sempere
- Laboratorium für Organische Chemie, HCI H335; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische Chemie, HCI H335; Eidgenössische Technische Hochschule Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
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17
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Wang Z, He Z, Zhang L, Huang Y. Iridium-Catalyzed Aerobic α,β-Dehydrogenation of γ,δ-Unsaturated Amides and Acids: Activation of Both α- and β-C-H bonds through an Allyl-Iridium Intermediate. J Am Chem Soc 2018; 140:735-740. [PMID: 29251918 DOI: 10.1021/jacs.7b11351] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Direct aerobic α,β-dehydrogenation of γ,δ-unsaturated amides and acids using a simple iridium/copper relay catalysis system is described. We developed a new strategy that overcomes the challenging issue associated with the low α-acidity of amides and acids. Instead of α-C-H metalation, this reaction proceeds by β-C-H activation, which results in enhanced α-acidity. Conjugated dienamides and dienoic acids were synthesized in excellent yield with this reaction, which uses a simple reaction protocol. Mechanistic experiments suggest a catalyst resting state mechanism in which both α-C-H and β-C-H cleavage is accelerated.
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Affiliation(s)
- Zhen Wang
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School , Shenzhen 518055, China
| | - Zhiqi He
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School , Shenzhen 518055, China
| | - Linrui Zhang
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School , Shenzhen 518055, China
| | - Yong Huang
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School , Shenzhen 518055, China
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18
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Shi CY, Xiao JZ, Yin L. Iridium-catalyzed direct asymmetric vinylogous allylic alkylation. Chem Commun (Camb) 2018; 54:11957-11960. [DOI: 10.1039/c8cc07249c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A catalytic asymmetric vinylogous allylic alkylation of α,β-unsaturated lactones with an iridium catalyst was achieved with excellent regio- and enantioselectivity.
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Affiliation(s)
- Chang-Yun Shi
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Jun-Zhao Xiao
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
| | - Liang Yin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Center for Excellence in Molecular Synthesis
- Shanghai Institute of Organic Chemistry
- University of Chinese Academy of Sciences
- Chinese Academy of Sciences
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19
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Abstract
An overview of the highlights in total synthesis of natural products using iridium as a catalyst is given.
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Affiliation(s)
- Changchun Yuan
- School of Chemical Engineering and Technology
- North University of China
- Taiyuan 030051
- PR China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
- PR China
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20
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Rieckhoff S, Meisner J, Kästner J, Frey W, Peters R. Double Regioselective Asymmetric C-Allylation of Isoxazolinones: Iridium-Catalyzed N-Allylation Followed by an Aza-Cope Rearrangement. Angew Chem Int Ed Engl 2017; 57:1404-1408. [DOI: 10.1002/anie.201710940] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Stefan Rieckhoff
- Universität Stuttgart; Institut für Organische Chemie; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Jan Meisner
- Universität Stuttgart; Institut für Theoretische Chemie; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Johannes Kästner
- Universität Stuttgart; Institut für Theoretische Chemie; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Universität Stuttgart; Institut für Organische Chemie; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - René Peters
- Universität Stuttgart; Institut für Organische Chemie; Pfaffenwaldring 55 70569 Stuttgart Germany
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21
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Rieckhoff S, Meisner J, Kästner J, Frey W, Peters R. Doppelt regioselektive asymmetrische C-Allylierung von Isoxazolinonen: Iridium-katalysierte N-Allylierung mit nachfolgender Aza-Cope-Umlagerung. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201710940] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Stefan Rieckhoff
- Universität Stuttgart; Institut für Organische Chemie; Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Jan Meisner
- Universität Stuttgart; Institut für Theoretische Chemie; Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Johannes Kästner
- Universität Stuttgart; Institut für Theoretische Chemie; Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Wolfgang Frey
- Universität Stuttgart; Institut für Organische Chemie; Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - René Peters
- Universität Stuttgart; Institut für Organische Chemie; Pfaffenwaldring 55 70569 Stuttgart Deutschland
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22
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Bora PP, Sun GJ, Zheng WF, Kang Q. Rh/Lewis Acid Catalyzed Regio-, Diastereo- and Enantioselective Addition of 2-Acyl Imidazoles with Allenes. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201700596] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Pranjal P. Bora
