1
|
Banerjee A, Creek AE, Malkhasian AYS, Joseph AM, Lowes KC, Brennessel WW, Omlor A, Schünemann V, Singh P, Jackson TA, Chavez FA. A structural and functional model for alkene dioxygenases. J Inorg Biochem 2024; 262:112718. [PMID: 39243419 DOI: 10.1016/j.jinorgbio.2024.112718] [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: 06/11/2024] [Revised: 08/28/2024] [Accepted: 08/29/2024] [Indexed: 09/09/2024]
Abstract
In this article, we report sterically-controlled iron sites based on non-chelating bulky imidazole ligands. Adding 6 equiv. of 1,2-dimethylimidazole (1,2-Me2Im) to Fe(OTf)2⋅2CH3CN affords the first example of a 5-coordinate imidazole‑iron complex ([Fe(1,2-Me2Im)5](OTf)2, 1). The structure is distorted square pyramidal (τ5 = 0.41). When an iPr group is substituted for the methyl group at the 2-position on the imidazole (2-iPr-1-MeIm), the 14-electron complex ([Fe(2-iPr-1-MeIm)4](OTf)2, 2) is obtained. This complex exhibits slightly distorted tetrahedral geometry (τ'4 = 0.93) with four N-donors and serves as a 4-His iron structural model complex for carotenoid cleavage dioxygenases (CCD). The electronic structure of 1 and 2 were characterized by Mössbauer spectroscopy. Reactions of 1 and 2 with model olefin substrates (1-R-4-(1-methoxyprop-1-en-2-yl)benzene; R = Me or Br) in the presence of oxygen result in olefin cleavage yielding ketone and aldehyde products, although 2 yields more products than 1. Support for a proposed reaction mechanism for 2 is offered from Density Functional Theory (DFT) calculations.
Collapse
Affiliation(s)
- Atanu Banerjee
- Dr. K. C. Patel R & D Centre, Charotar University of Science and Technology (CHARUSAT), 388421 Anand, Gujarat, India
| | - Allison E Creek
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | | | - Annette M Joseph
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | - Korine C Lowes
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | | | - Andreas Omlor
- Department of Physics, University of Kaiserslautern, D-67663 Kaiserslautern, Germany
| | - Volker Schünemann
- Department of Physics, University of Kaiserslautern, D-67663 Kaiserslautern, Germany
| | - Priya Singh
- Department of Chemistry and Center for Environmentally Beneficial Catalysis, The University of Kansas, KS 66045, USA
| | - Timothy A Jackson
- Department of Chemistry and Center for Environmentally Beneficial Catalysis, The University of Kansas, KS 66045, USA
| | - Ferman A Chavez
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA.
| |
Collapse
|
2
|
Das A, Mohit, Thomas KRJ. Donor-Acceptor Covalent Organic Frameworks as a Heterogeneous Photoredox Catalyst for Scissoring Alkenes to Carbonyl Constituents. J Org Chem 2023; 88:14065-14077. [PMID: 37695568 DOI: 10.1021/acs.joc.3c01594] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The conversion of alkenes to carbonyl constituents via the cleavage of the C═C bond is unique due to its biological and pharmacological significance. Though a number of oxidative C═C cleavage protocols have been demonstrated for terminal and electron-rich alkene systems, none of them were optimized for electron-deficient and conjugated alkenes. In this work, a covalent organic framework containing triphenylamine and triazine units was revealed to cleave the C═C bond of alkenes under very mild conditions involving visible light irradiation due to its photoredox property. The alkenes can be conveniently broken across the double bond to their constituent carbonyl derivatives on light irradiation in the presence of air and the covalent organic framework photocatalyst. This protocol is applicable for a wide range of alkenes in an aqueous acetonitrile medium with high functional group tolerance and regioselectivity. Though the electron-deficient alkenes required tetramethylethylene diamine as a sacrificial donor, the electron-rich alkenes do not demand any additives.
Collapse
Affiliation(s)
- Anupam Das
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Mohit
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - K R Justin Thomas
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| |
Collapse
|
3
|
Ni Y, Wang Y, Tabor AB, Ward JM, Hailes HC. The use of tyrosinases in a chemoenzymatic cascade as a peptide ligation strategy. RSC Chem Biol 2023; 4:132-137. [PMID: 36794017 PMCID: PMC9906322 DOI: 10.1039/d2cb00237j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Peptides play many key roles in biological systems and numerous methods have been developed to generate both natural and unnatural peptides. However, straightforward, reliable coupling methods that can be achieved under mild reactions conditions are still sought after. In this work, a new N-terminal tyrosine-containing peptide ligation method with aldehydes, utilising a Pictet-Spengler reaction is described. In a key step, tyrosinase enzymes have been used to convert l-tyrosine to l-3,4-dihydroxyphenyl alanine (l-DOPA) residues, generating suitable functionality for the Pictet-Spengler coupling. This new chemoenzymatic coupling strategy can be used for fluorescent-tagging and peptide ligation purposes.
