1
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Zhu S, Huang W, Liu S, Yu R, Ma Y, Wang H, Zhang R, Liu B, Lan Y, Shen R. Synthesis of benzooxepane-fused cyclobutene derivatives via Pd-catalyzed cascade reactions of haloarenes and diynylic ethers. Chem Commun (Camb) 2024; 60:5707-5710. [PMID: 38738645 DOI: 10.1039/d4cc00999a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
A tandem palladium-catalyzed Sonogashira coupling, propargyl-allenyl isomerization, and [2+2] cycloaddition sequence between electron-deficient haloarenes and 1,8-diynylic ethers is developed. The reaction shows good functional tolerance and proceeds under mild conditions to provide a new profile of benzooxepane-fused cyclobutene derivatives in moderate to high yields with high selectivity. The reaction mechanism is validated both by experimental studies and DFT calculations.
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Affiliation(s)
- Shugao Zhu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
| | - Wenliang Huang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
| | - Shihan Liu
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China.
| | - Rongjing Yu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
| | - Yufeng Ma
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
| | - Hong Wang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
| | - Rui Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
| | - Bin Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, China.
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou 450001, China
| | - Ruwei Shen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211800, China
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2
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Zhu Y, Chen Q, Wang C, Xin Y, Wang L, Yi Y, Zhang Z, Tang Y, Wang Z. Side-chain engineering for high degradation performance of mandrel materials in ICF target fabrication. Phys Chem Chem Phys 2022; 24:25420-25425. [PMID: 36250547 DOI: 10.1039/d2cp03324k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The exploration of mandrel materials with superior degradation performance to the traditionally adopted hydrocarbon polymer of poly-α-methylstyrene (PAMS), has always been an important pursuit for fabricating high-quality inertial confinement fusion (ICF) targets. Here, we propose a method to enhance the degradation performance of mandrel material based on side-chain engineering. A series of hydrocarbon cyclic functional groups, including cyclopentane, cyclopentadiene, naphthalene and azulene, are used to replace the benzene ring on the side chain of PAMS to form new polymer structures. The results show that the degradation performance of structures can be largely regulated by different side chains. In particular, one of the naphthalene-substituted structures has similar properties to PAMS, but the required degradation condition is lower. Furthermore, the reaction rate calculations indicate that this structure is expected to be synthesized experimentally. This work provides a direction for side-chain engineering for research into the key technology of ICF target fabrication in the future.
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Affiliation(s)
- Yu Zhu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Qiang Chen
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China.
| | - Chaoyang Wang
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China.
| | - Yue Xin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Lu Wang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Yong Yi
- State Key Laboratory of Environmental-friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Zhanwen Zhang
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China.
| | - Yongjian Tang
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China.
- State Key Laboratory of Environmental-friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
| | - Zhigang Wang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
- College of Physics, Jilin University, Changchun 130012, China
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3
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Zhang K, Zheng H, Han Y, Cheng Y, Zhao X. On the Origins of Stereo- and Regio-Selectivities in the Formation of Fullerene-Fluorene Dyads. J Org Chem 2022; 87:4702-4711. [PMID: 35316058 DOI: 10.1021/acs.joc.1c03161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recently, a novel [2+2] cycloaddition between the classical Ih-C60 and a fluorenylideneallene complex has been achieved experimentally. In the fullerene-fluorene dyad product, stereo- and regio-selectivities were found in the experiment, but the reasons are still unknown. Our theoretical studies suggest that, based on a diradical pathway, the structural selectivity of the product strongly depends on the structural/electronic features of the fluorenylideneallene and C60 complexes. When the R1 group in fluorenylideneallene denotes the H atom, the E-type product is more stable than the Z-type one, whereas other bulkier R1 groups lead to the reverse due to their steric hindrance. The π orbital conjugation between the fluorenyl group and the Cβ═Cγ bond in fluorenylideneallene is the main reason for the high selectivity of β,γ-cycloaddition. Analyses of both frontier orbitals and spin density for the intermediate structure suggest a diradical pathway of the reaction between fluorenylideneallene and C60 and uncover a decisive role of the LUMO of C60 toward regio-selectivity, which conduces to a high selectivity of the (6,6)-addition product.
