1
|
Teng Y, Yu X, Shang D, Wang Z, Rao W. Brønsted Acid-Catalyzed Dehydrative Nazarov-type Cyclization of CF 3-Substituted 3-Indolylallyl Alcohols: Divergent Synthesis of 1-Trifluoromethylated Cyclopenta[ b]indoles. J Org Chem 2024. [PMID: 38175524 DOI: 10.1021/acs.joc.3c02331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
An expedient and efficient synthetic method for the divergent synthesis of 1-trifluoromethylated cyclopenta[b]indoles that relies on Brønsted acid-catalyzed dehydrative Nazarov-type cyclization of CF3-substituted 3-indolylallyl alcohols is described. Two classes of 1-trifluoromethylated cyclopenta[b]indoles can be easily accessed simply by changing the NH-protecting group of indoles. With arylsulfonyl protected 3-indolylallyl alcohols as starting materials, the reaction provided the arylsulfonyl protected 1-trifluoromethylated cyclopenta[b]indoles in good to excellent yields, whereas pivaloyl (Piv) protected substrates led to the formation of NH-free 1-trifluoromethylated cyclolopenta[b]indoles with another alkenyl isomer. This protocol features tunable chemoselectivity, operational simplicity, excellent functional group compatibility, and mild metal-free conditions.
Collapse
Affiliation(s)
- Yuling Teng
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xiangdong Yu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Dandan Shang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zeliang Wang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Weidong Rao
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forsest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| |
Collapse
|
2
|
Bhattacharjee P, Sarma B, Bora U. Molecular-iodine catalyzed selective construction of cyclopenta[ b]indoles from indoles and acetone: a green gateway to indole-fused cycles. Org Biomol Chem 2023; 21:9275-9285. [PMID: 37974448 DOI: 10.1039/d3ob01561k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Molecular-iodine catalyzed access to an important class of bio-relevant indole derivatives, cyclopenta[b]indoles, has been achieved via a cascade addition/intramolecular cyclization reaction of indoles and acetone. Explorations of diverse substitution patterns revealed an essential substrate-control in the reaction. The high-density electronic core of indole is pivotal in favouring the formation of indolyl-cyclopenta[b]indole derivatives; in contrast, the electron deficiency of the core hindered the cyclization process, directing the formation of bis(indolyl)propanes. Investigations on the mechanistic pathway revealed that bis(indolyl)alkanes were the intermediates for the addition-cyclization process. This simple experimental method provides sustainable synthetic access to cyclopentannulated indoles.
Collapse
Affiliation(s)
- Prantika Bhattacharjee
- Department of Chemical Sciences, Tezpur University, Napaam-784028, Assam, India
- Department of Chemistry, Bahona College, Jorhat-785101, Assam, India.
| | - Bipul Sarma
- Department of Chemical Sciences, Tezpur University, Napaam-784028, Assam, India
| | - Utpal Bora
- Department of Chemical Sciences, Tezpur University, Napaam-784028, Assam, India
| |
Collapse
|
3
|
Mandal D, Kumar A, Patil NT. Gold catalysis in organic synthesis: fifteen years of research in India. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2022. [DOI: 10.1007/s43538-022-00106-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
4
|
liu Y, Cao M, Zhang S, Wang Z, Dai X, Jiang X, Dong Y, Fu J. Synthesis of C3-functionalized indole derivatives via Brønsted acid-catalyzed regioselective arylation of 2-indolylmethanols with guaiazulene. Org Biomol Chem 2022; 20:1510-1517. [DOI: 10.1039/d1ob02384e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first Brønsted acid catalyzed method for the construction of guaiazulenyl C3-functionalized indole derivatives was established. The reactions proceeded smoothly at ambient temperature by used (±)-10-camphorsulfonic acid (CSA) as catalyst,...
Collapse
|
5
|
Kumar K, Kumar P, Singh B, Yadav S, Mishra UK, Ansari AJ, Ramasastry SSV. Hypothesis-Driven Palladium-Catalyzed Transformations for the Construction of New Molecular Architectures. CHEMICAL RECORD (NEW YORK, N.Y.) 2021; 21:3470-3482. [PMID: 33971073 DOI: 10.1002/tcr.202100095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/20/2021] [Accepted: 04/20/2021] [Indexed: 11/09/2022]
Abstract
The development of new synthetic protocols to access diverse molecular scaffolds from readily available starting compounds is of significance in both academia and industry. Towards this, the catalysis by transition metals has been employed as a powerful tool to access molecules with broad structural and functional diversity. An overview of the recent literature manifested the tremendous potential of transition metal-catalyzed processes in advancing organic synthesis in a new direction. This account compiles new conceptual advancements in the palladium-catalyzed Alder-ene type cycloisomerization reactions, C-H functionalizations, and one-pot multicatalytic processes, which have become essential tools to access new classes of molecules.