Collapse
Affiliation(s)
- Yeke Ni
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
| | - Yu Wang
- Department of Chemistry, University College London 20 Gordon Street London WC1H 0AJ UK
| | - Alethea B. Tabor
- Department of Chemistry, University College London20 Gordon StreetLondonWC1H 0AJUK
| | - John M. Ward
- Department of Biochemical Engineering, University College LondonBernard Katz Building, Gower StreetLondon WC1E 6BTUK
| | - Helen C. Hailes
- Department of Chemistry, University College London20 Gordon StreetLondonWC1H 0AJUK
| |
Collapse
|
4
|
Catalysis and inhibition of ester hydrolysis by encapsulation in micelles derived from designer surfactant TPGS-750-M. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
5
|
One‐Pot Transition‐Metal‐Free Synthesis of Polysubstituted Fused Benzene Derivatives from Methyl Enol Ethers and Alkynes. ChemistrySelect 2022. [DOI: 10.1002/slct.202201921] [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]
|
6
|
Chen YX, He JT, Wu MC, Liu ZL, Tang K, Xia PJ, Chen K, Xiang HY, Chen XQ, Yang H. Photochemical Organocatalytic Aerobic Cleavage of C═C Bonds Enabled by Charge-Transfer Complex Formation. Org Lett 2022; 24:3920-3925. [PMID: 35613702 DOI: 10.1021/acs.orglett.2c01192] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel visible-light-driven organocatalytic protocol to access aerobic oxidative cleavage of olefins, promoted by sodium benzene sulfinate, is described herein. An array of alkenes smoothly delivered the corresponding aldehydes and ketones under transition-metal-free conditions. Notably, α-halo-substituted styrenes proceeded with photoinduced oxidation to finally afford α-halo-acetophenones with halogen migration. Crucial to this oxidation was the formation of charge-transfer complexes between sodium benzene sulfinate with molecular O2 to ultimately deliver the carbonyl products.
Collapse
Affiliation(s)
- Yi-Xuan Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Jun-Tao He
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Mei-Chun Wu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China.,College of Chemistry and Chemical Engineering, Huaihua University, Huaihua 418008, Hunan, P.R. China
| | - Zhi-Lin Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Kai Tang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Peng-Ju Xia
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P.R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P.R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| |
Collapse
|
7
|
Aerobic oxidative cleavage and esterification of C C bonds catalyzed by iron-based nanocatalyst. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
8
|
SBA15-supported nano-ruthenium catalyst for the oxidative cleavage of alkenes to aldehydes under flow conditions. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
9
|
Huang Z, Guan R, Shanmugam M, Bennett EL, Robertson CM, Brookfield A, McInnes EJL, Xiao J. Oxidative Cleavage of Alkenes by O 2 with a Non-Heme Manganese Catalyst. J Am Chem Soc 2021; 143:10005-10013. [PMID: 34160220 PMCID: PMC8297864 DOI: 10.1021/jacs.1c05757] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
![]()
The oxidative cleavage
of C=C double bonds with molecular
oxygen to produce carbonyl compounds is an important transformation
in chemical and pharmaceutical synthesis. In nature, enzymes containing
the first-row transition metals, particularly heme and non-heme iron-dependent
enzymes, readily activate O2 and oxidatively cleave C=C
bonds with exquisite precision under ambient conditions. The reaction
remains challenging for synthetic chemists, however. There are only
a small number of known synthetic metal catalysts that allow for the
oxidative cleavage of alkenes at an atmospheric pressure of O2, with very few known to catalyze the cleavage of nonactivated
alkenes. In this work, we describe a light-driven, Mn-catalyzed protocol
for the selective oxidation of alkenes to carbonyls under 1 atm of
O2. For the first time, aromatic as well as various nonactivated
aliphatic alkenes could be oxidized to afford ketones and aldehydes
under clean, mild conditions with a first row, biorelevant metal catalyst.
Moreover, the protocol shows a very good functional group tolerance.