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Affiliation(s)
- KaiNi Zhang
- Institute for Chemical Physics, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China.,International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hong Zheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yanbo Han
- Institute for Chemical Physics, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xiang Zhao
- Institute for Chemical Physics, School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China
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4
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Wang J, Hao W, Tu S, Jiang B. Engaging
Yne‐Allenes
in Cycloaddition Reactions: Recent Developments. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100856] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jia‐Yin Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Wen‐Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Shu‐Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou 221116 P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University Xuzhou 221116 P. R. China
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5
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Zhu Y, Yang X, Yu F, Wang R, Chen Q, Zhang Z, Wang Z. Quantum tunneling of hydrogen atom transfer affects mandrel degradation in inertial confinement fusion target fabrication. iScience 2022; 25:103674. [PMID: 35024593 PMCID: PMC8733146 DOI: 10.1016/j.isci.2021.103674] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/16/2021] [Accepted: 12/17/2021] [Indexed: 12/05/2022] Open
Abstract
Poly-α-methylstyrene (PAMS) is considered as the preferred mandrel material, whose degradation is crucial for the fabrication of high-quality inertial confinement fusion (ICF) targets. Herein, we reveal that hydrogen atom transfer (HAT) during PAMS degradation, which is usually attributed to the thermal effect, unexpectedly exhibits a strong high-temperature tunneling effect. Specifically, although the energy barrier of the HAT reaction is only 10-2 magnitude different from depolymerization, the tunneling probability of the former can be 14-32 orders of magnitude greater than that of the latter. Furthermore, chain scission following HAT will lead to a variety of products other than monomers. Our work highlights that quantum tunneling may be an important source of uncertainty in PAMS degradation, which will provide a direction for the further development of key technology of target fabricating in ICF research and even the solution of plastic pollution.
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Affiliation(s)
- Yu Zhu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Xinrui Yang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Famin Yu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Rui Wang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Qiang Chen
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
| | - Zhanwen Zhang
- Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
| | - Zhigang Wang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
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6
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Joyce LM, Drew MA, Tague AJ, Thaima T, Gouranourimi A, Ariafard A, Pyne SG, Hyland C. A Rare Alder-ene Cycloisomerisation of 1,6-Allenynes. Chemistry 2021; 28:e202104022. [PMID: 34971450 DOI: 10.1002/chem.202104022] [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: 11/08/2021] [Indexed: 11/06/2022]
Abstract
Thermally induced cycloisomerization reactions of 1,6-allenynes gives α-methylene-γ-lactams via intramolecular Alder-ene reactions. The mechanism is supported by computational and deuterium labeling studies. This thermal, non-radical method enables the discovery of a hitherto unknown route that proceeds via a divergent mechanism distinct from the previous [2+2] cycloisomerization manifold.
