1
|
Yu KX, Liu SN, Xing YY, Huang F, Wang WJ, Wang Q, Chen DZ, Wang J. Mechanistic Investigation on the Regioselectivity of Electrochemical Co(II)-Catalyzed [2 + 2 + 2] Cycloaddition of Terminal Acetylenes. J Org Chem 2024. [PMID: 38779840 DOI: 10.1021/acs.joc.4c00513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
In this paper, the regioselectivity of electrochemical Co(II)-catalyzed [2 + 2 + 2] cycloaddition of terminal alkynes was investigated using density functional theory. We explored in detail the energy profiles for both 1,2,4- and 1,3,5-regioselectivity pathways and revealed the origin of the regioselectivity. Two kinds of conformational isomers derived from the different coordination modes of alkynes with cobaltacyclopentadiene have been found, which were formed through electrochemically mediated redox processes. The regioselectivity of the reaction depends on the two coordination modes. When the Co(II) center attacks α-C of the third alkyne, while β2-C in cyclopentadiene bonds to β-C of the alkyne, the reaction favors the formation of 1,2,4-products. In contrast, when the Co(II) center connects to β-C of the alkyne, it forms only the 1,3,5-products via [4 + 2] cycloaddition because of the steric repulsion between the bulky ligand on Co(II) and the phenyl group in the alkyne.
Collapse
Affiliation(s)
- Kai-Xin Yu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Sheng-Nan Liu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Yang-Yang Xing
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Fang Huang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Wen-Juan Wang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Qiong Wang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P. R. China
| | - De-Zhan Chen
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Jin Wang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, P. R. China
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Geer AM, Navarro J, Alamán-Valtierra P, Coles NT, Kays DL, Tejel C. Homotropic Cooperativity in Iron-Catalyzed Alkyne Cyclotrimerizations. ACS Catal 2023; 13:6610-6618. [PMID: 37229435 PMCID: PMC10204060 DOI: 10.1021/acscatal.3c00764] [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: 02/17/2023] [Revised: 04/18/2023] [Indexed: 05/27/2023]
Abstract
Enhancing catalytic activity through synergic effects is a current challenge in homogeneous catalysis. In addition to the well-established metal-metal and metal-ligand cooperation, we showcase here an example of self-activation by the substrate in controlling the catalytic activity of the two-coordinate iron complex [Fe(2,6-Xyl2C6H3)2] (1, Xyl = 2,6-Me2C6H3). This behavior was observed for aryl acetylenes in their regioselective cyclotrimerization to 1,2,4-(aryl)-benzenes. Two kinetically distinct regimes are observed dependent upon the substrate-to-catalyst ratio ([RC≡CH]0/[1]0), referred to as the low ([RC≡CH]0/[1]0 < 40) and high ([RC≡CH]0/[1]0 > 40) regimes. Both showed sigmoidal kinetic response, with positive Hill indices of 1.85 and 3.62, respectively, and nonlinear Lineweaver-Burk replots with an upward curvature, which supports positive substrate cooperativity. Moreover, two alkyne molecules participate in the low regime, whereas up to four are involved in the high regime. The second-order rate dependence on 1 indicates that binuclear complexes are the catalytically competent species in both regimes, with that in the high one being 6 times faster than that involved in the low one. Moreover, Eyring plot analyses revealed two different catalytic cycles, with a rate-determining step more endergonic in the low regime than in the high one, but with a more ordered transition state in the high regime than in the low one.
Collapse
Affiliation(s)
- Ana M. Geer
- Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH), Departamento de Química Inorgánica, Facultad
de Ciencias, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Janeth Navarro
- Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH), Departamento de Química Inorgánica, Facultad
de Ciencias, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Pablo Alamán-Valtierra
- Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH), Departamento de Química Inorgánica, Facultad
de Ciencias, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Nathan T. Coles
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Deborah L. Kays
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Cristina Tejel
- Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH), Departamento de Química Inorgánica, Facultad
de Ciencias, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| |
Collapse
|
4
|
Féo M, Bakas NJ, Radović A, Parisot W, Clisson A, Chamoreau LM, Haddad M, Ratovelomanana-Vidal V, Neidig ML, Lefèvre G. Thermally Stable Redox Noninnocent Bathocuproine-Iron Complex for Cycloaddition Reactions. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
|
5
|
Kato Y, Yoshino T, Gao M, Hasegawa JY, Kojima M, Matsunaga S. Iron/Photosensitizer Hybrid System Enables the Synthesis of Polyaryl-Substituted Azafluoranthenes. J Am Chem Soc 2022; 144:18450-18458. [PMID: 36167469 DOI: 10.1021/jacs.2c06993] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photosensitization of organometallics is a privileged strategy that enables challenging transformations in transition-metal catalysis. However, the usefulness of such photocatalyst-induced energy transfer has remained opaque in iron-catalyzed reactions despite the intriguing prospects of iron catalysis in synthetic chemistry. Herein, we demonstrate the use of iron/photosensitizer-cocatalyzed cycloaddition to synthesize polyarylpyridines and azafluoranthenes, which have been scarcely accessible using the established iron-catalyzed protocols. Mechanistic studies indicate that triplet energy transfer from the photocatalyst to a ferracyclic intermediate facilitates the thermally demanding nitrile insertion and accounts for the distinct reactivity of the hybrid system. This study thus provides the first demonstration of the role of photosensitization in overcoming the limitations of iron catalysis.