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology; Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences; 155 Yangqiao Road West, Fuzhou Fujian 350002 China
| | - Gui-Jun Sun
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology; Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences; 155 Yangqiao Road West, Fuzhou Fujian 350002 China
| | - Wei-Feng Zheng
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology; Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences; 155 Yangqiao Road West, Fuzhou Fujian 350002 China
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology; Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences; 155 Yangqiao Road West, Fuzhou Fujian 350002 China
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23
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Zhao ZL, Gu Q, Wu XY, You SL. Anilines as C-Nucleophiles in Ir-Catalyzed Intramolecular Asymmetric Allylic Substitution Reactions. Chem Asian J 2017; 12:2680-2683. [DOI: 10.1002/asia.201701192] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Zheng-Le Zhao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P.R. China
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P.R. China
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 P.R. China
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; Shanghai 200237 P.R. China
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24
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Kayal S, Mukherjee S. Catalytic Enantioselective Vinylogous Allylic Alkylation of Coumarins. Org Lett 2017; 19:4944-4947. [DOI: 10.1021/acs.orglett.7b02421] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Satavisha Kayal
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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25
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Pérez JM, Maquilón C, Ramón DJ, Baeza A. Hexafluoroisopropanol-Promoted Metal-Free Allylation of Silyl Enol Ethers with Allylic Alcohols. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700320] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Juana M. Pérez
- Institute of Organic Synthesis; University of Alicante; Ctra. San Vicente s/n Alicante 03080 Spain
| | - Cristina Maquilón
- Institute of Organic Synthesis; University of Alicante; Ctra. San Vicente s/n Alicante 03080 Spain
| | - Diego J. Ramón
- Institute of Organic Synthesis; University of Alicante; Ctra. San Vicente s/n Alicante 03080 Spain
| | - Alejandro Baeza
- Institute of Organic Synthesis; University of Alicante; Ctra. San Vicente s/n Alicante 03080 Spain
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26
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Jiang X, Hartwig JF. Iridium-Catalyzed Enantioselective Allylic Substitution of Aliphatic Esters with Silyl Ketene Acetals as the Ester Enolates. Angew Chem Int Ed Engl 2017; 56:8887-8891. [PMID: 28597600 DOI: 10.1002/anie.201704354] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Indexed: 02/03/2023]
Abstract
Enantioselective allylic substitution with enolates derived from aliphatic esters under mild conditions remains challenging. Herein we report iridium-catalyzed enantioselective allylation reactions of silyl ketene acetals, the silicon enolates of esters, to form products containing a quaternary carbon atom at the nucleophile moiety and a tertiary carbon atom at the electrophile moiety. Under relatively neutral conditions, the allylated aliphatic esters were obtained with excellent regioselectivity and enantioselectivity. These products were readily converted into primary alcohols, carboxylic acids, amides, isocyanates, and carbamates, as well as tetrahydrofuran and γ-butyrolactone derivatives, without erosion of enantiomeric purity.
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Affiliation(s)
- Xingyu Jiang
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
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27
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Jiang X, Hartwig JF. Iridium-Catalyzed Enantioselective Allylic Substitution of Aliphatic Esters with Silyl Ketene Acetals as the Ester Enolates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704354] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xingyu Jiang
- Department of Chemistry; University of California; Berkeley CA 94720 USA
| | - John F. Hartwig
- Department of Chemistry; University of California; Berkeley CA 94720 USA
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28
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Enantioselective Iridium-Catalyzed Allylic Substitution with 2-Methylpyridines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700433] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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29
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Liu XJ, You SL. Enantioselective Iridium-Catalyzed Allylic Substitution with 2-Methylpyridines. Angew Chem Int Ed Engl 2017; 56:4002-4005. [PMID: 28266102 DOI: 10.1002/anie.201700433] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Indexed: 12/22/2022]
Abstract
An enantioselective iridium-catalyzed allylic substitution with a set of highly unstabilized nucleophiles generated in situ from 2-methylpyridines is described. Enantioenriched 2-substituted pyridines, which are frequently encountered in natural products and pharmaceuticals, could be easily constructed by this simple method in good yields and excellent enantioselectivity. The synthetic utility of the pyridine products is demonstrated through the synthesis of a key intermediate of a reported Na+ /H+ exchanger inhibitor and the total synthesis of (-)-lycopladine A.
