1
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Parisot W, Haddad M, Phansavath P, Ratovelomanana-Vidal V, Lefèvre G. Iron-Catalyzed [2+2+2] Cycloadditions for the Construction of Aromatic and Heteroaromatic Rings. Chemistry 2025; 31:e202404574. [PMID: 39977275 DOI: 10.1002/chem.202404574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2024] [Revised: 02/03/2025] [Accepted: 02/17/2025] [Indexed: 02/22/2025]
Abstract
In this review, the state-of-the-art of iron-catalyzed [2+2+2] cycloadditions applied to the formation of benzene, pyridine, and phosphabenzene derivatives is described. For decades important efforts have been made to highlight the role of iron as a powerful tool in catalysis, and this work summarizes the scope of iron-catalyzed systems for the development of new, eco-friendly, inexpensive, and practical processes for the synthesis of (hetero)aromatic rings.
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Affiliation(s)
- William Parisot
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
| | - Mansour Haddad
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
| | - Phannarath Phansavath
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
| | - Virginie Ratovelomanana-Vidal
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
| | - Guillaume Lefèvre
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
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2
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Baumann B, Dam P, Rabeah J, Kubis C, Brückner A, Jiao H, Hapke M. Photochemical Manganese-Catalyzed [2 + 2 + 2] Cycloaddition Reactions. ACS Catal 2025; 15:5718-5730. [PMID: 40207070 PMCID: PMC11976702 DOI: 10.1021/acscatal.5c00349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2025] [Revised: 02/24/2025] [Accepted: 03/05/2025] [Indexed: 04/11/2025]
Abstract
We report the cyclotrimerization reactions of triynes using Mn(I) complexes derived from MnBr(CO)5 and phosphine ligands, such as 1,1-bis(diphenylphosphino)methane (dppm). These reactions are driven by irradiation under mild conditions (30-80 °C) without the need of additional photoinitiators. Our catalytic screening revealed that counteranions and ligands significantly influence the process. This method accommodates a broad range of functionalities in the substrates, including alkyl, aryl, Bpin, SiMe3, GeEt3, PPh2, pyridyl, and thienyl moieties, without notable interference in the transformation. Additionally, this method enables reactions with oligoalkynes-like (un)substituted hexaynes, producing 2-fold cyclization products in very good yields. Under stoichiometric conditions, the cyclization of diynes with phosphaalkynes results in the unique photochemical synthesis of phosphinines. Experimental and theoretical mechanistic studies indicate that the dissociation of the diphosphine ligand precedes the involvement of the Mn carbonyl species in the catalytic cycle. The ligand plays a crucial role in stabilizing the catalyst during the catalytic transformation and preventing the formation of unreactive cluster species.
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Affiliation(s)
- Benedikt
N. Baumann
- Institute
for Catalysis (INCA), Johannes Kepler University
Linz (JKU), Altenberger Strasse 69, Linz 4040, Austria
| | - Phong Dam
- Leibniz
Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Strasse 29a, Rostock 18069, Germany
| | - Jabor Rabeah
- Leibniz
Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Strasse 29a, Rostock 18069, Germany
| | - Christoph Kubis
- Leibniz
Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Strasse 29a, Rostock 18069, Germany
| | - Angelika Brückner
- Leibniz
Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Strasse 29a, Rostock 18069, Germany
| | - Haijun Jiao
- Leibniz
Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Strasse 29a, Rostock 18069, Germany
| | - Marko Hapke
- Institute
for Catalysis (INCA), Johannes Kepler University
Linz (JKU), Altenberger Strasse 69, Linz 4040, Austria
- Leibniz
Institute for Catalysis e.V. (LIKAT), Albert-Einstein-Strasse 29a, Rostock 18069, Germany
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3
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Zhang ZT, Luo C, Yu ZX, Xu Z, Ye LW, Zhou B. Copper-Catalyzed Intermolecular [2 + 2 + 2] Annulation of Diynes with Alkynes: Construction of Carbazoles. Org Lett 2025; 27:880-886. [PMID: 39788871 DOI: 10.1021/acs.orglett.4c04623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2025]
Abstract
Transition-metal-catalyzed [2 + 2 + 2] annulation of alkynes is an efficient pathway for the synthesis of aromatic compounds. However, most of the established methods require noble metal catalysts. Herein, we report a copper-catalyzed intermolecular [2 + 2 + 2] annulation of diynes with alkynes through vinyl cation intermediates, enabling the atom-economical preparation of biologically important carbazole skeletons. The reaction shows good regioselectivity in the reaction of aryl(alkyl)alkynes. Moreover, preliminary results have also been obtained for the related catalytic atroposelective transformation. This reaction represents a rare example of non-noble-metal-catalyzed intermolecular [2 + 2 + 2] annulation of ynamides through the vinyl cation pathway.