Collapse
Affiliation(s)
- Yoshimi Kato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.,Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan
| | - Min Gao
- Institute for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
| | - Jun-Ya Hasegawa
- Institute for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.,Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan
| |
Collapse
|
6
|
Arepally S, Nandhakumar P, González-Montiel GA, Dzhaparova A, Kim G, Ma A, Nam KM, Yang H, Ha-Yeon Cheong P, Park JK. Unified Electrochemical Synthetic Strategy for [2 + 2 + 2] Cyclotrimerizations: Construction of 1,3,5- and 1,2,4-Trisubstituted Benzenes from Ni(I)-Mediated Reduction of Alkynes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sagar Arepally
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Ponnusamy Nandhakumar
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | | | - Alina Dzhaparova
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Gyeongho Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Ahyeon Ma
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Ki Min Nam
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Haesik Yang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Paul Ha-Yeon Cheong
- Department of Chemistry, Oregon State University, Corvallis 97331, United States
| | - Jin Kyoon Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| |
Collapse
|
7
|
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: 1.0] [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
| |
Collapse
|
8
|
Hou C, Ma Y, Zhang Y, Xu H, Wu Y, Zhao J, Wang Y, Liu Y. Ni‐Catalyzed Regioselective Cyclotrimerization of Internal Esteryl Alkynes towards Polysubstituted Benzene Rings. Helv Chim Acta 2022. [DOI: 10.1002/hlca.202200005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chao Hou
- Changchun University of Technology College of Chemistry and Life Science CHINA
| | - Yan Ma
- Jilin Baojinng Carbon Materials Co. Production Department CHINA
| | - Yongqi Zhang
- Changchun University of Technology College of Chemistry and Life Science CHINA
| | - Huiling Xu
- Jilin Baojing Carbon Materials Co. Production Department CHINA
| | - Yuanqi Wu
- Changchun University of Technology College of Chemistry and Life Science CHINA
| | - Jinbo Zhao
- Changchun University of Technology College of Chemistry and Life Science CHINA
| | - Yuchao Wang
- Changchun University of Technology College of Chemistry and Life Science CHINA
| | - Yu Liu
- Changchun University of Technology College of Chemistry and Life Science Yan'an Road 2005 130012 Changchun CHINA
| |
Collapse
|
9
|
Weller R, Müller I, Werncke CG. Catalytic 1,3‐H Atom Shift of a Terminal Benzylic Alkyne by Iron and Alkali Metal Silylamides – Switching between Allene and Internal Alkyne. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ruth Weller
- Department of Chemistry Philipps-University Marburg Hans-Meerwein-Straße 4 D-35032 Marburg Germany
| | - Igor Müller
- Department of Chemistry Philipps-University Marburg Hans-Meerwein-Straße 4 D-35032 Marburg Germany
| | - C. Gunnar Werncke
- Department of Chemistry Philipps-University Marburg Hans-Meerwein-Straße 4 D-35032 Marburg Germany
| |
Collapse
|
10
|
Fan JT, Fan XH, Gao CY, Wei J, Yang LM. Regioselectively switchable alkyne cyclotrimerization catalyzed by the system of Ni(II)/bidentate P-ligand/Zn with ZnI 2 as additive. Org Chem Front 2022. [DOI: 10.1039/d1qo01913a] [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 simple catalyst system of Ni(PPh3)2Cl2/dppb or dppm/Zn can effect an efficient and regioselectively controlled alkyne cyclotrimerization to form 1,2,4- (with no additive) or 1,3,5-regioisomers (with the use of ZnI2...
Collapse
|
11
|
Pokhriyal D, Heins SP, Sifri RJ, Gentekos DT, Coleman RE, Wolczanski PT, Cundari TR, Fors BP, Lancaster KM, MacMillan SN. Reversible C-C Bond Formation, Halide Abstraction, and Electromers in Complexes of Iron Containing Redox-Noninnocent Pyridine-imine Ligands. Inorg Chem 2021; 60:18662-18673. [PMID: 34889590 DOI: 10.1021/acs.inorgchem.1c01815] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The exploration of pyridine-imine (PI) iron complexes that exhibit redox noninnocence (RNI) led to several interesting discoveries. The reduction of (PI)FeX2 species afforded disproportionation products such as (dmpPI)2FeX (dmp = 2,6-Me2-C6H3, X = Cl, Br; 8-X) and (dippPI)2FeX (dipp = 2,6-iPr2-C6H3, X = Cl, Br; 9-X), which were independently prepared by reductions of (PI)FeX2 in the presence of PI. The crystal structure of 8-Br possessed an asymmetric unit with two distinct electromers, species with different electronic GSs: a low-spin (S = 1/2) configuration derived from an intermediate-spin S = 1 core antiferromagnetically (AF) coupled to an S = 1/2 PI ligand, and an S = 3/2 center resulting from a high-spin S = 2 core AF-coupled to an S = 1/2 PI ligand. Calculations were used to energetically compare plausible ground states. Polydentate diazepane-PI (DHPI) ligands were applied to the synthesis of monomeric dihalides (DHPI)FeX2 (X = Cl, 1-Cl2; X = Br, 1-Br2); reduction generated the highly distorted bioctahedral dimers (DHPA)2Fe2X2 ((3-X)2) containing a C-C bond formed from imine coupling; the monomers 1-X2 could be regenerated upon Ph3CX oxidation. Dihalides and their reduced counterparts were subjected to various alkyl halides and methyl methacrylate (MMA), generating polymers with little to no molecular weight control, indicative of simple radical-initiated polymerization.