Mechanistic investigation suggests that Mn–oxo species, including
an asymmetric, mixed-valent bis(μ-oxo)-Mn(III,IV) complex, are
involved in the oxidation, and the solvent methanol participates in
O2 activation that leads to the formation of the oxo species.
Collapse
Affiliation(s)
- Zhiliang Huang
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Renpeng Guan
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Muralidharan Shanmugam
- Department of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, U.K
| | - Elliot L Bennett
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Craig M Robertson
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Adam Brookfield
- Department of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, U.K
| | - Eric J L McInnes
- Department of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, U.K
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| |
Collapse
|
10
|
Ahmad SAZ, Jena TK, Khan FA. Alkyl Enol Ethers: Development in Intermolecular Organic Transformation. Chem Asian J 2021; 16:1685-1702. [PMID: 33979009 DOI: 10.1002/asia.202100277] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/27/2021] [Indexed: 01/03/2023]
Abstract
Alkyl enol ethers (AEE) are versatile synthetic intermediates with a unique reactivity pattern. This review article summarizes the synthesis of AEE as well as its reactivity and how enol ether undergoes intermolecular reactions for various bond formation, leading to the construction of several useful organic molecules. The synthetic applications of alkyl enol ethers towards intermolecular bond-forming reactions include metal-catalyzed reactions, cycloaddition and heterocycle formation as well as rwactions in the field of natural products synthesis. The achievement of these impressive transformations prove the countless synthetic potential of AEE. The main objective of this review is to bring attentiveness among synthetic chemists to show how AEE extensively can be used to react with both electrophiles as well as nucleophiles, thereby behaving as an ambiphilic reactant. We trust that the unique reactivity pattern of alkyl enol ethers and the fundamental mechanistic idea can attract chemists in AEE chemistry. Exclusively, intermolecular reactions of AEE with other functionalized moieties have not been reviewed to the best of our knowledge.
Collapse
Affiliation(s)
- Sarwat Asma Ziya Ahmad
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502285, India
| | - Tapan Kumar Jena
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502285, India
| | - Faiz Ahmed Khan
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502285, India
| |
Collapse
|
11
|
Muzart J. Progress in the synthesis of aldehydes from Pd-catalyzed Wacker-type reactions of terminal olefins. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
12
|
Yu T, Guo M, Wen S, Zhao R, Wang J, Sun Y, Liu Q, Zhou H. Poly(ethylene glycol) dimethyl ether mediated oxidative scission of aromatic olefins to carbonyl compounds by molecular oxygen. RSC Adv 2021; 11:13848-13852. [PMID: 35423908 PMCID: PMC8697527 DOI: 10.1039/d1ra02007b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 04/05/2021] [Indexed: 12/16/2022] Open
Abstract
A simple, and practical oxidative scission of aromatic olefins to carbonyl compounds using O2 as the sole oxidant with poly(ethylene glycol) dimethyl ether as a benign solvent has been developed. A wide range of monosubstituted, gem-disubstituted, 1,2-disubstituted, trisubstituted and tetrasubstituted aromatic olefins was successfully converted into the corresponding aldehydes and ketones in excellent yields even with gram–scale reaction. Some control experiments were also conducted to support a possible reaction pathway. A simple and practical O2 oxidized scission of monosubstituted, gem- and 1,2-disubstituted, trisubstituted and tetrasubstituted aromatic olefins to aldehydes and ketones in PEGDME has been developed.![]()
Collapse
Affiliation(s)
- Tao Yu
- Research Center of Green Pharmaceutical Technology and Process, Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang 443002 China
| | - Mingqing Guo
- Research Center of Green Pharmaceutical Technology and Process, Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang 443002 China
| | - Simiaomiao Wen
- Research Center of Green Pharmaceutical Technology and Process, Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang 443002 China
| | - Rongrong Zhao
- Research Center of Green Pharmaceutical Technology and Process, Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang 443002 China
| | - Jinlong Wang
- Research Center of Green Pharmaceutical Technology and Process, Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang 443002 China
| | - Yanli Sun
- Research Center of Green Pharmaceutical Technology and Process, Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang 443002 China
| | - Qixing Liu
- Research Center of Green Pharmaceutical Technology and Process, Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang 443002 China
| | - Haifeng Zhou
- Research Center of Green Pharmaceutical Technology and Process, Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University Yichang 443002 China
| |
Collapse
|
13
|
Buntasana S, Seankongsuk P, Vilaivan T, Padungros P. Household Ozone Disinfector as An Alternative Ozone Generator for Ozonolysis of Alkenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Supanat Buntasana
- Green Chemistry for Fine Chemical Productions STAR Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Pattarakiat Seankongsuk
- Organic Synthesis Research Unit Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Panuwat Padungros
- Green Chemistry for Fine Chemical Productions STAR Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| |
Collapse
|
14
|
Ou J, He S, Wang W, Tan H, Liu K. Highly efficient oxidative cleavage of olefins with O2 under catalyst-, initiator- and additive-free conditions. Org Chem Front 2021. [DOI: 10.1039/d1qo00175b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Without employing any external catalyst, initiator and additives, an efficient and eco-friendly protocol has been developed for the synthesis of carbonyl compound via 1,4-dioxane- promoted oxidation of olefins with atmospheric O2 as the sole oxidant.