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Affiliation(s)
- Zhen-Tao Zhang
- Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Gulei Innovation Institute, Xiamen University, Zhangzhou 363200, China
| | - Chen Luo
- Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Gulei Innovation Institute, Xiamen University, Zhangzhou 363200, China
| | - Zu-Xin Yu
- Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Gulei Innovation Institute, Xiamen University, Zhangzhou 363200, China
| | - Zhou Xu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Long-Wu Ye
- Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Gulei Innovation Institute, Xiamen University, Zhangzhou 363200, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Bo Zhou
- Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Gulei Innovation Institute, Xiamen University, Zhangzhou 363200, China
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4
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Parisot W, Haddad M, Phansavath P, Lefèvre G, Ratovelomanana-Vidal V. A Versatile, Functional Group-Tolerant, and Bench-Stable Iron Precatalyst for Building Arene and Triazine Rings by [2+2+2] Cycloadditions. Chemistry 2024; 30:e202400096. [PMID: 38319874 DOI: 10.1002/chem.202400096] [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: 01/09/2024] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/08/2024]
Abstract
We report an efficient iron-catalyzed cycloaddition procedure leading to the construction of (hetero)aromatic rings by alkyne [2+2+2] cycloisomerization. This method relies on the use of an air-stable (N,N)Fe(II) precursor easily prepared from a commercially available ligand derived from 1,10-phenanthroline, reduced in situ into a catalytically active non-innocent (N,N ⋅-)2Fe(II) species. This system displays a large scope application, operates under mild conditions and at low catalytic charges (25 cycloadducts formed, up to 1.5 mol% catalyst). Moreover, this method also enables access to 29 cycloadducts by cross-cycloisomerization between 1,6- or 1,7-diynes and alkynes in near-equimolar conditions. 1,3,5-Triazines can also be prepared with this procedure starting from the corresponding cyanamides. Scale-up reactions and post-functionalization of several cycloadducts also show that this [2+2+2] cycloaddition can be used in multistep sequences.
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Affiliation(s)
- William Parisot
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
| | - Mansour Haddad
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
| | - Phannarath Phansavath
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
| | - Guillaume Lefèvre
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
| | - Virginie Ratovelomanana-Vidal
- PSL University, Chimie ParisTech, CNRS UMR 8060, Institute of Chemistry for Life and Health Sciences, CSB2D Team, 75005, Paris, France
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5
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Singh PR, Lamba M, Goswami A. Copper-Catalyzed Chemoselective O-Arylation of Oxindoles: Access to Cyclic Aryl Carboxyimidates. J Org Chem 2024; 89:2926-2938. [PMID: 38354326 DOI: 10.1021/acs.joc.3c02341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
We have developed a highly efficient base- and additive-free chemoselective CuO-catalyzed strategy for the O-arylation of 2-oxindoles to synthesize 2-phenoxy-3H-indole and 2-phenoxy-1H-indole derivatives in the presence of diaryl iodonium salts. This method offers a variety of O-arylated oxindoles in good to excellent yields under relatively milder reaction conditions. Furthermore, this methodology was extended for the O-arylation of 2-pyridinone and isoindoline-1-one derivatives as well.