Collapse
Affiliation(s)
- Devika Pokhriyal
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| | - Spencer P Heins
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| | - Renee J Sifri
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| | - Dillon T Gentekos
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| | - Rachael E Coleman
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| | - Peter T Wolczanski
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| | - Thomas R Cundari
- Department of Chemistry, CASCaM, University of North Texas, Denton, Texas 76201, United States
| | - Brett P Fors
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| | - Kyle M Lancaster
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| | - Samantha N MacMillan
- Department of Chemistry & Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York, 14853, United States
| |
Collapse
|
12
|
Liang K, Lu L, Liu X, Yang D, Wang S, Gao Y, Alhumade H, Yi H, Lei A. Electrochemical Cobalt-catalyzed Cyclotrimerization of Alkynes to 1,2,4-Substituted Arenes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04639] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kailun Liang
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Lijun Lu
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Xing Liu
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Dali Yang
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Shengchun Wang
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Yiming Gao
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Hesham Alhumade
- Department of Chemical and Materials Engineering, Center of Research Excellence in Renewable Energy and Power Ststems, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hong Yi
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Aiwen Lei
- The Institute for Advanced Studies (IAS), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
- Department of Chemical and Materials Engineering, Abdulaziz University. Jeddah 21589, Saudi Arabia
| |
Collapse
|
13
|
Sen A, Sato T, Ohno A, Baek H, Muranaka A, Yamada YMA. Polymer-Supported-Cobalt-Catalyzed Regioselective Cyclotrimerization of Aryl Alkynes. JACS AU 2021; 1:2080-2087. [PMID: 34841419 PMCID: PMC8611791 DOI: 10.1021/jacsau.1c00360] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Indexed: 05/04/2023]
Abstract
A convoluted poly(4-vinylpyridine) cobalt(II) (P4VP-CoCl2) system was developed as a stable and reusable heterogeneous catalyst. The local structure near the Co atom was determined on the basis of experimental data and theoretical calculations. This immobilized cobalt catalyst showed high selectivity and catalytic activity in the [2 + 2 + 2] cyclotrimerization of terminal aryl alkynes. With 0.033 mol % P4VP-CoCl2, the regioselective formation of 1,3,5-triarylbenzene was realized without 1,2,4-triarylbenzene formation. Further, a multigram-scale (11 g) reaction proceeded efficiently. In addition, the polymer-supported catalyst was successfully recovered and used three times. X-ray photoelectron spectroscopy analysis of the recovered catalyst suggested that cobalt was in the +2 oxidation state. The 1,3,5-triarylbenzene derivatives were applied to the synthesis of a molecular beam electron resist and a polycyclic aromatic hydrocarbon.
Collapse
|
14
|
Ratovelomanana-Vidal V, Matton P, Huvelle S, Haddad M, Phansavath P. Recent Progress in Metal-Catalyzed [2+2+2] Cycloaddition Reactions. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1719831] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AbstractMetal-catalyzed [2+2+2] cycloaddition is a powerful tool that allows rapid construction of functionalized 6-membered carbo- and heterocycles in a single step through an atom-economical process with high functional group tolerance. The reaction is usually regio- and chemoselective although selectivity issues can still be challenging for intermolecular reactions involving the cross-[2+2+2] cycloaddition of two or three different alkynes and various strategies have been developed to attain high selectivities. Furthermore, enantioselective [2+2+2] cycloaddition is an efficient means to create central, axial, and planar chirality and a variety of chiral organometallic complexes can be used for asymmetric transition-metal-catalyzed inter- and intramolecular reactions. This review summarizes the recent advances in the field of [2+2+2] cycloaddition.1 Introduction2 Formation of Carbocycles2.1 Intermolecular Reactions2.1.1 Cyclotrimerization of Alkynes2.1.2 [2+2+2] Cycloaddition of Two Different Alkynes2.1.3 [2+2+2] Cycloaddition of Alkynes/Alkenes with Alkenes/Enamides2.2 Partially Intramolecular [2+2+2] Cycloaddition Reactions2.2.1 Rhodium-Catalyzed [2+2+2] Cycloaddition2.2.2 Molybdenum-Catalyzed [2+2+2] Cycloaddition2.2.3 Cobalt-Catalyzed [2+2+2] Cycloaddition2.2.4 Ruthenium-Catalyzed [2+2+2] Cycloaddition2.2.5 Other Metal-Catalyzed [2+2+2] Cycloaddition2.3 Totally Intramolecular [2+2+2] Cycloaddition Reactions3 Formation of Heterocycles3.1 Cycloaddition of Alkynes with Nitriles3.2 Cycloaddition of 1,6-Diynes with Cyanamides3.3 Cycloaddition of 1,6-Diynes with Selenocyanates3.4 Cycloaddition of Imines with Allenes or Alkenes3.5 Cycloaddition of (Thio)Cyanates and Isocyanates3.6 Cycloaddition of 1,3,5-Triazines with Allenes3.7 Cycloaddition of Aldehydes with Enynes or Allenes/Alkenes3.8 Totally Intramolecular [2+2+2] Cycloaddition Reactions4 Conclusion
Collapse
|
15
|
Song S, Li C, Liu T, Zhang P, Wang X. H-BPin/KO tBu Promoted Activation of Cobalt Salt to a Heterotopic Catalyst for Highly Selective Cyclotrimerization of Alkynes. Org Lett 2021; 23:6925-6930. [PMID: 34428067 DOI: 10.1021/acs.orglett.1c02493] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A mixture of HBPin with KOtBu was found to activate cobalt salt to form a heterotopic cobalt species that is highly active for catalytic intermolecular trimerization of alkynes. This protocol affords 1,2,4-regioisomers in good yields with high regioselectivities under mild conditions. These salient features, together with the operational simplicity and high efficiency, as well as obviating the use of any costly and/or air sensitive ligands, renders the protocol promising for practical applications.