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Affiliation(s)
- Xi-Jia Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China
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30
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Li C, Breit B. Rhodium-Catalyzed Dynamic Kinetic Asymmetric Allylation of Phenols and 2-Hydroxypyridines. Chemistry 2016; 22:14655-63. [DOI: 10.1002/chem.201603532] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Changkun Li
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstraße 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstraße 21 79104 Freiburg im Breisgau Germany
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31
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Chen M, Hartwig JF. Iridium-Catalyzed Regio- and Enantioselective Allylic Substitution of Trisubstituted Allylic Electrophiles. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607053] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ming Chen
- Departments of Chemistry; University of California; Berkeley CA 94720 USA
| | - John F. Hartwig
- Departments of Chemistry; University of California; Berkeley CA 94720 USA
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32
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Chen M, Hartwig JF. Iridium-Catalyzed Regio- and Enantioselective Allylic Substitution of Trisubstituted Allylic Electrophiles. Angew Chem Int Ed Engl 2016; 55:11651-5. [PMID: 27531137 DOI: 10.1002/anie.201607053] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Indexed: 11/09/2022]
Abstract
The first Ir-catalyzed enantioselective allylation of trisubstituted allylic electrophiles has been developed. Through modification of the leaving group of allylic electrophiles, we found that trisubstituted allylic phosphates are suitable electrophiles for asymmetric allylation. The reaction of allylic phosphates with enol silanes derived from dioxinones gave allylated products in good yields with high enantioselectivities.
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Affiliation(s)
- Ming Chen
- Departments of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Departments of Chemistry, University of California, Berkeley, CA, 94720, USA.
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33
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Affiliation(s)
- Wenzhen Fu
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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34
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Liu WB, Okamoto N, Alexy EJ, Hong AY, Tran K, Stoltz BM. Enantioselective γ-Alkylation of α,β-Unsaturated Malonates and Ketoesters by a Sequential Ir-Catalyzed Asymmetric Allylic Alkylation/Cope Rearrangement. J Am Chem Soc 2016; 138:5234-7. [PMID: 27052660 DOI: 10.1021/jacs.6b02153] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A catalytic, enantioselective γ-alkylation of α,β-unsaturated malonates and ketoesters is reported. This strategy entails a highly regio- and enantioselective iridium-catalyzed α-alkylation of an extended enolate, and a subsequent translocation of chirality to the γ-position via a Cope rearrangement.
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Affiliation(s)
- Wen-Bo Liu
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Noriko Okamoto
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Eric J Alexy
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Allen Y Hong
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Kristy Tran
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Brian M Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
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35
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Loh CCJ, Schmid M, Peters B, Fang X, Lautens M. Exploiting Distal Reactivity of Coumarins: A Rhodium-Catalyzed Vinylogous Asymmetric Ring-Opening Reaction. Angew Chem Int Ed Engl 2016; 55:4600-4. [DOI: 10.1002/anie.201600654] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Charles C. J. Loh
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Matthias Schmid
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Brendan Peters
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Xiang Fang
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Laboratory for Advanced Material and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Mark Lautens
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
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36
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Loh CCJ, Schmid M, Peters B, Fang X, Lautens M. Exploiting Distal Reactivity of Coumarins: A Rhodium-Catalyzed Vinylogous Asymmetric Ring-Opening Reaction. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600654] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Charles C. J. Loh
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Matthias Schmid
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Brendan Peters
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Xiang Fang
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Laboratory for Advanced Material and Institute of Fine Chemicals; School of Chemistry and Molecular Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Mark Lautens
- Department of Chemistry; Davenport Chemical Laboratories, University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
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37
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Affiliation(s)
- Liang Hong
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 China
| | - Wangsheng Sun
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Dongxu Yang
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Guofeng Li
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Rui Wang
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 China
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
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38
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Kanbayashi N, Yamazawa A, Takii K, Okamura TA, Onitsuka K. Planar-Chiral Cyclopentadienyl-Ruthenium-Catalyzed Regio- and Enantioselective Asymmetric Allylic Alkylation of Silyl Enolates under Unusually Mild Conditions. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500970] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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Li C, Grugel CP, Breit B. Rhodium-catalyzed chemo- and regioselective decarboxylative addition of β-ketoacids to alkynes. Chem Commun (Camb) 2016; 52:5840-3. [DOI: 10.1039/c6cc02272c] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A highly efficient rhodium-catalyzed chemo- and regioselective addition of β-ketoacids to alkynes is reported.
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Affiliation(s)
- Changkun Li
- Institut für Organische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg im Breisgau
- Germany
| | - Christian P. Grugel
- Institut für Organische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg im Breisgau
- Germany
| | - Bernhard Breit
- Institut für Organische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg im Breisgau
- Germany
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40
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Gattu R, Basha RS, Bagdi PR, Khan AT. One-pot three-component regioselective synthesis of C1-functionalised 3-arylbenzo[f]quinoline. RSC Adv 2016. [DOI: 10.1039/c5ra23413a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient method for regioselective synthesis of C1-functionalised 3-arylbenzo[f]quinoline has been demonstrated using β-ketoester, 2-naphthylamine and aromatic aldehyde by employing camphorsulfonic acid as the catalyst in acetonitrile at 70 °C.
