1
|
Wang Y, Wang Y, Qu J, Yang T, Zhang Y, Yuan C, Guo H, Wang C. BF 3·OEt 2 Catalyzed Cascade [4 + 2] Benzannulation of Vinyloxiranes with Coumarins to Construct Benzocoumarin Derivatives. J Org Chem 2024; 89:9462-9472. [PMID: 38869450 DOI: 10.1021/acs.joc.4c00742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
A BF3·OEt2-catalyzed cascade cyclization reaction of vinyloxirane with coumarin is described, affording the benzocoumarin derivatives with moderate to excellent yields (72-92%). The reaction demonstrates exceptional substrate tolerance and has been extensively explored for its potential in drug development, including scale-up experiments, functional group transformations, and screening of the products for anticancer activity. Moreover, the reaction mechanism has been rigorously validated through intermediate trapping and control experiments. Additionally, this reaction represents the uncommon nonmetal catalyzed intermolecular cyclization of vinyloxiranes.
Collapse
Affiliation(s)
- Yafei Wang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Yujia Wang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Jiaxin Qu
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Tongtong Yang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Yining Zhang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| | - Chunhao Yuan
- School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong 271016, PR China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China
| | - Chang Wang
- School of Pharmaceutical Sciences & Institute of Materia Medica, Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, PR China
| |
Collapse
|
2
|
Zheng Y, Fang X, Deng WH, Zhao B, Liao RZ, Xie Y. Direct activation of alcohols via perrhenate ester formation for an intramolecular dehydrative Friedel–Crafts reaction. Org Chem Front 2022. [DOI: 10.1039/d2qo00229a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general and highly efficient intramolecular dehydrative Friedel–Crafts reactions via Re2O7 mediated hydroxyl group activation is described for the syntheses of tetrahydronaphthalene, tetrahydroquinoline, tetrahydroisoquinoline, chromane, and isochromane derivatives.
Collapse
Affiliation(s)
- Yuzhu Zheng
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xiong Fang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Wen-Hao Deng
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Bin Zhao
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Rong-Zhen Liao
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Youwei Xie
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| |
Collapse
|
3
|
Kundu S, Munda M, Nandi R, Bisai A. Pd(0)-Catalyzed Deacylative Allylations (DaA) Strategy and Application in the Total Synthesis of Alkaloids. CHEM REC 2021; 21:3818-3838. [PMID: 34796643 DOI: 10.1002/tcr.202100267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 10/29/2021] [Accepted: 10/29/2021] [Indexed: 11/12/2022]
Abstract
Natural product synthesis has been the prime focus for the development of new carbon-carbon bond forming transformations. In particular, the construction of molecules with all-carbon quaternary centers remain one of the most facinating targets. In this regard, transition-metal catalyzed processes have gained imporatnce owing to their mild nature. Towards this, Pd(0)-catalyzed decarboxylative allylations (DcA) is worth mentioning and has emerged as a convenient method for synthesis of molecules even in their enantioenriched form. However, in order to have a flexible approach that facilitate rapid production of derivatives by utilizing commercially available allyl alcohols, the concept of Pd(0)-catalyzed deacylative allylations (DaA) methodology gains popularity. In these reactions, the transfer of an acyl group has a functional role in activating the allylic alcohol (proelectrophile) toward reaction with Pd(0)-catalysts. We present here an Account on newly conceptualized deacylative allylations (DaA) methodology and its applications in the synthesis of various intermediates and building blocks. Further, its potential in the total synthesis of naturally occurring alkaloids have been summarized in this personal account.