Collapse
Affiliation(s)
- Shuo Song
- Green Catalysis Center, College of Chemistry, Zhengzhou University, 100 Science Avenue, High-Tech District, Zhengzhou 450001 People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Chuhan Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Tianfen Liu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, 100 Science Avenue, High-Tech District, Zhengzhou 450001 People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Panke Zhang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, 100 Science Avenue, High-Tech District, Zhengzhou 450001 People's Republic of China.,Zhengzhou Sino-Crystal Diamond Co., Ltd., 20 Bitao Road, Zhengzhou 450001, People's Republic of China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China.,School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, People's Republic of China
| |
Collapse
|
16
|
Kim H, Koo B. Iron(III) Sensors Based on the Fluorescence Quenching of Poly(phenylene ethynylene)s and Iron-Detecting PDMS Pads. Macromol Res 2021. [DOI: 10.1007/s13233-021-9041-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
17
|
Doll JS, Eichelmann R, Hertwig LE, Bender T, Kohler VJ, Bill E, Wadepohl H, Roşca DA. Iron-Catalyzed Trimerization of Terminal Alkynes Enabled by Pyrimidinediimine Ligands: A Regioselective Method for the Synthesis of 1,3,5-Substituted Arenes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00978] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Julianna S. Doll
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, Heidelberg 69120, Germany
| | - Robert Eichelmann
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, Heidelberg 69120, Germany
| | - Leif E. Hertwig
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, Heidelberg 69120, Germany
| | - Thilo Bender
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, Heidelberg 69120, Germany
| | - Vincenz J. Kohler
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, Heidelberg 69120, Germany
| | - Eckhard Bill
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstraße 24-36, Mülheim/Ruhr 45470, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, Heidelberg 69120, Germany
| | - Dragoş-Adrian Roşca
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 276, Heidelberg 69120, Germany
| |
Collapse
|
18
|
Provis-Evans CB, Lau S, Krewald V, Webster RL. Regioselective Alkyne Cyclotrimerization with an In Situ-Generated [Fe(II)H(salen)]·Bpin Catalyst. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03068] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Cei B. Provis-Evans
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Samantha Lau
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Vera Krewald
- Department of Chemistry, Theoretical Chemistry, TU Darmstadt, Alarich-Weiss-St. 4, 64287 Darmstadt, Germany
| | - Ruth L. Webster
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| |
Collapse
|
19
|
Neumeier M, Chakraborty U, Schaarschmidt D, de la Pena O'Shea V, Perez‐Ruiz R, Jacobi von Wangelin A. Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes. Angew Chem Int Ed Engl 2020; 59:13473-13478. [PMID: 32190960 PMCID: PMC7496134 DOI: 10.1002/anie.202000907] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Indexed: 11/11/2022]
Abstract
Successful combinations of visible-light photocatalysis with metal catalysis have recently enabled the development of hitherto unknown chemical reactions. Dual mechanisms from merging metal-free photocatalysts and earth-abundant metal catalysts are still in their infancy. We report a photo-organo-iron-catalyzed cyclotrimerization of alkynes by photoredox activation of a ligand-free Fe catalyst. The reaction operates under very mild conditions (visible light, 20 °C, 1 h) with 1-2 mol % loading of the three catalysts (dye, amine, FeCl2 ).
Collapse
Affiliation(s)
- Michael Neumeier
- Department of ChemistryUniversity of HamburgMartin Luther King Pl 620146HamburgGermany
| | - Uttam Chakraborty
- Department of ChemistryUniversity of HamburgMartin Luther King Pl 620146HamburgGermany
| | - Dieter Schaarschmidt
- Department of ChemistryUniversity of HamburgMartin Luther King Pl 620146HamburgGermany
| | | | - Raul Perez‐Ruiz
- Photoactivated ProcessesIMDEA Energy InstituteRamin de la Sagra 328935MistolesSpain
- Departamento de QuímicaUniversitat Politècnica de ValènciaCamino de Vera s/n46022ValenciaSpain
| | | |
Collapse
|
20
|
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: 0.8] [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
| |
Collapse
|
21
|
Neumeier M, Chakraborty U, Schaarschmidt D, Pena O'Shea V, Perez‐Ruiz R, Jacobi von Wangelin A. Combined Photoredox and Iron Catalysis for the Cyclotrimerization of Alkynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Michael Neumeier
- Department of Chemistry University of Hamburg Martin Luther King Pl 6 20146 Hamburg Germany
| | - Uttam Chakraborty
- Department of Chemistry University of Hamburg Martin Luther King Pl 6 20146 Hamburg Germany
| | - Dieter Schaarschmidt
- Department of Chemistry University of Hamburg Martin Luther King Pl 6 20146 Hamburg Germany
| | - Victor Pena O'Shea
- Photoactivated Processes IMDEA Energy Institute Ramin de la Sagra 3 28935 Mistoles Spain
| | - Raul Perez‐Ruiz
- Photoactivated Processes IMDEA Energy Institute Ramin de la Sagra 3 28935 Mistoles Spain
- Departamento de Química Universitat Politècnica de València Camino de Vera s/n 46022 Valencia Spain
| | | |
Collapse
|
22
|
Guðmundsson A, Bäckvall JE. On the Use of Iron in Organic Chemistry. Molecules 2020; 25:molecules25061349. [PMID: 32188092 PMCID: PMC7144124 DOI: 10.3390/molecules25061349] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 12/31/2022] Open
Abstract
Transition metal catalysis in modern organic synthesis has largely focused on noble transition metals like palladium, platinum and ruthenium. The toxicity and low abundance of these metals, however, has led to a rising focus on the development of the more sustainable base metals like iron, copper and nickel for use in catalysis. Iron is a particularly good candidate for this purpose due to its abundance, wide redox potential range, and the ease with which its properties can be tuned through the exploitation of its multiple oxidation states, electron spin states and redox potential. This is a fact made clear by all life on Earth, where iron is used as a cornerstone in the chemistry of living processes. In this mini review, we report on the general advancements in the field of iron catalysis in organic chemistry covering addition reactions, C-H activation, cross-coupling reactions, cycloadditions, isomerization and redox reactions.