Collapse
Affiliation(s)
- Jinhua Ou
- Department of Material and Chemical Engineering
- Hunan Institute of Technology
- Hengyang
- China
- Key Laboratory of Chemo/Biosensing and Chemometrics
| | - Saiyu He
- Department of Material and Chemical Engineering
- Hunan Institute of Technology
- Hengyang
- China
| | - Wei Wang
- Department of Material and Chemical Engineering
- Hunan Institute of Technology
- Hengyang
- China
| | - Hong Tan
- Department of Material and Chemical Engineering
- Hunan Institute of Technology
- Hengyang
- China
| | - Kaijian Liu
- Hunan Provincial Engineering Research Center for Ginkgo biloba
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
| |
Collapse
|
15
|
Fan Z, Feng J, Hou Y, Rao M, Cheng J. Copper-Catalyzed Aerobic Cyclization of β,γ-Unsaturated Hydrazones with Concomitant C═C Bond Cleavage. Org Lett 2020; 22:7981-7985. [PMID: 33021381 DOI: 10.1021/acs.orglett.0c02911] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A Cu-catalyzed aerobic oxidative cyclization of β,γ-unsaturated hydrazones for the preparation of pyrazole derivatives has been developed. The hydrazonyl radical promoted the cyclization, along with a concomitant C═C bond cleavage of β,γ-unsaturated hydrazones. This process has been verified via several control experiments, including a radical-trapping study, an 18O-labeling method, and the identification of the possible byproducts. The advantages of this reaction include operational simplicity, a broad reaction scope, and a mild selective reaction process.
Collapse
Affiliation(s)
- Zhenwei Fan
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Jiahao Feng
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Yuchen Hou
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Min Rao
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Jiajia Cheng
- State Key Laboratory of Photocatalysis on Energy and Environment, Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350116, China
| |
Collapse
|
16
|
Du L, Wang Z, Wu J. Iodobenzene-catalyzed oxidative cleavage of olefins to carbonyl compounds. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152204] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
17
|
Hadian-Dehkordi L, Rezaei A, Ramazani A, Jaymand M, Samadian H, Zheng L, Deng X, Zheng H. Amphiphilic Carbon Quantum Dots as a Bridge to a Pseudohomogeneous Catalyst for Selective Oxidative Cracking of Alkenes to Aldehydes: A Nonmetallic Oxidation System. ACS APPLIED MATERIALS & INTERFACES 2020; 12:31360-31371. [PMID: 32598137 DOI: 10.1021/acsami.0c05025] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The oxidative cleavage of alkenes to the corresponding aldehydes using new amphiphilic carbon quantum dots (A-CQDs) as a pseudohomogeneous carbocatalyst is achieved for the first time through green and sustainable chemical processes. In this work, we successfully design a recyclable pseudohomogeneous catalyst based on A-CQDs, which is decorated with 1-aminopropyl-3-methyl-imidazolium chloride and stearic acid. The functionalization is conducted to introduce a hydrophilic/hydrophobic functionality on the surface of the catalyst to achieve high catalyst availability in polar and nonpolar media with the green goal of eliminating organic (co)solvents and additives. This amphiphilic carbocatalyst provides high mass transferability to the biphasic system, which is beneficial to promoting the oxidative cracking of a variety of olefins into corresponding aldehydes with a substrate/A-CQD ratio of 150. Around 87% of the substrates are converted to the related aldehydes using the carbocatalyst in the presence of H2O2, in pure water, without using a phase-transfer catalyst or any additives and organic solvents, which is comparable with the current metal-based cleavage systems. Surprisingly, A-CQDs exhibit high catalytic activity for the scission of electron-deficient C═C bond of coumarin derivatives, accompanied by the cleavage of C-O bonds to produce the corresponding salicylaldehyde derivatives without overoxidation to acid. As a brief conclusion, A-CQDs exhibit high conversion efficiency without significant loss of activity even after six catalytic cycles. The conversion of alkenes into aldehydes is fast and high-throughput without overoxidation to acids and is accompanied by excellent solubility and stability in various solvents. Moreover, the product and the catalyst are recoverable from the reaction medium by simple extraction. So, this pseudohomogeneous carbocatalyst promises new horizons in imminent "catalytic age". All in all, this paper provides a significant and novel advancement in carbocatalyst chemistry.