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Affiliation(s)
- Liam M Joyce
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, Chemistry, AUSTRALIA
| | - Melanie A Drew
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, chemistry, AUSTRALIA
| | - Andrew J Tague
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, Chemistry, AUSTRALIA
| | - Thanaphat Thaima
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, chemistry, AUSTRALIA
| | | | | | - Stephen G Pyne
- University of Wollongong Faculty of Science: University of Wollongong Faculty of Science Medicine and Health, Chemistry, AUSTRALIA
| | - Christopher Hyland
- University of Wollongong, School of Chemistry, Northfields Avenue, 2522, Wollongong, AUSTRALIA
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7
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Vine LE, Reeves RD, Landwehr EM, Fernández I, Schomaker JM. Scope and Mechanistic Investigations of Pd-Catalyzed Coupling/Cyclization and Cycloisomerization of Allenyl Malonates. ACS Catal 2021; 11:9485-9494. [DOI: 10.1021/acscatal.1c01847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Logan E. Vine
- Department of Chemistry, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Ryan D. Reeves
- Department of Chemistry, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Eleanor M. Landwehr
- Department of Chemistry, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Israel Fernández
- Departamento de Orgánica I and Centro de Innovación en Química Avanzada (ORFEO−CINQA), Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Jennifer M. Schomaker
- Department of Chemistry, 1101 University Avenue, Madison, Wisconsin 53706, United States
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8
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Labadie N, Ramos Marchena JM, Medrán NS, Pellegrinet SC. Allenylboronic Acid Pinacol Ester: A Selective Partner for [4 + 2] Cycloadditions. Org Lett 2021; 23:5081-5085. [PMID: 34151574 DOI: 10.1021/acs.orglett.1c01609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have studied the reaction of allenylboronic acid pinacol ester with cyclopentadiene with experimental and computational methods. The reaction occurred efficiently with complete Diels-Alder periselectivity and regioselectivity at the proximal double bond. The concerted mechanism for the observed transformation was computed to be favored over competitive addition to the distal double bond, [3,3]-sigmatropic rearrangements, and stepwise radical mechanism. This unprecedented Diels-Alder reaction enables the construction of synthetically versatile boron-substituted cycloadducts.
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Affiliation(s)
- Natalia Labadie
- Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina
| | - Juan M Ramos Marchena
- Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina
| | - Noelia S Medrán
- Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina
| | - Silvina C Pellegrinet
- Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina
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9
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Le A, Lee D. Selectivity between an Alder–ene reaction and a [2 + 2] cycloaddition in the intramolecular reactions of allene-tethered arynes. Org Chem Front 2021. [DOI: 10.1039/d1qo00459j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Substituent-dependent reactivity and selectivity in the intramolecular reactions of arynes tethered with an allene are described.
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Affiliation(s)
- Anh Le
- Department of Chemistry
- University of Illinois at Chicago
- Chicago
- USA
| | - Daesung Lee
- Department of Chemistry
- University of Illinois at Chicago
- Chicago
- USA
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10
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Li J, Cui M, Tian R, Duan Z, Mathey F. Cycloadditions of 1-iminylphosphirane complexes with allenes. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.05.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Zhang K, Zhang Q, Wei D, Tian R, Duan Z. Hetero-Diels–Alder reactions of 2 H-phospholes with allenes: synthesis and functionalization of 6-methylene-1-phosphanorbornenes. Org Chem Front 2021. [DOI: 10.1039/d1qo00535a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phospha-Diels–Alder reaction between 2H-phospholes and arylallenes affords 6-methylene-1-phosphanorbornenes in high yields with excellent regioselectivity. Further functionalization provides a 1-phosphanorbornene modified PCH2CH2P skeleton.
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Affiliation(s)
- Keke Zhang
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
| | - Qiaoyu Zhang
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
| | - Donghui Wei
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
| | - Rongqiang Tian
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
| | - Zheng Duan
- College of Chemistry
- Green Catalysis Center
- International Phosphorus Laboratory
- International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province
- Zhengzhou University
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12
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Ni Q, Song X, Png CW, Zhang Y, Zhao Y. Access to substituted cyclobutenes by tandem [3,3]-sigmatropic rearrangement/[2 + 2] cycloaddition of dipropargylphosphonates under Ag/Co relay catalysis. Chem Sci 2020; 11:12329-12335. [PMID: 34094441 PMCID: PMC8162479 DOI: 10.1039/d0sc02972f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 10/16/2020] [Indexed: 11/21/2022] Open
Abstract
We present herein an unconventional tandem [3,3]-sigmatropic rearrangement/[2 + 2] cycloaddition of simple dipropargylphosphonates to deliver a range of bicyclic polysubstituted cyclobutenes and cyclobutanes under Ag/Co relay catalysis. An interesting switch from allene-allene to allene-alkyne cycloaddition was observed based on the substitution of the substrates, which further diversified the range of compounds accessible from this practical method. Significantly, preliminary biological screening of these new compounds identified promising candidates as suppressors of cellular proliferation.