Collapse
Affiliation(s)
- Ketan Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Prashant Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Bara Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Sonu Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Uttam K Mishra
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Arshad J Ansari
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| |
Collapse
|
6
|
Chen L, Liu X, Zhang J, Duan L, Wen Z, Ni H. Relay Cu(I)/Brønsted Base Catalysis for
Phospha
‐Michael Addition/5‐
exo
‐
dig
Cyclization/Isomerization of
in
situ
Formed
aza
‐Alkynyl
o‐
quinone methides with P(O)−H compounds to C3‐Phosphorylated Indoles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Xiao‐Yan Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Jing Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Li Duan
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Zhong Wen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics School of Pharmacy Chengdu University 2025 Chengluo Avenue Chengdu 610016 People's Republic of China
| | - Hai‐Liang Ni
- College of Chemistry and Materials Science Sichuan Normal University 5 Jing An Road Chengdu 610066 People's Republic of China
| |
Collapse
|
7
|
Baruah B, Deb ML. Catalyst-free and additive-free reactions enabling C-C bond formation: a journey towards a sustainable future. Org Biomol Chem 2021; 19:1191-1229. [PMID: 33480947 DOI: 10.1039/d0ob02149k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review focuses on the catalyst- and additive-free C-C bond forming reactions reported mostly from the year 2005 to date. C-C bond forming reactions are highly important as large and complex organic molecules can be derived from simpler ones via these reactions. On the other hand, catalyst- and additive-free reactions are economical, environmentally friendly and less sensitive to air/moisture, allow easy separation of products and are operationally simple. Hence, a large number of research articles have been published in this area. Though a few reviews are available on the catalyst-free organic reactions, most of them were published a few years ago. The current review excludes catalysts as well as additives and is specific to only C-C bond formation. Besides many organic name reactions, catalyst/additive-free C-H functionalizations, coupling reactions and UV-visible-light-promoted reactions are also discussed. Undoubtedly, the contents of this review will motivate readers to do more novel work in this area which will accelerate the journey towards a sustainable future.
Collapse
Affiliation(s)
- Biswajita Baruah
- Department of Chemistry, Pandu College, Guwahati-12, Assam, India
| | | |
Collapse
|
8
|
Liu X, Liu Y, Chen L. Tandem Annulations of Propargylic Alcohols to Indole Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000930] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao‐Yan Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University 168 Hua Guan Road Chengdu 610052 People's Republic of China
| | - Yun‐Lin Liu
- School of Chemistry and Chemical Engineering Guangzhou University 230 Wai Huan Xi Road Guangzhou 510006 People's Republic of China
| | - Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province Sichuan Industrial Institute of Antibiotics Chengdu University 168 Hua Guan Road Chengdu 610052 People's Republic of China
| |
Collapse
|
9
|
Nifant'ev IE, Ivchenko PV. Synthesis of Heteroarene‐Fused Cyclopentadienes and Related Compounds Suitable for Metallocene Preparation. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ilya E. Nifant'ev
- A.V. Topchiev Institute of Petrochemical Synthesis RAS Leninsky pr. 22 119991 Moscow Russian Federation
- Department of Chemistry M.V. Lomonosov Moscow University Leninskie gory 1–3 119991 Moscow Russian Federation
| | - Pavel V. Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis RAS Leninsky pr. 22 119991 Moscow Russian Federation
- Department of Chemistry M.V. Lomonosov Moscow University Leninskie gory 1–3 119991 Moscow Russian Federation
| |
Collapse
|
10
|
Ueda JI, Enomoto Y, Seki M, Konishi T, Ogasawara M, Yoshida K. Oxidative Cyclization of o-(1-Hydroxy-2-alkynyl)- N-tosylanilides for the Synthesis of 4-Quinolones. J Org Chem 2020; 85:6420-6428. [PMID: 32315174 DOI: 10.1021/acs.joc.0c00245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The treatment of easily accessible o-(1-hydroxy-2-alkynyl)-N-tosylanilides 1 with excess manganese(IV) oxide in the presence of substoichiometric tetrabutylammonium iodide (TBAI) in chloroform (or in the absence of TBAI in dimethylformamide, DMF) promoted a sequential oxidation/intramolecular hydroamination to give 4-quinolones 3 and/or (Z)-2-alkylidene-3-oxindoles (Z)-4 in good yields. Possibly, MnO2 played dual roles as an oxidant and as a Lewis acidic activator of intermediary ynones 2. The product distributions between 3 and (Z)-4 could be controlled by the choice of solvents.