Collapse
Affiliation(s)
- Sourav Kundu
- Department of Chemistry, Indian Institution of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, MP, India
| | - Mintu Munda
- Department of Chemistry, Indian Institution of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, MP, India
| | - Rhituparna Nandi
- Department of Chemistry, Indian Institution of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462 066, MP, India
| | - Alakesh Bisai
- Department of Chemical Sciences, Indian Institution of Science Education and Research Kolkata Mohanpur Campus, Kalyani, Nadia, 741 246, WB, India
| |
Collapse
|
4
|
Hikawa H, Nakayama T, Takahashi M, Kikkawa S, Azumaya I. Direct Use of Benzylic Alcohols for Multicomponent Synthesis of 2‐Aryl Quinazolinones Utilizing the π‐Benzylpalladium(II) System in Water. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hidemasa Hikawa
- Faculty of Pharmaceutical Sciences Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Taku Nakayama
- Faculty of Pharmaceutical Sciences Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Makiko Takahashi
- Faculty of Pharmaceutical Sciences Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Shoko Kikkawa
- Faculty of Pharmaceutical Sciences Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| | - Isao Azumaya
- Faculty of Pharmaceutical Sciences Toho University 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
| |
Collapse
|
5
|
Zhu X, Li R, Yao H, Lin A. Palladium-Catalyzed Allenamide Carbopalladation/Allylation with Active Methine Compounds. Org Lett 2021; 23:4630-4634. [PMID: 34048265 DOI: 10.1021/acs.orglett.1c01369] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium-catalyzed allenamide carbopalladation/allylation with active methine compounds has been developed. Various indoles and isoquinolinones bearing a quaternary carbon center were achieved with good efficiency, a broad substrate scope and good functional group tolerance. This reaction underwent cascade oxidative addition, carbopalladation, and allylic alkylation, and two new C-C bonds were formed in one pot.
Collapse
Affiliation(s)
- Xiaoyi Zhu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ruibo Li
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| |
Collapse
|
6
|
Zhang S, Feng X, Bao M. Palladium-Catalyzed Three-Component Coupling Reaction via Benzylpalladium Intermediate. CHEM REC 2021; 21:3559-3572. [PMID: 34028180 DOI: 10.1002/tcr.202100112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/26/2021] [Accepted: 05/03/2021] [Indexed: 12/20/2022]
Abstract
Transition-metal catalyzed multi-component reactions have captured the attention of researchers in organic synthesis and drug synthesis due to their advantages of simple operation, easy availability of raw materials and without separation of intermediates. Among the multi-component reactions, the three-component processes have been developed into effective organic procedures. This personal account reviews our and other group's studies on the development of three-component coupling reaction for the rapid construction of two new chemical bonds simultaneously via benzylpalladium intermediates. Catalyst-switched three-component reactions of benzyl halides, activated olefins, and allyltributylstannane were successfully conducted to produce the corresponding benzylallylation products. Activation and conversion of carbon monoxide and carbon dioxide via π-benzylpalladium intermediates provide access to a wide range of unsaturated ketones and esters with excellent functional group tolerance. Meanwhile, other methods to produce benzylpalladium intermediates, including Heck insertion of alkenes into arylpalladium complexes, the oxidative addition of benzyl carbonate to palladium complexes and palladium-carbene migratory insertion, were also highlighted.
Collapse
Affiliation(s)
- Sheng Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, China
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, China
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116023, China
| |
Collapse
|
7
|
|
8
|
Onodera G, Kumagae H, Nakamura D, Hayasaki T, Fukuda T, Kimura M. Direct benzylation of amines with benzylic alcohols catalyzed by palladium/phosphine-borane catalyst system. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
9
|
Cartwright KC, Tunge JA. Organophotoredox/palladium dual catalytic decarboxylative Csp 3-Csp 3 coupling of carboxylic acids and π-electrophiles. Chem Sci 2020; 11:8167-8175. [PMID: 34094175 PMCID: PMC8163213 DOI: 10.1039/d0sc02609c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A dual catalytic decarboxylative allylation and benzylation method for the construction of new C(sp3)-C(sp3) bonds between readily available carboxylic acids and functionally diverse carbonate electrophiles has been developed. The new process is mild, operationally simple, and has greatly improved upon the efficiency and generality of previous methodology. In addition, new insights into the reaction mechanism have been realized and provide further understanding of the harnessed reactivity.
Collapse
Affiliation(s)
- Kaitie C Cartwright
- Department of Chemistry, The University of Kansas 1567 Irving Rd. Lawrence KS 66045 USA
| | - Jon A Tunge
- Department of Chemistry, The University of Kansas 1567 Irving Rd. Lawrence KS 66045 USA
| |
Collapse
|
10
|
Ren W, Jin M, Zuo QM, Yang SD. Allylation of β-amino phosphonic acid precursor via palladium-NHC catalyzed allylic C–H activation. Org Chem Front 2020. [DOI: 10.1039/c9qo01089k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A Pd(ii)/N-heterocyclic carbene (NHC) catalyzed allylic C–H alkylation of allylbenzene with α-cyano-phosphate ester has been achieved under mild reaction conditions with the highest regioselectivity and stereoselectivity.