Collapse
Affiliation(s)
- Leila Hadian-Dehkordi
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67145-1673, Iran
| | - Aram Rezaei
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67145-1673, Iran
| | - Ali Ramazani
- Department of Chemistry, University of Zanjan, Zanjan 45371-38791, Iran
| | - Mehdi Jaymand
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67145-1673, Iran
| | - Hadi Samadian
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67145-1673, Iran
| | - Lingxia Zheng
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou 310032, China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
| | - Xiaolei Deng
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou 310032, China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
| | - Huajun Zheng
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou 310032, China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
| |
Collapse
|
18
|
Liu KJ, Deng JH, Zeng TY, Chen XJ, Huang Y, Cao Z, Lin YW, He WM. 1,2-Diethoxyethane catalyzed oxidative cleavage of gem-disubstituted aromatic alkenes to ketones under minimal solvent conditions. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.01.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
19
|
|
20
|
Liu H, Cai C, Ding Y, Chen J, Liu B, Xia Y. Cobalt-Catalyzed E-Selective Isomerization of Alkenes with a Phosphine-Amido-Oxazoline Ligand. ACS OMEGA 2020; 5:11655-11670. [PMID: 32478256 PMCID: PMC7254813 DOI: 10.1021/acsomega.0c00951] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
An efficient method to access (E)-trisubstituted alkenes is reported via cobalt-catalyzed isomerization of 1,1-disubstituted alkenes using a phosphine-amido-oxazoline ligand. The reaction could also convert mono- and 1,2-disubstituted alkenes to (E)-internal alkenes with benzylic selectivity. This protocol is atom-economy and operationally simple and uses readily available starting materials with good functional tolerance. This catalytic system could be scaled up to gram scale smoothly with a catalyst loading of 0.1 mol %.
Collapse
|
21
|
Bhowmik A, Fernandes RA. Iron(III)/O 2-Mediated Regioselective Oxidative Cleavage of 1-Arylbutadienes to Cinnamaldehydes. Org Lett 2019; 21:9203-9207. [PMID: 31693382 DOI: 10.1021/acs.orglett.9b03562] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A simple, efficient, and environmentally benevolent regioselective oxidative cleavage of 1-arylbutadienes to cinnamaldehydes mediated by iron(III) sulfate/O2 has been developed. The reaction offered good yields and excellent regioselectivity and showed good functional group tolerance (31 examples). The method is important, as few reports with limited substrate scope are available for such excellent oxidative cleavage of conjugated dienes.
Collapse
Affiliation(s)
- Amit Bhowmik
- Department of Chemistry , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , Maharashtra , India
| | - Rodney A Fernandes
- Department of Chemistry , Indian Institute of Technology Bombay , Powai, Mumbai 400076 , Maharashtra , India
| |
Collapse
|
22
|
Jena TK, Khan FA. Direct α-Benzylation of Methyl Enol Ethers with Activated Benzyl Alcohols: Its Rearrangement and Access to (±)-Tetrahydronyasol, Propterol A, and 1,3-Diarylpropane. J Org Chem 2019; 84:14270-14280. [PMID: 31545892 DOI: 10.1021/acs.joc.9b02064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report a one-pot Lewis acid mediated synthesis of bi- and triarylpropanal derivatives and their corresponding isomeric ketones from aromatic enol ethers. This transformation takes place via nucleophilic attack of enol ethers to electron-rich benzyl alcohols. The substrate scope of this indicates that it might proceed via quinomethoxy methide as a key intermediate leading to propanal derivatives, and their Wagner-Meerwein rearrangement afforded isomeric ketones. Further, this methodology was applied for the synthesis of (±)-tetrahydronyasol, propterol A, and 1,3-diarylpropane.