Collapse
Affiliation(s)
- Jun-Ichi Ueda
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Yuuki Enomoto
- Department of Natural Science, Graduate School of Science and Technology and Research Cluster on "Innovative Chemical Sensing", Tokushima University, Tokushima 770-8506, Japan
| | - Mizuki Seki
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Takuma Konishi
- Department of Natural Science, Graduate School of Science and Technology and Research Cluster on "Innovative Chemical Sensing", Tokushima University, Tokushima 770-8506, Japan
| | - Masamichi Ogasawara
- Department of Natural Science, Graduate School of Science and Technology and Research Cluster on "Innovative Chemical Sensing", Tokushima University, Tokushima 770-8506, Japan
| | - Kazuhiro Yoshida
- Department of Chemistry, Graduate School of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| |
Collapse
|
11
|
Singh B, Bankar SK, Kumar K, Ramasastry SSV. Palladium-catalysed 5- endo-trig allylic (hetero)arylation. Chem Sci 2020; 11:4948-4953. [PMID: 34122951 PMCID: PMC8159216 DOI: 10.1039/d0sc01932a] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 08/14/2020] [Accepted: 04/18/2020] [Indexed: 12/16/2022] Open
Abstract
A palladium-catalysed intramolecular allylic (hetero)arylation strategy for the synthesis of fused cyclopentenes incorporated with all-carbon quaternary and spiro centres is described. The method is straightforward, shows broad scope, proceeds in synthetically useful yields, and provides a rare means to construct complex cyclopentanoids. The reaction is believed to involve a kinetically unfavourable 5-endo-trig carbocyclisation of the tethered (π-allyl)palladium system. Further, this method was successfully applied as the key step in the total synthesis of diterpene natural products taiwaniaquinone H and dichroanone.
Collapse
Affiliation(s)
- Bara Singh
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Sector 81, Manauli PO, S. A. S. Nagar Punjab 140306 India
| | - Siddheshwar K Bankar
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Sector 81, Manauli PO, S. A. S. Nagar Punjab 140306 India
| | - Ketan Kumar
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Sector 81, Manauli PO, S. A. S. Nagar Punjab 140306 India
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Sector 81, Manauli PO, S. A. S. Nagar Punjab 140306 India
| |
Collapse
|
12
|
Amuthavalli A, Prakash B, Thirugnanasampandan R, Gogulramnath M, Bhuvaneswari G, Velmurugan R. Synthesis, molecular docking, antibacterial, antioxidant, and cytotoxicity activities of novel pyrido-cyclopenta[b]indole analogs. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1733610] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- A. Amuthavalli
- Department of Chemistry, Kongunadu Arts and Science College, Coimbatore, Tamil Nadu, India
| | - B. Prakash
- Department of Chemistry, Kongunadu Arts and Science College, Coimbatore, Tamil Nadu, India
| | | | - M. Gogulramnath
- Department of Biotechnology, Kongunadu Arts and Science College, Coimbatore, Tamil Nadu, India
| | - G. Bhuvaneswari
- Department of Biotechnology, Kongunadu Arts and Science College, Coimbatore, Tamil Nadu, India
| | - R. Velmurugan
- Department of Chemistry, Kongunadu Arts and Science College, Coimbatore, Tamil Nadu, India
| |
Collapse
|
13
|
Gujjarappa R, Vodnala N, Malakar CC. Decarboxylative cyclization of amino acids towards the Regioselective synthesis of 2,4-diarylpyridines via relay Fe(III)/In(III)-catalysis. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151495] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
14
|
Liu XY, Zou YX, Ni HL, Zhang J, Dong HB, Chen L. Copper-catalyzed tandem phosphorylative allenylation/cyclization of 1-(o-aminophenyl)prop-2-ynols with the P(O)–H species: access to C2-phosphorylmethylindoles. Org Chem Front 2020. [DOI: 10.1039/d0qo00159g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A novel method to synthesize C2-phosphorylmethylindoles via the carbocation formation initiated tandem phosphorylative allenylation/cyclization of 1-(o-aminophenyl)prop-2-ynols with the P(O)–H species has been developed.
Collapse
Affiliation(s)
- Xiao-Yan Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Yun-Xiang Zou
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Hai-Liang Ni
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu 610066
- P. R. China
| | - Jing Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Hong-Bo Dong
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| | - Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- P. R. China
| |
Collapse
|
15
|
Selvaraj K, Debnath S, Swamy KCK. Reaction of Indole Carboxylic Acid/Amide with Propargyl Alcohols: [4 + 3]-Annulation, Unexpected 3- to 2- Carboxylate/Amide Migration, and Decarboxylative Cyclization. Org Lett 2019; 21:5447-5451. [DOI: 10.1021/acs.orglett.9b01686] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Karuppu Selvaraj
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - Shubham Debnath
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| |
Collapse
|
16
|
Capretz Agy A, Rodrigues MT, Zeoly LA, Simoni DA, Coelho F. Palladium-Mediated Oxidative Annulation of δ-Indolyl-α,β-Unsaturated Compounds toward the Synthesis of Cyclopenta[b]indoles and Heterogeneous Hydrogenation To Access Fused Indolines. J Org Chem 2019; 84:5564-5581. [DOI: 10.1021/acs.joc.9b00505] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
17
|
Gandhi S, Baire B. Unusual Formation of Cyclopenta[b]indoles from 3-Indolylmethanols and Alkynes. J Org Chem 2019; 84:3904-3918. [DOI: 10.1021/acs.joc.8b03027] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Soniya Gandhi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamilnadu, India
| | - Beeraiah Baire
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamilnadu, India
| |
Collapse
|
18
|
Song W, Li M, He J, Li J, Dong K, Zheng Y. Copper-catalyzed tandem annulation/enol nucleophilic addition to access multisubstituted indoles. Org Biomol Chem 2019; 17:2663-2669. [PMID: 30766987 DOI: 10.1039/c9ob00181f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A method to access various multisubstituted indoles from propargylic alcohols and readily available enol nucleophiles by copper-catalyzed tandem annulation/enol nucleophilic addition has been developed. Compared to the expensive metal catalysts such as platinum, gold, silver, and palladium used previously, the most economical copper(i) catalyst could achieve this reaction efficiently. The fused heterocyclic compounds, pyrrolo[1,2-a] indoles, could be afforded by further transformation of the products. The allyl cation intermediate may be involved in the mechanism.