Collapse
Affiliation(s)
- Arnar Guðmundsson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden;
| | - Jan-E. Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden;
- Department of Natural Sciences, Mid Sweden University, Holmgatan 10, 85179 Sundsvall, Sweden
- Correspondence: ; Tel.: +46-08-674-71-78
| |
Collapse
|
23
|
Cheng J, Chen Q, Leng X, Ye S, Deng L. Three-Coordinate Iron(0) Complexes with N-Heterocyclic Carbene and Vinyltrimethylsilane Ligation: Synthesis, Characterization, and Ligand Substitution Reactions. Inorg Chem 2019; 58:13129-13141. [PMID: 31536336 DOI: 10.1021/acs.inorgchem.9b02009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Low-coordinate iron(0) species are implicated as intermediates in a range of iron-catalyzed organic transformations. Isolable iron(0) complexes with coordination numbers of less than four, however, are rarely known. In continuing with our interests in three-coordinate iron(0) complexes with N-heterocyclic carbene (NHC) and alkene ligation, we report herein the synthesis and ligand substitution reactivity of three-coordinate iron(0) complexes featuring monodentate alkene ligands, [(NHC)Fe(η2-vtms)2] (vtms = vinyltrimethylsilane, NHC = 1,3-bis(2',6'-diisopropylphenyl)-imidazol-2-ylidene (IPr), 1; 1,3-bis(2',6'-diisopropylphenyl)-4,5-tetramethylene-imidazol-2-ylidene (cyIPr), 2; 1,3-bis(2',6'-diisopropylphenyl)-4,5,6,7-tetrahydro-1,3-diazepin-2-ylidene (7-IPr), 3). Complexes 1-3 were synthesized from the one-pot reactions of ferrous dihalides with the N-(2,6-diisopropylphenyl)-substituted NHC ligands, vtms, and KC8. Reactivity study of 1 revealed its facile ligand substitution reactions with terminal aryl alkynes, ketones, isocyanides, and CO, by which iron(0) complexes [(IPr)Fe(η2-HCCAr)] (Ar = Ph, 5; p-CH3C6H4, 6; 3,5-(CF3)2C6H3, 7), [(IPr)Fe(η2-OCPh2)2] (8), [(IPr)Fe(CNR)4] (R = 2,6-Me2C6H3, 9; But, 10), and (IPr)Fe(CO)4 (11) were prepared in good yields. These iron(0) complexes have been characterized by 1H NMR, solution magnetic susceptibility measurement, single-crystal X-ray diffraction study, 57Fe Mössbauer spectroscopy, and elemental analysis. Characterization data and computational studies suggest S = 1 ground-spin states for three-coordinate iron(0) complexes 1-3 and 5-8 and S = 0 ground states for 9-11. Theoretical studies on the three-coordinate complexes 1, 6, and 8 indicated pronounced metal-to-ligand backdonation from occupied Fe 3d orbitals to the π* orbitals of the C═C, C≡C, and C═O moieties of the π ligands. In addition, 1 proved an effective precatalyst for the cyclotrimerization reaction of alkynes.
Collapse
Affiliation(s)
- Jun Cheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai , 200032 , PR China
| | - Qi Chen
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai , 200032 , PR China
| | - Xuebing Leng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai , 200032 , PR China
| | - Shengfa Ye
- Max-Planck Institut für Kohlenforschung , Kaiser-Wilhelm-Platz 1 , Mülheim an der Ruhr D-45470 , Germany
| | - Liang Deng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road , Shanghai , 200032 , PR China
| |
Collapse
|
24
|
Gregori BJ, Schwarzhuber F, Pöllath S, Zweck J, Fritsch L, Schoch R, Bauer M, Jacobi von Wangelin A. Stereoselective Alkyne Hydrogenation by using a Simple Iron Catalyst. CHEMSUSCHEM 2019; 12:3864-3870. [PMID: 31265757 DOI: 10.1002/cssc.201900926] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/04/2019] [Indexed: 06/09/2023]
Abstract
The stereoselective hydrogenation of alkynes constitutes one of the key approaches for the construction of stereodefined alkenes. The majority of conventional methods utilize noble and toxic metal catalysts. This study concerns a simple catalyst comprised of the commercial chemicals iron(II) acetylacetonate and diisobutylaluminum hydride, which enables the Z-selective semihydrogenation of alkynes under near ambient conditions (1-3 bar H2 , 30 °C, 5 mol % [Fe]). Neither an elaborate catalyst preparation nor addition of ligands is required. Mechanistic studies (kinetic poisoning, X-ray absorption spectroscopy, TEM) strongly indicate the operation of small iron clusters and particle catalysts.