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Affiliation(s)
- Radhakrishna Gattu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - R. Sidick Basha
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Prasanta Ray Bagdi
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Abu T. Khan
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
- Vice-Chancellor
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41
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Affiliation(s)
- Ryo Takeuchi
- Department of Chemistry and Biological Science, Aoyama Gakuin University
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42
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Nakamura T, Kubota K, Ieki T, Hosokawa S. Stereoselective Alkylation of the Vinylketene Silyl N,O-Acetal and Its Application to the Synthesis of Mycocerosic Acid. Org Lett 2015; 18:132-5. [PMID: 26673532 DOI: 10.1021/acs.orglett.5b03422] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stereoselective alkylation of the vinylketene silyl N,O-acetal possessing a chiral auxiliary has been achieved by using activated alkyl halides including allyl iodides, benzyl iodides, and propargyl iodide with Ag(I) ion in the presence of BF3·OEt2. The reaction proceeded to give reduced polyketides in high stereoselectivity. The synthesis of mycocerosic acid, a component of the cell envelope of Mycobacterium tuberculosis, has been accomplished by this methodology. During the synthetic studies, 2-methylbenzimidazole was found to be a bulky proton source which worked in the presence of liquid ammonia.
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Affiliation(s)
- Tatsuya Nakamura
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Kei Kubota
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Takanori Ieki
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Seijiro Hosokawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
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43
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Bhaskararao B, Sunoj RB. Origin of Stereodivergence in Cooperative Asymmetric Catalysis with Simultaneous Involvement of Two Chiral Catalysts. J Am Chem Soc 2015; 137:15712-22. [DOI: 10.1021/jacs.5b05902] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Bangaru Bhaskararao
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Raghavan B. Sunoj
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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44
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Chen M, Hartwig JF. Iridium-Catalyzed Enantioselective Allylic Substitution of Enol Silanes from Vinylogous Esters and Amides. J Am Chem Soc 2015; 137:13972-9. [PMID: 26441002 PMCID: PMC5342901 DOI: 10.1021/jacs.5b09980] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The enol silanes of vinylogous esters and amides are classic dienes for Diels-Alder reactions. Here, we report their reactivity as nucleophiles in Ir-catalyzed, enantioselective allylic substitution reactions. A variety of allylic carbonates react with these nucleophiles to give allylated products in good yields with high enantioselectivities and excellent branched-to-linear ratios. These reactions occur with KF or alkoxide as the additive, but mechanistic studies suggest that these additives do not activate the enol silanes. Instead, they serve as bases to promote the cyclometalation to generate the active Ir catalyst. The carbonate anion, which was generated from the oxidative addition of the allylic carbonate, likely activates the enol silanes to trigger their activity as nucleophiles for reactions with the allyliridium electrophile. The synthetic utility of this method was illustrated by the synthesis of the anti-muscarinic drug, fesoterodine.
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Affiliation(s)
- Ming Chen
- Department of Chemistry, University of California , Berkeley, California 94720, United States
| | - John F Hartwig
- Department of Chemistry, University of California , Berkeley, California 94720, United States
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45
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Naesborg L, Halskov KS, Tur F, Mønsted SMN, Jørgensen KA. Asymmetric γ-Allylation of α,β-Unsaturated Aldehydes by Combined Organocatalysis and Transition-Metal Catalysis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504749] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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46
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Naesborg L, Halskov KS, Tur F, Mønsted SMN, Jørgensen KA. Asymmetric γ-Allylation of α,β-Unsaturated Aldehydes by Combined Organocatalysis and Transition-Metal Catalysis. Angew Chem Int Ed Engl 2015; 54:10193-7. [DOI: 10.1002/anie.201504749] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Indexed: 11/07/2022]
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Hamilton JY, Sarlah D, Carreira EM. Iridium-Catalyzed Enantioselective Allylic Alkylation with Functionalized Organozinc Bromides. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501851] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hamilton JY, Sarlah D, Carreira EM. Iridium-Catalyzed Enantioselective Allylic Alkylation with Functionalized Organozinc Bromides. Angew Chem Int Ed Engl 2015; 54:7644-7. [DOI: 10.1002/anie.201501851] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Indexed: 11/05/2022]
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Zhou S, Chen H, Luo Y, Zhang W, Li A. Asymmetric Total Synthesis of Mycoleptodiscin A. Angew Chem Int Ed Engl 2015; 54:6878-82. [DOI: 10.1002/anie.201501021] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/05/2015] [Indexed: 01/11/2023]
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