Collapse
Affiliation(s)
- Wangze Song
- State Key Laboratory of Fine Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, 116024, P. R. China.
| | | | | | | | | | | |
Collapse
|
19
|
Becica J, Dobereiner GE. The roles of Lewis acidic additives in organotransition metal catalysis. Org Biomol Chem 2019; 17:2055-2069. [DOI: 10.1039/c8ob02856g] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We present recent advances in prominent organotransition metal-catalysed reactions in which Lewis acid cocatalysts are employed to increase catalyst activity or selectivity. The roles of Lewis acids are discussed.
Collapse
Affiliation(s)
- Joseph Becica
- Department of Chemistry
- Temple University
- Philadelphia
- USA
| | | |
Collapse
|
20
|
Samanta S, Hajra A. Ruthenium-catalyzed tandem annulation/arylation for the synthesis of unsymmetrical bis(heteroaryl)methanes. Org Biomol Chem 2018; 16:8390-8394. [PMID: 30209462 DOI: 10.1039/c8ob01892h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A new Ru-catalyzed tandem furan annulation/arylation strategy has been developed to afford unsymmetrical bis(heteroaryl)methanes by a reaction between propargyl amines and indoles. A series of bis(heteroaryl)methanes containing furan and indole as well as indole and imidazopyridine moieties have been synthesized in high yields. The reaction possibly proceeds through furan annulation followed by nucleophilic addition of indole.
Collapse
Affiliation(s)
- Sadhanendu Samanta
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235 West Bengal, India.
| | | |
Collapse
|
21
|
Rinaldi A, Petrović M, Magnolfi S, Scarpi D, Occhiato EG. Pentannulation Reaction by Tandem Gold(I)-Catalyzed Propargyl Claisen Rearrangement/Nazarov Cyclization of Enynyl Vinyl Ethers. Org Lett 2018; 20:4713-4717. [DOI: 10.1021/acs.orglett.8b02141] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antonia Rinaldi
- Department of Chemistry “U. Schiff”, University of Florence, Via della Lastruccia 13, 50019, Sesto Fiorentino (FI), Florence, Italy
| | - Martina Petrović
- Department of Chemistry “U. Schiff”, University of Florence, Via della Lastruccia 13, 50019, Sesto Fiorentino (FI), Florence, Italy
| | - Stefano Magnolfi
- Department of Chemistry “U. Schiff”, University of Florence, Via della Lastruccia 13, 50019, Sesto Fiorentino (FI), Florence, Italy
| | - Dina Scarpi
- Department of Chemistry “U. Schiff”, University of Florence, Via della Lastruccia 13, 50019, Sesto Fiorentino (FI), Florence, Italy
| | - Ernesto G. Occhiato
- Department of Chemistry “U. Schiff”, University of Florence, Via della Lastruccia 13, 50019, Sesto Fiorentino (FI), Florence, Italy
| |
Collapse
|
22
|
Satpathi B, Mondal A, Ramasastry SSV. Organocatalytic Strategies for the Synthesis of Cyclopenta-Fused Arenes and Heteroarenes. Chem Asian J 2018; 13:1642-1653. [PMID: 29673100 DOI: 10.1002/asia.201800389] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/19/2018] [Indexed: 12/22/2022]
Abstract
Cyclopentanoids are omnipresent in natural products and pharmaceutically relevant compounds. Among them, cyclopenta-fused arenes and heteroarenes possess impressive biological properties and play significant role in materials science. Consequently, several notable methods have been developed for their synthesis over the years. In this review, we mainly described metal-free and organocatalytic approaches that led to the construction of pentannulated arenes and heteroarenes.