Collapse
Affiliation(s)
- Bernhard J Gregori
- Dept. of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146, Hamburg, Germany
| | - Felix Schwarzhuber
- Dept. of Physics, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Simon Pöllath
- Dept. of Physics, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Josef Zweck
- Dept. of Physics, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Lorena Fritsch
- Institute of Inorganic Chemistry and Center for Sustainable Systems Design (CSSD), University of Paderborn, Warburger Straße 100, 33098, Paderborn, Germany
| | - Roland Schoch
- Institute of Inorganic Chemistry and Center for Sustainable Systems Design (CSSD), University of Paderborn, Warburger Straße 100, 33098, Paderborn, Germany
| | - Matthias Bauer
- Institute of Inorganic Chemistry and Center for Sustainable Systems Design (CSSD), University of Paderborn, Warburger Straße 100, 33098, Paderborn, Germany
| | | |
Collapse
|
25
|
Sandl S, Maier TM, van Leest NP, Kröncke S, Chakraborty U, Demeshko S, Koszinowski K, de Bruin B, Meyer F, Bodensteiner M, Herrmann C, Wolf R, Jacobi von Wangelin A. Cobalt-Catalyzed Hydrogenations via Olefin Cobaltate and Hydride Intermediates. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01584] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastian Sandl
- Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146 Hamburg, Germany
| | - Thomas M. Maier
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Nicolaas P. van Leest
- van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Susanne Kröncke
- Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146 Hamburg, Germany
| | - Uttam Chakraborty
- Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146 Hamburg, Germany
| | - Serhiy Demeshko
- Institute of Inorganic Chemistry, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Konrad Koszinowski
- Institute of Organic and Biomolecular Chemistry, Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany
| | - Bas de Bruin
- van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Franc Meyer
- Institute of Inorganic Chemistry, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Michael Bodensteiner
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Carmen Herrmann
- Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146 Hamburg, Germany
| | - Robert Wolf
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | | |
Collapse
|
26
|
Mirzaei A, Peng XS, Wong HNC. PtCl 2-Catalyzed Cycloisomerization of 1,8-Enynes: Synthesis of Tetrahydropyridine Species. Org Lett 2019; 21:3795-3798. [PMID: 31042044 DOI: 10.1021/acs.orglett.9b01250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The cycloisomerization of 1,8-enynes in the presence of platinum(II) chloride was developed to generate bicyclic nitrogen-containing heterocycle species via 6- endo-dig cyclization and [3,3]-sigmatropic rearrangement in acceptable to good yields. The related control experiments and preliminary mechanistic studies indicate a plausible mechanism involving 1,6- endo-dig aminoplatination of the alkyne and allylic [3,3]-sigmatropic rearrangement with total inversion of the allylic moiety.
Collapse
Affiliation(s)
- Anvar Mirzaei
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong SAR, China
| | - Xiao-Shui Peng
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong SAR, China.,Shenzhen Center of Novel Functional Molecules, Shenzhen Research Institute , The Chinese University of Hong Kong , No.10, Second Yuexing Road , Shenzhen 518507 , P.R. China
| | - Henry N C Wong
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin , New Territories , Hong Kong SAR, China.,Shenzhen Center of Novel Functional Molecules, Shenzhen Research Institute , The Chinese University of Hong Kong , No.10, Second Yuexing Road , Shenzhen 518507 , P.R. China
| |
Collapse
|
27
|
Chakraborty U, Demeshko S, Meyer F, Jacobi von Wangelin A. Synthesis and Reactivity of an Early-Transition-Metal Alkynyl Cubane Mn 4
C 4
Cluster. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Uttam Chakraborty
- Department of Chemistry; University of Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| | - Serhiy Demeshko
- Institute of Inorganic Chemistry; University of Göttingen; Tammannstrasse 2 37077 Göttingen Germany
| | - Franc Meyer
- Institute of Inorganic Chemistry; University of Göttingen; Tammannstrasse 2 37077 Göttingen Germany
| | - Axel Jacobi von Wangelin
- Department of Chemistry; University of Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| |
Collapse
|
28
|
Chakraborty U, Demeshko S, Meyer F, Jacobi von Wangelin A. Synthesis and Reactivity of an Early-Transition-Metal Alkynyl Cubane Mn 4 C 4 Cluster. Angew Chem Int Ed Engl 2019; 58:3466-3470. [PMID: 30632661 DOI: 10.1002/anie.201812529] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Indexed: 12/20/2022]
Abstract
While the coordination chemistry of monometallic complexes and the surface properties of extended metal particles are well understood, the control of metal nanocluster formation has remained challenging. The isolation of discrete metal clusters provides an especially rare snapshot at the nanoscale of cluster growth. The synthesis and full characterization of the first early-transition-metal alkynyl cubane and the first μ3 -alkynyl Mn3 motif are reported.