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Affiliation(s)
- Prasoon Raj Singh
- Department of Chemistry, SS Bhatnagar Block, Indian Institute of Technology, Ropar 140001, Punjab, India
| | - Manisha Lamba
- Department of Chemistry, SS Bhatnagar Block, Indian Institute of Technology, Ropar 140001, Punjab, India
| | - Avijit Goswami
- Department of Chemistry, SS Bhatnagar Block, Indian Institute of Technology, Ropar 140001, Punjab, India
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6
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Chakrabortty R, Ghosh S, Ganesh V. Ni 0-Catalyzed Regioselective [2 + 2 + 2] Cyclotrimerization of 1,3-Diynes: An Expeditious Synthesis of Hexasubstituted Alkynyl Benzenes. Org Lett 2024; 26:792-797. [PMID: 38252507 DOI: 10.1021/acs.orglett.3c03863] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
In the present work, we demonstrate a regioselective [2 + 2 + 2] cyclotrimerization of 1,3-diynes catalyzed by Ni0 to provide hexasubstituted benzenes (HSBs). HSBs have significant applications as functional materials and pharmaceuticals. The present protocol exhibited remarkable versatility, transforming 1,3-diynes with diverse alkyl, aryl, and heterocyclic groups to the corresponding HSBs. With the help of control experiments and density functional theory (DFT), the mechanism of the reaction and the origin of regioselectivity were elucidated.
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Affiliation(s)
- Rajesh Chakrabortty
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721 302, West Bengal, India
| | - Suman Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721 302, West Bengal, India
| | - Venkataraman Ganesh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721 302, West Bengal, India
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7
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Singh PR, Gopal B, Kumar M, Goswami A. A metal-free BF 3·OEt 2 mediated chemoselective protocol for the synthesis of propargylic cyclic imines. Org Biomol Chem 2022; 20:4933-4941. [PMID: 35648486 DOI: 10.1039/d2ob00530a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chemoselective and metal/additive-free protocol for the synthesis of propargylic cyclic imine derivatives via (3 + 2)-cycloaddition of donor-acceptor cyclopropanes and alkynylnitriles in the presence of BF3·OEt2 has been established. The newly developed methodology provided access to a variety of propargylic cyclic imines in good to excellent yields. In addition, the synthesis of propargylic amines and the corresponding very stable enol derivatives from the title compound is also explored.
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Affiliation(s)
- Prasoon Raj Singh
- Department of Chemistry, Indian Institute of Technology Ropar, SS Bhatnagar Block, Main Campus, Rupnagar, Punjab-140001, India.
| | - Braj Gopal
- Department of Chemistry, Indian Institute of Technology Ropar, SS Bhatnagar Block, Main Campus, Rupnagar, Punjab-140001, India.
| | - Madan Kumar
- Department of Chemistry, Indian Institute of Technology Ropar, SS Bhatnagar Block, Main Campus, Rupnagar, Punjab-140001, India.
| | - Avijit Goswami
- Department of Chemistry, Indian Institute of Technology Ropar, SS Bhatnagar Block, Main Campus, Rupnagar, Punjab-140001, India.
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8
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Hore S, Singh A, De S, Singh N, Gandon V, Singh RP. Polyarylquinone Synthesis by Relayed Dehydrogenative [2 + 2 + 2] Cycloaddition. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Soumyadip Hore
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Abhijeet Singh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shreemoyee De
- Center for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Neetu Singh
- Center for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS UMR 8182, Université Paris Saclay, Orsay Cedex 91405, France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, Palaiseau Cedex 91128, France
| | - Ravi P. Singh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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9
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Neto JSS, Zeni G. Recent Developments in the Cyclization of Alkynes and Nitrogen Compounds for the Synthesis of Indole Derivatives. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jose S. S. Neto
- Departamento de Química Universidade Federal de Santa Catarina Florianópolis Santa Catarina 88040-900 Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE Universidade Federal de Santa Maria Santa Maria Rio Grande do Sul 97105-900 Brazil