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Affiliation(s)
- Qijian Ni
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 Anhui China
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Xiaoxiao Song
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu 241002 Anhui China
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Chin Wen Png
- Centre for Life Sciences, National University of Singapore #03-09, 28 Medical Drive 117456 Singapore
| | - Yongliang Zhang
- Centre for Life Sciences, National University of Singapore #03-09, 28 Medical Drive 117456 Singapore
| | - Yu Zhao
- Department of Chemistry, National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University Binhai New City Fuzhou 350207 China
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13
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Liu L, Ward RM, Schomaker JM. Mechanistic Aspects and Synthetic Applications of Radical Additions to Allenes. Chem Rev 2019; 119:12422-12490. [PMID: 31833759 DOI: 10.1021/acs.chemrev.9b00312] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
More than 50 years have passed since Haszeldine reported the first addition of a trifluoromethyl radical to an allene; in the intervening years, both the chemistry of allenes and the reactivity of single-electron species have become topics of intense interest. In this Review, we provide an overview of the fundamentals of radical additions to allenes and highlight the emergence of theoretical and experimental evidence that reveals unique reactivity patterns for radical additions to allenes as compared with other unsaturated compounds. Factors capable of exerting control over the chemo-, regio-, and stereoselectivities of the attack of carbon- and heteroatom-based radicals at each of the three potential reactive sites in an allene substrate are described. These include reaction conditions, the nature of the attacking radical, the substitution pattern of the allene, and the length of the linker between the radical center and the proximal allene carbon in the substrate. Cycloaddition reactions between allenes and partners containing π-bonds, which are likely to proceed through radical pathways, are presented to highlight their ability to rapidly access complex polycyclic scaffolds. Finally, the synthetic utility of the products arising from these chemistries is described, including their applications to the construction of complex molecules.
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Affiliation(s)
- Lu Liu
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Robert M Ward
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Jennifer M Schomaker
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
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14
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Anand A, Singh P, Kumar V, Bhargava G. Transition metal catalyzed [6 + 2] cycloadditions. RSC Adv 2019; 9:25554-25568. [PMID: 35530050 PMCID: PMC9070306 DOI: 10.1039/c9ra02839k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 08/02/2019] [Indexed: 11/25/2022] Open
Abstract
The [6 + 2] cycloaddition reactions are one of the important synthetic transformations to construct eight membered carbo-/heterocyclic systems. The present review is an attempt to update readers on transition metal catalyzed [6 + 2] cycloaddition reactions of various 6π-contributing substrates such as cycloheptatrienes (CHT), cyclooctatetrenes (COTT), allenals, vinylcyclobutanones, fulvene etc. employing rhodium, cobalt, titanium, copper, platinum, ruthenium, rhenium and diphenylprolinolsilyl ethers etc. as catalysts. The transition metal catalyzed [6 + 2] cycloaddition reactions with a variety of functionalized substrates provide straightforward access to eight membered cyclic and/or 5/8, 6/8 etc. condensed carbo-/heterocyclic molecules in moderate to good yields.