Collapse
Affiliation(s)
- Wei Ren
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Ming Jin
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Qian-Ming Zuo
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shang-Dong Yang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
| |
Collapse
|
11
|
Kuwano R, Yokogi M, Sakai K, Masaoka S, Miura T, Won S. Room-Temperature Benzylic Alkylation of Benzylic Carbonates: Improvement of Palladium Catalyst and Mechanistic Study. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ryoichi Kuwano
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Center for Molecular Systems (CMS), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masashi Yokogi
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ken Sakai
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Center for Molecular Systems (CMS), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shigeyuki Masaoka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takashi Miura
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Sungyong Won
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| |
Collapse
|
12
|
|
13
|
Kumar N, Gavit VR, Maity A, Bisai A. Pd(0)-Catalyzed Chemoselective Deacylative Alkylations (DaA) of N-Acyl 2-Oxindoles: Total Syntheses of Pyrrolidino[2,3- b]indoline Alkaloids, (±)-Deoxyeseroline, and (±)-Esermethole. J Org Chem 2018; 83:10709-10735. [PMID: 30058340 DOI: 10.1021/acs.joc.8b01101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report an efficient Pd(0)-catalyzed deacylative allylation of N-acyl 3-substituted 2-oxindoles via the coupling of in situ generated nucleophiles (3 and 4) with allyl electrophiles for the synthesis of a variety of 2-oxindoles with C3-quaternary centers. Gratifyingly, this alkylation process is found to be highly chemoselective in nature, where a C-C bond formation is completely predominant over a C-N bond formation. A variety of key intermediates were synthesized utilizing an aforementioned methodology.
Collapse
Affiliation(s)
- Nivesh Kumar
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal , Madhya Pradesh 462 066 , India
| | - Vipin R Gavit
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal , Madhya Pradesh 462 066 , India
| | - Arindam Maity
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal , Madhya Pradesh 462 066 , India
| | - Alakesh Bisai
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal , Madhya Pradesh 462 066 , India
| |
Collapse
|
14
|
Allegre KM, Brennan N, Tunge JA. Synthesis of Vinyl Cyclopropanes via Anion Relay Cyclization. Org Lett 2018; 20:4191-4194. [PMID: 29956937 DOI: 10.1021/acs.orglett.8b01566] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A method where an allyl alcohol is formed from a Tsuji-Trost allylation between a vinyl epoxide and an acyl containing nucleophile is described. Subsequently, a retro-Claisen condensation is utilized as a means of through-space anion relay. The anion relay results in the formation of a reactive carbanion and simultaneously activates an allylic alcohol toward intramolecular Tsuji-Trost cyclopropanation. Hence, in one pot, Tsuji-Trost allylation, retro-Claisen activation, and Tsuji-Trost cyclopropanation are combined to access synthetically useful vinyl cyclopropanes from vinyl epoxides using a mild and operationally simple procedure.