Collapse
Affiliation(s)
- Bishnupada Satpathi
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Atanu Mondal
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| |
Collapse
|
23
|
Vivekanand T, Satpathi B, Bankar SK, Ramasastry SSV. Recent metal-catalysed approaches for the synthesis of cyclopenta[ b]indoles. RSC Adv 2018; 8:18576-18588. [PMID: 35541103 PMCID: PMC9080641 DOI: 10.1039/c8ra03480j] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 05/14/2018] [Indexed: 12/15/2022] Open
Abstract
The cyclopenta[b]indole scaffold is ubiquitously present in several bioactive natural products and pharmaceutically interesting compounds. Of the numerous methods known for the synthesis of cyclopenta-fused indoles, this review highlights only the metal-catalysed approaches reported from the year 2015 onwards. This review encompasses our own efforts leading to the synthesis of cyclopentannulated indoles, in addition to the seminal contributions of several other researchers.
Collapse
Affiliation(s)
- Thavaraj Vivekanand
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, S. A. S. Nagar Manauli PO Punjab 140306 India http://14.139.227.202/faculty/sastry/
| | - Bishnupada Satpathi
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, S. A. S. Nagar Manauli PO Punjab 140306 India http://14.139.227.202/faculty/sastry/
| | - Siddheshwar K Bankar
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, S. A. S. Nagar Manauli PO Punjab 140306 India http://14.139.227.202/faculty/sastry/
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, S. A. S. Nagar Manauli PO Punjab 140306 India http://14.139.227.202/faculty/sastry/
| |
Collapse
|
24
|
Kaufmann J, Jäckel E, Haak E. Rutheniumkatalysierte Kaskadenanellierung von Indol mit Propargylalkoholen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801846] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Julia Kaufmann
- Institut für Chemie; Otto von Guericke Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Deutschland
| | - Elisabeth Jäckel
- Institut für Chemie; Otto von Guericke Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Deutschland
| | - Edgar Haak
- Institut für Chemie; Otto von Guericke Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Deutschland
| |
Collapse
|
25
|
Kaufmann J, Jäckel E, Haak E. Ruthenium-Catalyzed Cascade Annulation of Indole with Propargyl Alcohols. Angew Chem Int Ed Engl 2018; 57:5908-5911. [DOI: 10.1002/anie.201801846] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Indexed: 01/22/2023]
Affiliation(s)
- Julia Kaufmann
- Institute of Chemistry; Otto von Guericke University Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Elisabeth Jäckel
- Institute of Chemistry; Otto von Guericke University Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Edgar Haak
- Institute of Chemistry; Otto von Guericke University Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| |
Collapse
|
26
|
Bankar SK, Singh B, Tung P, Ramasastry SSV. Palladium-Catalyzed Intramolecular Trost-Oppolzer-Type Alder-Ene Reaction of Dienyl Acetates to Cyclopentadienes. Angew Chem Int Ed Engl 2018; 57:1678-1682. [PMID: 29219255 DOI: 10.1002/anie.201711797] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 01/17/2023]
Abstract
A new approach to the synthesis of highly substituted cyclopentadienes, indenes, and cyclopentene-fused heteroarenes by means of the Pd-catalyzed Trost-Oppolzer-type intramolecular Alder-ene reaction of 2,4-pentadienyl acetates is described. This unprecedented transformation combines the electrophilic features of the Tsuji-Trost reaction with the nucleophilic features of the Alder-ene reaction. The overall outcome can be perceived as a hitherto unknown "acid-free" iso-Nazarov-type cyclization. The versatility of this strategy was further demonstrated by the formal synthesis of paucifloral F, a resveratrol-based natural product.
Collapse
Affiliation(s)
- Siddheshwar K Bankar
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Bara Singh
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - Pinku Tung
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO, Punjab, 140306, India
| |
Collapse
|
27
|
Bankar SK, Singh B, Tung P, Ramasastry SSV. Palladium-Catalyzed Intramolecular Trost-Oppolzer-Type Alder-Ene Reaction of Dienyl Acetates to Cyclopentadienes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711797] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Siddheshwar K. Bankar
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO Punjab 140306 India
| | - Bara Singh
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO Punjab 140306 India
| | - Pinku Tung
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO Punjab 140306 India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manauli PO Punjab 140306 India
| |
Collapse
|
28
|
Abe T, Morita T, Yamada K. Radical Cyclizations of Aryl Bromides for Synthesis of Cyclopenta[b]indoles from Vince Lactam. HETEROCYCLES 2018. [DOI: 10.3987/com-17-s(t)15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
29
|
Chen L, Zou YX, Fang XY, Wu J, Sun XH. Brønsted acid-catalysed regiodivergent phosphorylation of 2-indolylmethanols to synthesize benzylic site or C3-phosphorylated indole derivatives. Org Biomol Chem 2018; 16:7417-7424. [DOI: 10.1039/c8ob02033g] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A Brønsted acid catalyzed highly regiodivergent phosphorylation of 2-indolylmethanols with diarylphosphine oxides has been established, which provides an efficient protocol for accessing benzylic site or C3-phosphorylated indole derivatives with structural diversity.