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Affiliation(s)
- Amit Anand
- Department of Chemistry, Khalsa College Amritsar 143005 Punjab India
| | - Prabhpreet Singh
- Department of Chemistry, Guru Nanak Dev University Amritsar-143005 India
| | - Vipan Kumar
- Department of Chemistry, Guru Nanak Dev University Amritsar-143005 India
| | - Gaurav Bhargava
- Department of Chemical Sciences, IKG Punjab Technical University Kapurthala 144603 Punjab India
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15
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Liu B, Hu Q, Wen Y, Fang B, Xu X, Hu Y. Versatile Dibenzothio[seleno]phenes via Hexadehydro-Diels-Alder Domino Cyclization. Front Chem 2019; 7:374. [PMID: 31179274 PMCID: PMC6543197 DOI: 10.3389/fchem.2019.00374] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/07/2019] [Indexed: 01/03/2023] Open
Abstract
A facile strategy to synthesize highly substituted dibenzoselenophenes and dibenzothiophenes by a domino hexadehydro-Diels–Alder reaction is reported in this article. The formation of three new C–C bonds, one new Caryl–Se/Caryl–S bond, and C–H σ-bond migration via one-pot multiterminal cycloaddition reactions were involved in over three transformations. The target tetracyclic compounds were prepared from tetraynes with a triphenylphosphine selenide or triphenylphosphine sulfide. This reaction played a pivotal role in constructing natural thio[seleno]phene cores, which were highly substituted, and is a robust method for producing fused heterocycles.
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Affiliation(s)
- Baohua Liu
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China
| | - Qiong Hu
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China
| | - Yinshan Wen
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China
| | - Bo Fang
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China
| | - Xiaoliang Xu
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China
| | - Yimin Hu
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China
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16
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He Y, Feng T, Fan X. Synthesis of Functionalized Indole-1-oxide Derivatives via Cascade Reactions of Allenynes and tBuONO. Org Lett 2019; 21:3918-3922. [DOI: 10.1021/acs.orglett.9b00968] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan He
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Tian Feng
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Environment, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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17
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Kramm F, Teske J, Ullwer F, Frey W, Plietker B. Anellierte Cyclobutane durch Fe‐katalysierte Cycloisomerisierung von Eninacetaten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Frederik Kramm
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Johannes Teske
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Franziska Ullwer
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Wolfgang Frey
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Bernd Plietker
- Institut für Organische Chemie Universität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
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18
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Kramm F, Teske J, Ullwer F, Frey W, Plietker B. Annelated Cyclobutanes by Fe‐Catalyzed Cycloisomerization of Enyne Acetates. Angew Chem Int Ed Engl 2018; 57:13335-13338. [DOI: 10.1002/anie.201806693] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Frederik Kramm
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Johannes Teske
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Franziska Ullwer
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Bernd Plietker
- Institut für Organische ChemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
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19
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Mandal N, Datta A. Gold(I)-Catalyzed Intramolecular Diels–Alder Reaction: Evolution of Trappable Intermediates via Asynchronous Transition States. J Org Chem 2018; 83:11167-11177. [DOI: 10.1021/acs.joc.8b01752] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Nilangshu Mandal
- Department of Spectroscopy, Indian Association for the Cultivation of Science, 2A and 2B Raja S.C. Mallick Road, Kolkata - 700032, India
| | - Ayan Datta
- Department of Spectroscopy, Indian Association for the Cultivation of Science, 2A and 2B Raja S.C. Mallick Road, Kolkata - 700032, India
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20
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Li H, Hao WJ, Wang M, Qin X, Tu SJ, Zhou P, Li G, Wang J, Jiang B. Catalytic Double [2 + 2] Cycloaddition Relay Enabled C-C Triple Bond Cleavage of Yne-Allenones. Org Lett 2018; 20:4362-4366. [PMID: 29989832 DOI: 10.1021/acs.orglett.8b01841] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
An unusual catalytic double [2 + 2] cycloaddition relay reaction of yne-allenones with unactivated alkenes and alkynes has been achieved, which enabled C-C triple-bond cleavage to access more than 60 examples of functionalized phenanthren-9-ols with generally good yields. This reaction provides a regioselective and practical method for the construction of carbocyclic ring systems with a high degree of functional group compatibility. Aside from surveying the scope of this transformation, mechanistic details of this process are provided by conducting systematic theoretical calculations.