Collapse
Affiliation(s)
- Uttam Chakraborty
- Department of Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany
| | - Serhiy Demeshko
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Franc Meyer
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Axel Jacobi von Wangelin
- Department of Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany
| |
Collapse
|
29
|
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: 28] [Impact Index Per Article: 5.6] [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.
Collapse
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
| |
Collapse
|
30
|
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: 1.6] [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.
Collapse
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 . ;
| |
Collapse
|
31
|
Shen L, Zhao Y, Luo Q, Li QS, Liu B, Redshaw C, Wu B, Yang XJ. Cyclotrimerization of alkynes catalyzed by a self-supported cyclic tri-nuclear nickel(0) complex with α-diimine ligands. Dalton Trans 2019; 48:4643-4649. [DOI: 10.1039/c9dt00819e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cyclic tri-nickel(0) complex [{Ni(μ-LMe-2,4)}3] (LMe-2,4 = [(2,4-Me2C6H3)NC(Me)]2) self-supported by the α-diimines catalyzes cyclotrimerization of alkynes to form substituted benzenes.
Collapse
Affiliation(s)
- Lingyi Shen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Yanxia Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Qiong Luo
- Center for Computational Quantum Chemistry
- South China Normal University
- Guangzhou 510631
- China
| | - Qian-Shu Li
- Center for Computational Quantum Chemistry
- South China Normal University
- Guangzhou 510631
- China
| | - Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Carl Redshaw
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Xiao-Juan Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| |
Collapse
|
32
|
Tejedor D, Díaz-Díaz A, Diana-Rivero R, Delgado-Hernández S, García-Tellado F. Synthesis and Utility of 2,2-Dimethyl-2 H-pyrans: Dienes for Sequential Diels-Alder/Retro-Diels-Alder Reactions. Org Lett 2018; 20:7987-7990. [PMID: 30525705 DOI: 10.1021/acs.orglett.8b03558] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The practical use of 2,2-dimethyl-2 H-pyrans as electron-rich dienes in sequential Diels-Alder/retro-Diels-Alder (DA/rDA) domino processes to generate aromatic platforms has been demonstrated. Different polysubstituted alkyl 2-naphthoates have been synthesized by the DA/rDA reaction of benzynes and 2,2-dimethyl-2 H-pyrans. The use of other activated alkynes allows the access of substituted alkyl benzoate derivatives.
Collapse
Affiliation(s)
- David Tejedor
- Instituto de Productos Naturales y Agrobiología , Consejo Superior de Investigaciones Científicas , Avda. Astrofísico Francisco Sánchez 3 , 38206 La Laguna , Canary Islands , Spain
| | - Abián Díaz-Díaz
- Instituto de Productos Naturales y Agrobiología , Consejo Superior de Investigaciones Científicas , Avda. Astrofísico Francisco Sánchez 3 , 38206 La Laguna , Canary Islands , Spain
| | - Raquel Diana-Rivero
- Instituto de Productos Naturales y Agrobiología , Consejo Superior de Investigaciones Científicas , Avda. Astrofísico Francisco Sánchez 3 , 38206 La Laguna , Canary Islands , Spain
| | - Samuel Delgado-Hernández
- Instituto de Productos Naturales y Agrobiología , Consejo Superior de Investigaciones Científicas , Avda. Astrofísico Francisco Sánchez 3 , 38206 La Laguna , Canary Islands , Spain
| | - Fernando García-Tellado
- Instituto de Productos Naturales y Agrobiología , Consejo Superior de Investigaciones Científicas , Avda. Astrofísico Francisco Sánchez 3 , 38206 La Laguna , Canary Islands , Spain
| |
Collapse
|
33
|
Okamoto S, Yamada T, Tanabe YK, Sakai M. Alkyne [2 + 2 + 2] Cyclotrimerization Catalyzed by a Low-Valent Titanium Reagent Derived from CpTiX3 (X = Cl, O-i-Pr), Me3SiCl, and Mg or Zn. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00678] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sentaro Okamoto
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Takeshi Yamada
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Yu-ki Tanabe
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Masaki Sakai
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| |
Collapse
|
34
|
Chakraborty U, Reyes‐Rodriguez E, Demeshko S, Meyer F, Jacobi von Wangelin A. A Manganese Nanosheet: New Cluster Topology and Catalysis. Angew Chem Int Ed Engl 2018; 57:4970-4975. [PMID: 29436771 PMCID: PMC5969092 DOI: 10.1002/anie.201800079] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 02/05/2018] [Indexed: 01/12/2023]
Abstract
While the coordination chemistry of monometallic complexes and the surface characteristics of larger metal particles are well understood, preparations of molecular metallic nanoclusters remain a great challenge. Discrete planar metal clusters constitute nanoscale snapshots of cluster growth but are especially rare owing to the strong preference for three-dimensional structures and rapid aggregation or decomposition. A simple ligand-exchange procedure has led to the formation of a novel heteroleptic Mn6 nanocluster that crystallized in an unprecedented flat-chair topology and exhibited unique magnetic and catalytic properties. Magnetic susceptibility studies documented strong electronic communication between the manganese ions. Reductive activation of the molecular Mn6 cluster enabled catalytic hydrogenations of alkenes, alkynes, and imines.