Collapse
Affiliation(s)
- Kevin M Allegre
- Department of Chemistry , The University of Kansas , 2010 Malott Hall, 1251 Wescoe Hall Drive , Lawrence , Kansas 66045 , United States
| | - Nathan Brennan
- Department of Chemistry , The University of Kansas , 2010 Malott Hall, 1251 Wescoe Hall Drive , Lawrence , Kansas 66045 , United States
| | - Jon A Tunge
- Department of Chemistry , The University of Kansas , 2010 Malott Hall, 1251 Wescoe Hall Drive , Lawrence , Kansas 66045 , United States
| |
Collapse
|
15
|
Ortega-Martínez A, Molina C, Moreno-Cabrerizo C, Sansano JM, Nájera C. Deacylative Reactions: Synthetic Applications. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800063] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Aitor Ortega-Martínez
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
- Instituto de Síntesis Orgánica; Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
| | - Cynthia Molina
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
- Instituto de Síntesis Orgánica; Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
| | - Cristina Moreno-Cabrerizo
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
- Instituto de Síntesis Orgánica; Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
| | - José M. Sansano
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
- Instituto de Síntesis Orgánica; Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
| | - Carmen Nájera
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Ciencias; Universidad de Alicante; 03080- Alicante Spain
| |
Collapse
|
16
|
Abe T, Suzuki T, Anada M, Matsunaga S, Yamada K. 2-Hydroxyindoline-3-triethylammonium Bromide: A Reagent for Formal C3-Electrophilic Reactions of Indoles. Org Lett 2017; 19:4275-4278. [DOI: 10.1021/acs.orglett.7b01940] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Takumi Abe
- Faculty
of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 0610293, Japan
| | - Takuro Suzuki
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 0600812, Japan
| | - Masahiro Anada
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 0600812, Japan
| | - Shigeki Matsunaga
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 0600812, Japan
| | - Koji Yamada
- Faculty
of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 0610293, Japan
| |
Collapse
|
17
|
Kumar N, Das MK, Ghosh S, Bisai A. Development of catalytic deacylative alkylations (DaA) of 3-acyl-2-oxindoles: total synthesis of meso-chimonanthine and related alkaloids. Chem Commun (Camb) 2017; 53:2170-2173. [PMID: 28144659 DOI: 10.1039/c6cc10228j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present an effective deacylative alkylation strategy for the construction of a variety of 2-oxindoles bearing an all-carbon quaternary center at the pseudobenzylic position. A wide variety of products with quaternary centers could be accessed by employing simple Pd(0) catalysis under mild reaction conditions. Importantly, the same strategy works equally well for the dimeric 2-oxindole system, furnishing products with a vicinal quaternary center in favour of meso-isomer as the major product. Eventual application to the total syntheses of meso-chimonanthine and meso-folicanthine very well demonstrates the synthetic potential of this strategy.
Collapse
Affiliation(s)
- Nivesh Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal - 462 066, Madhya Pradesh, India.
| | - Mrinal Kanti Das
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal - 462 066, Madhya Pradesh, India.
| | - Santanu Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal - 462 066, Madhya Pradesh, India.
| | - Alakesh Bisai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal - 462 066, Madhya Pradesh, India.
| |
Collapse
|
18
|
Locascio TM, Tunge JA. Palladium-Catalyzed Regiodivergent Substitution of Propargylic Carbonates. Chemistry 2016; 22:18140-18146. [DOI: 10.1002/chem.201603481] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Indexed: 01/27/2023]
Affiliation(s)
- Theresa M. Locascio
- Department of Chemistry; The University of Kansas, 2010 Malott Hall; 1251 Wescoe Hall Drive Lawrence KS 66045 USA
| | - Jon A. Tunge
- Department of Chemistry; The University of Kansas, 2010 Malott Hall; 1251 Wescoe Hall Drive Lawrence KS 66045 USA
| |
Collapse
|
19
|
Le Bras J, Muzart J. Production of Csp3-Csp3Bonds through Palladium-Catalyzed Tsuji-Trost-Type Reactions of (Hetero)Benzylic Substrates. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600094] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
20
|
Zhu Y, Zhang L, Luo S. Asymmetric Retro-Claisen Reaction by Chiral Primary Amine Catalysis. J Am Chem Soc 2016; 138:3978-81. [DOI: 10.1021/jacs.6b00627] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yunbo Zhu
- Beijing
National Laboratory for Molecule Sciences (BNLMS), CAS Key Laboratory
for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
| | - Long Zhang
- Beijing
National Laboratory for Molecule Sciences (BNLMS), CAS Key Laboratory
for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
| | - Sanzhong Luo
- Beijing
National Laboratory for Molecule Sciences (BNLMS), CAS Key Laboratory
for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
| |
Collapse
|
21
|
Zhou Y, Rao C, Mai S, Song Q. Substituent-Controlled Chemoselective Cleavage of C═C or Csp2–C(CO) Bond in α,β-Unsaturated Carbonyl Compounds with H-Phosphonates Leading to β-Ketophosphonates. J Org Chem 2016; 81:2027-34. [DOI: 10.1021/acs.joc.5b02887] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yao Zhou
- Institute of Next Generation Matter Transformation, College of Chemical Engineering, College of Materials Science & Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China
| | - Changqing Rao
- Institute of Next Generation Matter Transformation, College of Chemical Engineering, College of Materials Science & Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China
| | - Shaoyu Mai
- Institute of Next Generation Matter Transformation, College of Chemical Engineering, College of Materials Science & Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Chemical Engineering, College of Materials Science & Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China
| |
Collapse
|