Collapse
Affiliation(s)
- Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics Chengdu University
- Chengdu 610052
- P. R. China
| | - Yun-Xiang Zou
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics Chengdu University
- Chengdu 610052
- P. R. China
| | - Xin-Yue Fang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics Chengdu University
- Chengdu 610052
- P. R. China
| | - Jie Wu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics Chengdu University
- Chengdu 610052
- P. R. China
| | - Xiao-Hua Sun
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province
- Sichuan Industrial Institute of Antibiotics Chengdu University
- Chengdu 610052
- P. R. China
| |
Collapse
|
30
|
Thikekar TU, Sun CM. Palladium-Catalyzed Regioselective Synthesis of 1,2-Fused Indole-Diazepines via
[5+2] Annulation of o
-Indoloanilines with Alkynes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700741] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tushar Ulhas Thikekar
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 300-10 Taiwan
| | - Chung-Ming Sun
- Department of Applied Chemistry; National Chiao Tung University; Hsinchu 300-10 Taiwan
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; Kaohsiung 807-08 Taiwan
| |
Collapse
|
31
|
Gharpure SJ, Shelke YG. Lewis Acid Mediated Cascade Friedel–Craft/Alkyne Indol-2-yl Cation Cyclization/Vinyl Cation Trapping for the Synthesis of N-Fused Indole Derivatives. Org Lett 2017; 19:5406-5409. [DOI: 10.1021/acs.orglett.7b02680] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India
| | - Yogesh G. Shelke
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India
| |
Collapse
|
32
|
Mishra UK, Yadav S, Ramasastry SSV. One-Pot Multicatalytic Approaches for the Synthesis of Cyclohepta[b]indoles, Indolotropones, and Tetrahydrocarbazoles. J Org Chem 2017; 82:6729-6737. [DOI: 10.1021/acs.joc.7b00865] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Uttam K. Mishra
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector
81, S A S Nagar, Manauli PO, Punjab 140 306, India
| | - Sonu Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector
81, S A S Nagar, Manauli PO, Punjab 140 306, India
| | - S. S. V. Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector
81, S A S Nagar, Manauli PO, Punjab 140 306, India
| |
Collapse
|
33
|
Chen J, Han X, Lu X. Atom-Economic Synthesis of Pentaleno[2,1-b]indoles via Tandem Cyclization of Alkynones Initiated by Aminopalladation. J Org Chem 2017; 82:1977-1985. [DOI: 10.1021/acs.joc.6b02817] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junjie Chen
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xiuling Han
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xiyan Lu
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| |
Collapse
|
34
|
Mao XF, Zhu XP, Li DY, Jiang LL, Liu PN. Cascade reaction of alkynols with 1-(2-aminophenyl)prop-2-ynols to form a fused 5,5,6-tricyclic system: formation of four bonds in a single reaction. Chem Commun (Camb) 2017; 53:8608-8611. [DOI: 10.1039/c7cc04126h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A novel cascade reaction of internal alkynols with 1-(2-aminophenyl)prop-2-ynols has been developed to form a new N,O-containing fused 5,5,6-tricyclic skeleton.
Collapse
Affiliation(s)
- Xiao-Feng Mao
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Xiao-Ping Zhu
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Deng-Yuan Li
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Liang-Liang Jiang
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Pei-Nian Liu
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| |
Collapse
|
35
|
The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2015. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
36
|
Santos MS, Fernandes DC, Rodrigues MT, Regiani T, Andricopulo AD, Ruiz ALTG, Vendramini-Costa DB, de Carvalho JE, Eberlin MN, Coelho F. Diastereoselective Synthesis of Biologically Active Cyclopenta[b]indoles. J Org Chem 2016; 81:6626-39. [DOI: 10.1021/acs.joc.6b01270] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Daniara C. Fernandes
- Instituto Federal de Educação, Ciência e Tecnologia de São Paulo, Campus Matão, 15991-502 Matão, SP, Brazil
| | | | | | - Adriano D. Andricopulo
- Laboratório
de Química Medicinal e Computacional, Instituto de Física da USP − São Carlos, 13563-120 São
Carlos, SP, Brazil
| | - Ana Lúcia T. G. Ruiz
- Centro Pluridisciplinar de Pesquisas Químicas, Biológicas
e Agrícolas, UNICAMP, PO Box 6171, 13083-970 Paulínia, SP, Brazil
| | - Débora B. Vendramini-Costa
- Centro Pluridisciplinar de Pesquisas Químicas, Biológicas
e Agrícolas, UNICAMP, PO Box 6171, 13083-970 Paulínia, SP, Brazil
| | - João E. de Carvalho
- Centro Pluridisciplinar de Pesquisas Químicas, Biológicas
e Agrícolas, UNICAMP, PO Box 6171, 13083-970 Paulínia, SP, Brazil
| | | | | |
Collapse
|
37
|
Scarpi D, Petrović M, Fiser B, Gómez-Bengoa E, Occhiato EG. Construction of Cyclopenta[b]indol-1-ones by a Tandem Gold(I)-Catalyzed Rearrangement/Nazarov Reaction and Application to the Synthesis of Bruceolline H. Org Lett 2016; 18:3922-5. [DOI: 10.1021/acs.orglett.6b01990] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Dina Scarpi