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Affiliation(s)
- Heng Li
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , Jiangsu Normal University , Xuzhou 221116 , P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , Jiangsu Normal University , Xuzhou 221116 , P. R. China
| | - Mian Wang
- Medical College , Guangxi University , Nanning 530004 , P.R. China
| | - Xue Qin
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , Jiangsu Normal University , Xuzhou 221116 , P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , Jiangsu Normal University , Xuzhou 221116 , P. R. China
| | - Peng Zhou
- Institute of Chemistry & BioMedical Sciences, Nanjing University , Nanjing 210093 , P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences, Nanjing University , Nanjing 210093 , P. R. China.,Department of Chemistry and Biochemistry , Texas Tech University , Lubbock , Texas 79409-1061 , United States
| | - Jianyi Wang
- Medical College , Guangxi University , Nanning 530004 , P.R. China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials , Jiangsu Normal University , Xuzhou 221116 , P. R. China
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21
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Zhou P, Wang JY, Zhang TS, Li G, Hao WJ, Tu SJ, Jiang B. Thiazolium salt-catalyzed C-C triple bond cleavage for accessing substituted 1-naphthols via benzannulation. Chem Commun (Camb) 2018; 54:164-167. [PMID: 29218334 DOI: 10.1039/c7cc08792f] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first thiazolium salt-catalyzed C-C triple bond cleavage of benzene-linked allene-ynes has been established. The reaction pathway involves [2+2] cycloaddition and ring-opening of in situ generated cyclobutenes with H2O under mild and convenient conditions, and provides practical access to substituted 1-naphthols with potentially valuable applications.
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Affiliation(s)
- Peng Zhou
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
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22
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Saito N, Koyama M, Sato Y. Ruthenium-Catalyzed [2 + 2] Cyclization of 1,7-Allenynes in Ionic Liquid and Catalyst Recycling. HETEROCYCLES 2018. [DOI: 10.3987/com-18-s(t)46] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Wang JY, Zhou P, Li G, Hao WJ, Tu SJ, Jiang B. Synthesis of Functionalized Benzo[g]indoles and 1-Naphthols via Carbon–Carbon Triple Bond Breaking/Rearranging. Org Lett 2017; 19:6682-6685. [DOI: 10.1021/acs.orglett.7b03410] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jia-Yin Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Peng Zhou
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
- Institute of Chemistry & BioMedical Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences, Nanjing University, Nanjing 210093, P. R. China
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
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24
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Li X, Wei D, Li Z. Theoretical Study on DBU-Catalyzed Insertion of Isatins into Aryl Difluoronitromethyl Ketones: A Case for Predicting Chemoselectivity Using Electrophilic Parr Function. ACS OMEGA 2017; 2:7029-7038. [PMID: 31457285 PMCID: PMC6645149 DOI: 10.1021/acsomega.7b00907] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 10/05/2017] [Indexed: 06/10/2023]
Abstract
The possible mechanisms of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)-catalyzed chemoselective insertion of N-methyl isatin into aryl difluoronitromethyl ketone to synthesize 3,3-disubstituted and 2,2-disubstituted oxindoles have been studied in this work. As revealed by calculated results, the reaction occurs via two competing paths, including α and β carbonyl paths, and each path contains five steps, that is, nucleophilic addition of DBU to ketone, C-C bond cleavage affording difluoromethylnitrate anion and phenylcarbonyl-DBU cation, nucleophilic addition of difluoromethylnitrate anion to carbonyl carbon of N-methyl isatin, acyl transfer process, and dissociation of DBU and product. The computational results suggest that nucleophilic additions on different carbonyl carbons of N-methyl isatin via α and β carbonyl paths would lead to different products in the third step, and β carbonyl path associated with the main product 3,3-disubstituted oxindole is more energetically favorable, which is consistent with the experimental observations. Noteworthy, electrophilic Parr function can be successfully applied for exactly predicting the activity of reaction site and reasonably explaining the chemoselectivity. In addition, the distortion/interaction and noncovalent interaction analyses show that much more hydrogen bond interactions should be responsible for the lower energy of the transition state associated with β carbonyl path. The obtained insights would be valuable for the rational design of efficient organocatalysts for this kind of reactions with high selectivities.