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10
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Bhatt D, Kalaramna P, Kumar K, Goswami A. Chemoselective Ru II
-Catalyzed Synthesis of Aryl Thiocyanates and Step-wise Double [2+2+2] Cycloadditions to 2-Aryl Thiopyridines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000691] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Divya Bhatt
- Department of Chemistry; Indian Institute of Technology Ropar; Nangal Road 140001 Rupnagar Punjab India
| | - Pratibha Kalaramna
- Department of Chemistry; Indian Institute of Technology Ropar; Nangal Road 140001 Rupnagar Punjab India
| | - Krishn Kumar
- Department of Chemistry; Indian Institute of Technology Ropar; Nangal Road 140001 Rupnagar Punjab India
| | - Avijit Goswami
- Department of Chemistry; Indian Institute of Technology Ropar; Nangal Road 140001 Rupnagar Punjab India
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11
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Affiliation(s)
- Divya Bhatt
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab- 140001 India
| | - Chandresh Kumari
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab- 140001 India
| | - Avijit Goswami
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road, Rupnagar Punjab- 140001 India
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12
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Orsino A, Gutiérrez del Campo M, Lutz M, Moret ME. Enhanced Catalytic Activity of Nickel Complexes of an Adaptive Diphosphine-Benzophenone Ligand in Alkyne Cyclotrimerization. ACS Catal 2019; 9:2458-2481. [PMID: 30854242 PMCID: PMC6400243 DOI: 10.1021/acscatal.8b05025] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/29/2019] [Indexed: 12/15/2022]
Abstract
Adaptive ligands, which can adapt their coordination mode to the electronic structure of various catalytic intermediates, offer the potential to develop improved homogeneous catalysts in terms of activity and selectivity. 2,2'-Diphosphinobenzophenones have previously been shown to act as adaptive ligands, the central ketone moiety preferentially coordinating reduced metal centers. Herein, the utility of this scaffold in nickel-catalyzed alkyne cyclotrimerization is investigated. The complex [( p-tolL1)Ni(BPI)] ( p-tolL1 = 2,2'-bis(di(para-tolyl)phosphino)-benzophenone; BPI = benzophenone imine) is an active catalyst in the [2 + 2 + 2] cyclotrimerization of terminal alkynes, selectively affording 1,2,4-substituted benzenes from terminal alkynes. In particular, this catalyst outperforms closely related bi- and tridentate phosphine-based Ni catalysts. This suggests a reaction pathway involving a hemilabile interaction of the C=O unit with the nickel center. This is further borne out by a comparative study of the observed resting states and DFT calculations.
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Affiliation(s)
- Alessio
F. Orsino
- Utrecht
University, Organic Chemistry
and Catalysis, Debye Institute for Nanomaterials Science, Faculty
of Science, Universiteitsweg
99, 3584 CG Utrecht, The Netherlands
| | - Manuel Gutiérrez del Campo
- Utrecht
University, Organic Chemistry
and Catalysis, Debye Institute for Nanomaterials Science, Faculty
of Science, Universiteitsweg
99, 3584 CG Utrecht, The Netherlands
| | - Martin Lutz
- Utrecht
University, Crystal and Structural
Chemistry, Bijvoet Center for Biomolecular Research, Faculty of Science, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Marc-Etienne Moret
- Utrecht
University, Organic Chemistry
and Catalysis, Debye Institute for Nanomaterials Science, Faculty
of Science, Universiteitsweg
99, 3584 CG Utrecht, The Netherlands
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13
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Zhang Y, Wu W, Fu C, Huang X, Ma S. Benzene construction via Pd-catalyzed cyclization of 2,7-alkadiynylic carbonates in the presence of alkynes. Chem Sci 2019; 10:2228-2235. [PMID: 30881648 PMCID: PMC6385558 DOI: 10.1039/c8sc04681f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 12/18/2018] [Indexed: 12/27/2022] Open
Abstract
A palladium-catalyzed highly regio- and chemo-selective cyclization of 2,7-alkadiynylic carbonates with functionalized alkynes to construct 1,3-dihydroisobenzofuran and isoindoline derivatives under mild conditions has been developed. Functional groups such as alcohol, sulfonamide, and indoles could be well tolerated. After careful mechanistic studies, a mechanism involving oxidative addition and regioselectivity-defined double alkyne insertions has been proposed.