- Dipartimento
di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino (FI), Italy
| | - Martina Petrović
- Dipartimento
di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino (FI), Italy
| | - Béla Fiser
- Departamento
de Química Orgánica I, Universidad del País Vasco/UPV-EHU, Manuel de Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Enrique Gómez-Bengoa
- Departamento
de Química Orgánica I, Universidad del País Vasco/UPV-EHU, Manuel de Lardizabal 3, Donostia-San Sebastián 20018, Spain
| | - Ernesto G. Occhiato
- Dipartimento
di Chimica “U. Schiff”, Università degli Studi di Firenze, Via della Lastruccia 13, 50019 Sesto Fiorentino (FI), Italy
| |
Collapse
|
38
|
Dhiman S, Mishra UK, Ramasastry SSV. One-Pot Trimetallic Relay Catalysis: A Unified Approach for the Synthesis of β-Carbolines and Other [c]-Fused Pyridines. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600840] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Seema Dhiman
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - Uttam K. Mishra
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - S. S. V. Ramasastry
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| |
Collapse
|
39
|
Dhiman S, Mishra UK, Ramasastry SSV. One-Pot Trimetallic Relay Catalysis: A Unified Approach for the Synthesis of β-Carbolines and Other [c]-Fused Pyridines. Angew Chem Int Ed Engl 2016; 55:7737-41. [DOI: 10.1002/anie.201600840] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Seema Dhiman
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - Uttam K. Mishra
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - S. S. V. Ramasastry
- Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER) Mohali; Knowledge City, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| |
Collapse
|
40
|
Wang Z, Xu X, Gu Z, Feng W, Qian H, Li Z, Sun X, Kwon O. Nazarov cyclization of 1,4-pentadien-3-ols: preparation of cyclopenta[b]indoles and spiro[indene-1,4'-quinoline]s. Chem Commun (Camb) 2016; 52:2811-4. [PMID: 26771024 PMCID: PMC5560599 DOI: 10.1039/c5cc08596a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The first Lewis acid-catalyzed intramolecular interrupted Nazarov cyclization of 1,4-pentadien-3-ols is described. Using FeBr3 as the catalyst, a series of new substituted cyclopenta[b]indoles was prepared-through a sequence of Nazarov cyclization, nucleophilic amination, and isomerization-with good yields and high diastereo- and regioselectivities. A similar catalytic process was also developed for the synthesis of structurally interesting spiro[indene-1,4'-quinoline]s.
Collapse
Affiliation(s)
- Zhiming Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Xingzhu Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Zhanshou Gu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Wei Feng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Houjun Qian
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Zhengyi Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Xiaoqiang Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China.
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095-1569, USA.
| |
Collapse
|
41
|
Bankar SK, Mathew J, Ramasastry SSV. Synthesis of benzofurans via an acid catalysed transacetalisation/Fries-type O → C rearrangement/Michael addition/ring-opening aromatisation cascade of β-pyrones. Chem Commun (Camb) 2016; 52:5569-72. [DOI: 10.1039/c6cc01016d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An unusual and facile approach for the synthesis of 2-benzofuranyl-3-hydroxyacetones from 6-acetoxy-β-pyrones and phenols is presented.
Collapse
Affiliation(s)
- Siddheshwar K. Bankar
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| | - Jopaul Mathew
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| |
Collapse
|
42
|
Manisha M, Dhiman S, Mathew J, Ramasastry SSV. One-pot relay catalysis: divergent synthesis of furo[3,4-b]indoles and cyclopenta[b]indoles from 3-(2-aminophenyl)-1,4-enynols. Org Biomol Chem 2016; 14:5563-8. [DOI: 10.1039/c6ob00319b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Described herein a divergent strategy for the synthesis of furo[3,4-b]indoles via a sequential Ag(i)/Bi(iii)/Pd(ii) catalysis and cyclopenta[b]indoles via a one-pot Ag(i)/Brønsted acid relay catalysis, starting from the easily accessible 3-(2 aminophenyl)-4-pentenyn-3-ols.
Collapse
Affiliation(s)
- Manisha Manisha
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| | - Seema Dhiman
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| | - Jopaul Mathew
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis Lab
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Manuali PO
- India
| |
Collapse
|
43
|
Villuri BK, Kotipalli T, kavala V, Ichake SS, Bandi V, Kuo CW, Yao CF. Synthesis of spiro isoindolinone-indolines and 1,2-disubstituted indoles from 2-iodobenzamide derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra15002k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Copper catalyzed C-terminal and N-terminal attack of 2-alkynylanilines to 2-iodobenzamides afforded isoindolinones and 1,2-disubstituted indoles, respectively.