Collapse
Affiliation(s)
- Uttam Chakraborty
- Department of ChemistryUniversity ofRegensburgGermany
- Department of ChemistryUniversity of HamburgMartin Luther King Pl. 620146HamburgGermany
| | | | - Serhiy Demeshko
- University of GöttingenInstitute of Inorganic ChemistryTammannstraße 437077GöttingenGermany
| | - Franc Meyer
- University of GöttingenInstitute of Inorganic ChemistryTammannstraße 437077GöttingenGermany
| | - Axel Jacobi von Wangelin
- Department of ChemistryUniversity ofRegensburgGermany
- Department of ChemistryUniversity of HamburgMartin Luther King Pl. 620146HamburgGermany
| |
Collapse
|
35
|
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: 4.3] [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
| |
Collapse
|
36
|
Chakraborty U, Reyes-Rodriguez E, Demeshko S, Meyer F, Jacobi von Wangelin A. A Manganese Nanosheet: New Cluster Topology and Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800079] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Uttam Chakraborty
- Department of Chemistry; University of; Regensburg Germany
- Department of Chemistry; University of Hamburg; Martin Luther King Pl. 6 20146 Hamburg Germany
| | | | - Serhiy Demeshko
- University of Göttingen; Institute of Inorganic Chemistry; Tammannstraße 4 37077 Göttingen Germany
| | - Franc Meyer
- University of Göttingen; Institute of Inorganic Chemistry; Tammannstraße 4 37077 Göttingen Germany
| | - Axel Jacobi von Wangelin
- Department of Chemistry; University of; Regensburg Germany
- Department of Chemistry; University of Hamburg; Martin Luther King Pl. 6 20146 Hamburg Germany
| |
Collapse
|
37
|
Sugahara T, Guo JD, Sasamori T, Nagase S, Tokitoh N. Regioselective Cyclotrimerization of Terminal Alkynes Using a Digermyne. Angew Chem Int Ed Engl 2018; 57:3499-3503. [DOI: 10.1002/anie.201801222] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Tomohiro Sugahara
- Institute for Chemical Research; Kyoto University; Gokasho Uji Kyoto 611-0011 Japan
| | - Jing-Dong Guo
- Institute for Chemical Research; Kyoto University; Gokasho Uji Kyoto 611-0011 Japan
| | - Takahiro Sasamori
- Graduate School of Natural Sciences; Nagoya City University, Yamanohata 1, Mizuho-cho; Mizuho-ku Nagoya Aichi 467-8501 Japan
| | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry; Kyoto University; Sakyo-ku Kyoto 606-8103 Japan
| | - Norihiro Tokitoh
- Institute for Chemical Research; Kyoto University; Gokasho Uji Kyoto 611-0011 Japan
| |
Collapse
|
38
|
Sugahara T, Guo JD, Sasamori T, Nagase S, Tokitoh N. Regioselective Cyclotrimerization of Terminal Alkynes Using a Digermyne. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801222] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tomohiro Sugahara
- Institute for Chemical Research; Kyoto University; Gokasho Uji Kyoto 611-0011 Japan
| | - Jing-Dong Guo
- Institute for Chemical Research; Kyoto University; Gokasho Uji Kyoto 611-0011 Japan
| | - Takahiro Sasamori
- Graduate School of Natural Sciences; Nagoya City University, Yamanohata 1, Mizuho-cho; Mizuho-ku Nagoya Aichi 467-8501 Japan
| | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry; Kyoto University; Sakyo-ku Kyoto 606-8103 Japan
| | - Norihiro Tokitoh
- Institute for Chemical Research; Kyoto University; Gokasho Uji Kyoto 611-0011 Japan
| |
Collapse
|
39
|
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: 1.2] [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.![]()
Collapse
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
| |
Collapse
|
40
|
Siemiaszko G, Six Y. Can the Ti(OiPr) 4/ nBuLi combination of reagents function as a catalyst for [2+2+2] alkyne cyclotrimerisation reactions? NEW J CHEM 2018. [DOI: 10.1039/c8nj04931a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Catalysis of the cyclotrimerisation of alkynes with the Ti(OiPr)4/nBuLi system was studied, leading to the development of a particularly convenient and reliable protocol.
Collapse
Affiliation(s)
- Gabriela Siemiaszko
- Laboratoire de Synthèse Organique (LSO)
- UMR 7652 CNRS/ENSTA/École Polytechnique
- Université Paris-Saclay
- 91128 Palaiseau Cedex
- France
| | - Yvan Six
- Laboratoire de Synthèse Organique (LSO)
- UMR 7652 CNRS/ENSTA/École Polytechnique
- Université Paris-Saclay
- 91128 Palaiseau Cedex
- France
| |
Collapse
|
41
|
Chen J, Xu X, He Z, Qin H, Sun W, Fan B. Nickel/Zinc Iodide Co-catalytic Asymmetric [2+2] Cycloaddition Reactions of Azabenzonorbornadienes with Terminal Alkynes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701133] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jingchao Chen
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Xin Xu
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Zhenxiu He
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Hongyu Qin
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Weiqing Sun
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Baomin Fan
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
- Key Laboratory of Chemistry in Ethnic Medicinal Resources; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| |
Collapse
|
42
|
Affiliation(s)
- Johannes Teske
- Institut für Organische Chemie; Universität Stuttgart; Pfaffenwaldring 55, DE- 70569 Stuttgart Germany
| | - Bernd Plietker
- Institut für Organische Chemie; Universität Stuttgart; Pfaffenwaldring 55, DE- 70569 Stuttgart Germany
| |
Collapse
|