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Affiliation(s)
- Yuchen Zhang
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
| | - Wangteng Wu
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
| | - Xin Huang
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis , Department of Chemistry , Zhejiang University , Hangzhou 310027 , Zhejiang , People's Republic of China . ;
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14
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Kotha S, Sreevani G. Diversity-Oriented Approach to Spirorhodanines via a [2+2+2] Cyclotrimerization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800775] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Powai Mumbai India
| | - Gaddamedi Sreevani
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Powai Mumbai India
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15
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Highly regioselective cobalt-catalyzed [2+2+2] cycloaddition of fluorine-containing internal alkynes to construct various fluoroalkylated benzene derivatives. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.06.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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16
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Kotha S, Sreevani G. Synthesis of benzyl halide derivatives of spirohydantoins via [2+2+2] cyclotrimerization reaction. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Bhatt D, Patel N, Chowdhury H, Bharatam PV, Goswami A. Additive-Controlled Switchable Selectivity from Cyanobenzenes to 2-Alkynylpyridines: Ruthenium(II)-Catalyzed [2+2+2] Cycloadditions of Diynes and Alkynylnitriles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800228] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Divya Bhatt
- Department of Chemistry; Indian Institute of Technology Ropar; Nangal Road Rupnagar, Punjab- 140001 India
| | - Neha Patel
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research (NIPER); Sector 67, S. A. S. Nagar 160062 Punjab India
| | - Hrishikesh Chowdhury
- Department of Chemistry; Indian Institute of Technology Ropar; Nangal Road Rupnagar, Punjab- 140001 India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research (NIPER); Sector 67, S. A. S. Nagar 160062 Punjab India
| | - Avijit Goswami
- Department of Chemistry; Indian Institute of Technology Ropar; Nangal Road Rupnagar, Punjab- 140001 India
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18
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Kotha S, Sreevani G. [2 + 2 + 2] Cyclotrimerization with Propargyl Halides as Copartners: Formal Total Synthesis of the Antitumor Hsp90 Inhibitor AT13387. ACS OMEGA 2018; 3:1850-1855. [PMID: 31458497 PMCID: PMC6641397 DOI: 10.1021/acsomega.7b01976] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 01/22/2018] [Indexed: 05/16/2023]
Abstract
Heat shock protein 90 (Hsp90) inhibitors play a remarkable role in cellular growth, and they were shown to exhibit antitumor activity. The Hsp90 inhibitor AT13387 (onalespib) is under clinical trials for the treatment of refractory gastrointestinal stromal tumors. Recently, it was demonstrated that this compound also exhibits inhibition against bladder cancer. Here, we report isoindoline- and isoindolinone-based (halomethyl)benzenes via a [2 + 2 + 2] cyclotrimerization in the presence of catalytic amounts of Mo(CO)6. This strategy has been extended to synthesize the key precursor of the Hsp90 inhibitor, AT13387.
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19
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Xu F, Si XJ, Wang XN, Kou HD, Chen DM, Liu CS, Du M. A high-activity cobalt-based MOF catalyst for [2 + 2 + 2] cycloaddition of diynes and alkynes: insights into alkyne affinity and selectivity control. RSC Adv 2018; 8:4895-4899. [PMID: 35539562 PMCID: PMC9077787 DOI: 10.1039/c7ra12136a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Accepted: 01/15/2018] [Indexed: 11/22/2022] Open
Abstract
This work develops a highly efficient metal–organic framework (MOF) catalyst for the straightforward synthesis of functionalized benzenes via [2 + 2 + 2] cycloaddition. As efficient cooperative catalyst for such reactions, Co-MOF-1, shows great sustainability and efficiency. This new catalytic system can lead to the generation of a series of structurally diverse benzenes in good to excellent yields (up to 95%). Heterogenous catalysis of [2 + 2 + 2] cycloaddition was firstly achieved by a low-cost, air-stable and reusable Co-MOF catalyst, affording structurally diverse functionalized benzenes under mild conditions with high efficiency and selectivity.![]()
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Affiliation(s)
- Fen Xu
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Xiao-Ju Si
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Xiao-Ning Wang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Hao-Dong Kou
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Di-Ming Chen
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Chun-Sen Liu
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Miao Du
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry Zhengzhou 450002 China
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