Collapse
Affiliation(s)
| | | | - Veerababurao kavala
- Department of Chemistry
- National Taiwan Normal University
- Taipei
- Republic of China
| | - Sachin S. Ichake
- Department of Chemistry
- National Taiwan Normal University
- Taipei
- Republic of China
| | - Vijayalakshmi Bandi
- Department of Chemistry
- National Taiwan Normal University
- Taipei
- Republic of China
| | - Chun-Wei Kuo
- Department of Chemistry
- National Taiwan Normal University
- Taipei
- Republic of China
| | - Ching-Fa Yao
- Department of Chemistry
- National Taiwan Normal University
- Taipei
- Republic of China
| |
Collapse
|
44
|
Li C, Zhang HH, Fan T, Shen Y, Wu Q, Shi F. Brønsted acid-catalyzed regioselective reactions of 2-indolylmethanols with cyclic enaminone and anhydride leading to C3-functionalized indole derivatives. Org Biomol Chem 2016; 14:6932-6. [DOI: 10.1039/c6ob01282e] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An abnormal regioselective substitution of 2-indolylmethanols with nucleophiles has been established to afford C3-functionalized indole derivatives in high yield and regiospecificity (40 examples, up to 99% yield).
Collapse
Affiliation(s)
- Can Li
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Hong-Hao Zhang
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Tao Fan
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Yang Shen
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Qiong Wu
- School of Chemistry and Chemical Engineering
- Xuzhou Institute of Technology
- Xuzhou
- China
| | - Feng Shi
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| |
Collapse
|
45
|
Satpathi B, Ramasastry SSV. Morita-Baylis-Hillman Reaction of β,β-Disubstituted Enones: An Enantioselective Organocatalytic Approach for the Synthesis of Cyclopenta[b
]annulated Arenes and Heteroarenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201510457] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Bishnupada Satpathi
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER); Mohali, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis Lab; Department of Chemical Sciences; Indian Institute of Science Education and Research (IISER); Mohali, Sector 81, S. A. S. Nagar, Manuali PO Punjab 140306 India
| |
Collapse
|
46
|
Satpathi B, Ramasastry SSV. Morita-Baylis-Hillman Reaction of β,β-Disubstituted Enones: An Enantioselective Organocatalytic Approach for the Synthesis of Cyclopenta[b]annulated Arenes and Heteroarenes. Angew Chem Int Ed Engl 2015; 55:1777-81. [PMID: 26695866 DOI: 10.1002/anie.201510457] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Indexed: 11/11/2022]
Abstract
The first enantioselective organocatalytic intramolecular Morita-Baylis-Hillman (MBH) reaction of sterically highly demanding β,β-disubstituted enones is presented. The MBH reaction of β,β-disubstituted-α,β-unsaturated electron-withdrawing systems was previously considered to be unfeasible. Towards this end, designer substrates, which under simple and practical reaction conditions generate a variety of cyclopenta[b]annulated arenes and heteroarenes in excellent enantiopurities and near-quantitative yields in remarkably short reaction times, are described. The reason for the unusually facile nature of this reaction is attributed to the synergy guided and entropically favored intramolecular reaction. Further, this strategy provides easy access to a substantial number of bioactive natural products and pharmaceutically significant compounds.
Collapse
Affiliation(s)
- Bishnupada Satpathi
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Sector 81, S. A. S. Nagar, Manuali PO, Punjab, 140306, India
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Sector 81, S. A. S. Nagar, Manuali PO, Punjab, 140306, India. ,
| |
Collapse
|
47
|
Petrović M, Occhiato EG. Pentannulation of Heterocycles by Virtue of Precious Metal Catalysis. Chem Asian J 2015; 11:642-59. [DOI: 10.1002/asia.201501127] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Martina Petrović
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia 13 I-50019 Sesto Fiorentino Italy
| | - Ernesto G. Occhiato
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia 13 I-50019 Sesto Fiorentino Italy
| |
Collapse
|
48
|
Gold-Catalyzed Synthesis of Nitrogen Heterocyclic Compounds via Hydroamination Reactions. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/7081_2015_5001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
49
|
Bankar SK, Shirke RP, Ramasastry SSV. Synthesis of O,S-Containing PolycyclesviaOne-Pot Michael Addition-Cycloacetalisation Cascade. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500505] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
50
|
Dhiman S, Ramasastry SSV. One-Pot Relay Gold(I) and Brønsted Acid Catalysis: Cyclopenta[b]annulation of Indoles via Hydroamination/Nazarov-Type Cyclization Cascade of Enynols. Org Lett 2015; 17:5116-9. [DOI: 10.1021/acs.orglett.5b02632] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seema Dhiman
- Organic Synthesis and Catalysis
Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Manuali PO, Punjab 140306, India
| | - S. S. V. Ramasastry
- Organic Synthesis and Catalysis
Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Manuali PO, Punjab 140306, India
| |
Collapse
|