Collapse
Affiliation(s)
- Tapan Kumar Jena
- Department of Chemistry , Indian Institute of Technology Hyderabad , Kandi, Sangareddy , Telangana 502 285 , India
| | - Faiz Ahmed Khan
- Department of Chemistry , Indian Institute of Technology Hyderabad , Kandi, Sangareddy , Telangana 502 285 , India
| |
Collapse
|
23
|
Gao M, Gan Y, Xu B. From Alkenes to Isoxazolines via Copper-Mediated Alkene Cleavage and Dipolar Cycloaddition. Org Lett 2019; 21:7435-7439. [PMID: 31509424 DOI: 10.1021/acs.orglett.9b02748] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An unprecedented copper-mediated anion transformation is reported, along with selective C═C double bond cleavage and dipolar cycloaddition reaction from simple alkenes and inexpensive copper nitrate. Various transformations demonstrate the generality of this method. Further mechanistic investigation indicates a novel ionic pathway for alkene cleavage and highlights the coeffect of iodide and boric acid as additives on the inhibition of well-documented competitive nitration byproducts.
Collapse
Affiliation(s)
- Mingchun Gao
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China
| | - Yuansheng Gan
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China
| | - Bin Xu
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , Shanghai 200032 , China
| |
Collapse
|
24
|
Lee NR, Cortes-Clerget M, Wood AB, Lippincott DJ, Pang H, Moghadam FA, Gallou F, Lipshutz BH. Coolade. A Low-Foaming Surfactant for Organic Synthesis in Water. CHEMSUSCHEM 2019; 12:3159-3165. [PMID: 30889298 DOI: 10.1002/cssc.201900369] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Indexed: 06/09/2023]
Abstract
Several types of reduction reactions in organic synthesis are performed under aqueous micellar-catalysis conditions (in water at ambient temperature), which produce a significant volume of foam owing to the combination of the surfactant and the presence of gas evolution. The newly engineered surfactant "Coolade" minimizes this important technical issue owing to its low-foaming properties. Coolade is the latest in a series of designer surfactants specifically tailored to enable organic synthesis in water. This study reports the synthesis of this new surfactant along with its applications to gas-involving reactions.
Collapse
Affiliation(s)
- Nicholas R Lee
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA
| | - Margery Cortes-Clerget
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA
| | - Alex B Wood
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA
| | - Daniel J Lippincott
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA
| | - Haobo Pang
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA
| | - Farbod A Moghadam
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA
| | | | - Bruce H Lipshutz
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA
| |
Collapse
|
25
|
Bora PP, Bihani M, Plummer S, Gallou F, Handa S. Shielding Effect of Micelle for Highly Effective and Selective Monofluorination of Indoles in Water. CHEMSUSCHEM 2019; 12:3037-3042. [PMID: 30834700 DOI: 10.1002/cssc.201900316] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/28/2019] [Indexed: 05/12/2023]
Abstract
Highly selective direct monofluorination of indoles and arenes was developed through an approach that allows site-specific solubility of substrate and fluorine source in the micelle. This approach was highly selective for a broad range of substrates with excellent functional group tolerance. Differences in binding constant and solubility of indoles and arenes in the micelle allowed the fine-tuning of selectivity. Control experiments suggested a radical pathway and provided insight into the role of micelles of the environmentally benign amphiphile PS-750-M. Dynamic light scattering experiments strongly indicated the site-specific solubility of the substrate and fluorine source. The methodology was successfully adapted to gram scale, and the E-factor established from a recycle study indicated that the process is environmentally responsible and sustainable.
Collapse
Affiliation(s)
- Pranjal P Bora
- Department of Chemistry, University of Louisville, 2320 S. Brook St., Louisville, KY, 40292, USA
| | - Manisha Bihani
- Department of Chemistry, University of Louisville, 2320 S. Brook St., Louisville, KY, 40292, USA
| | - Scott Plummer
- Novartis Institutes for BioMedical Research, 250 Massachusetts Ave, Cambridge, MA, 02139, USA
| | | | - Sachin Handa
- Department of Chemistry, University of Louisville, 2320 S. Brook St., Louisville, KY, 40292, USA
| |
Collapse
|
26
|
Sivaguru P, Wang Z, Zanoni G, Bi X. Cleavage of carbon–carbon bonds by radical reactions. Chem Soc Rev 2019; 48:2615-2656. [DOI: 10.1039/c8cs00386f] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This review provides insights into the in situ generated radicals triggered carbon–carbon bond cleavage reactions.
Collapse
Affiliation(s)
- Paramasivam Sivaguru
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Northeast Normal University
- Changchun 130024
- China
| | - Zikun Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Northeast Normal University
- Changchun 130024
- China
| | | | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Northeast Normal University
- Changchun 130024
- China
| |
Collapse
|