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25
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Liu F, Wang JY, Zhou P, Li G, Hao WJ, Tu SJ, Jiang B. Merging [2+2] Cycloaddition with Radical 1,4-Addition: Metal-Free Access to Functionalized Cyclobuta[a
]naphthalen-4-ols. Angew Chem Int Ed Engl 2017; 56:15570-15574. [DOI: 10.1002/anie.201707615] [Citation(s) in RCA: 168] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 08/26/2017] [Indexed: 01/18/2023]
Affiliation(s)
- Feng Liu
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Jia-Yin Wang
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Peng Zhou
- Institute of Chemistry & BioMedical Sciences; Collaborative Innovation Center of Chemistry for Life Sciences; Nanjing University; Nanjing 210093 P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences; Collaborative Innovation Center of Chemistry for Life Sciences; Nanjing University; Nanjing 210093 P. R. China
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 USA
| | - Wen-Juan Hao
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Bo Jiang
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 USA
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26
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Liu F, Wang JY, Zhou P, Li G, Hao WJ, Tu SJ, Jiang B. Merging [2+2] Cycloaddition with Radical 1,4-Addition: Metal-Free Access to Functionalized Cyclobuta[a
]naphthalen-4-ols. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707615] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Liu
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Jia-Yin Wang
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Peng Zhou
- Institute of Chemistry & BioMedical Sciences; Collaborative Innovation Center of Chemistry for Life Sciences; Nanjing University; Nanjing 210093 P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences; Collaborative Innovation Center of Chemistry for Life Sciences; Nanjing University; Nanjing 210093 P. R. China
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 USA
| | - Wen-Juan Hao
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Bo Jiang
- School of Chemistry & Materials Science; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 USA
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27
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Liu X, Deaton TM, Haeffner F, Morken JP. A Boron Alkylidene-Alkene Cycloaddition Reaction: Application to the Synthesis of Aphanamal. Angew Chem Int Ed Engl 2017; 56:11485-11489. [PMID: 28718214 PMCID: PMC5699471 DOI: 10.1002/anie.201705720] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Indexed: 12/28/2022]
Abstract
We describe an unusual net [2+2] cycloaddition reaction between boron alkylidenes and unactivated alkenes. This reaction provides a new method for the construction of carbocyclic ring systems bearing versatile organoboronic esters. Aside from surveying the scope of this reaction, we provide details about the mechanistic underpinnings of this process, and examine its application to the synthesis of the natural product aphanamal.
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Affiliation(s)
- Xun Liu
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, MA, USA
| | - T Maxwell Deaton
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, MA, USA
| | - Fredrik Haeffner
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, MA, USA
| | - James P Morken
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, MA, USA
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28
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Liu X, Deaton TM, Haeffner F, Morken JP. A Boron Alkylidene-Alkene Cycloaddition Reaction: Application to the Synthesis of Aphanamal. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705720] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xun Liu
- Department of Chemistry; Boston College; 2609 Beacon Street Chestnut Hill MA USA
| | - T. Maxwell Deaton
- Department of Chemistry; Boston College; 2609 Beacon Street Chestnut Hill MA USA
| | - Fredrik Haeffner
- Department of Chemistry; Boston College; 2609 Beacon Street Chestnut Hill MA USA
| | - James P. Morken
- Department of Chemistry; Boston College; 2609 Beacon Street Chestnut Hill MA USA
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29
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Niggemann M, Fu L, Damsen H. Taming a Vinyl Cation with a Simple Al(OTf)3Catalyst To Promote C−C Bond Cleavage. Chemistry 2017; 23:12184-12189. [DOI: 10.1002/chem.201700282] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Meike Niggemann
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Liang Fu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Helena Damsen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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30
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Wang AF, Zhou P, Zhu YL, Hao WJ, Li G, Tu SJ, Jiang B. Metal-free benzannulation of 1,7-diynes towards unexpected 1-aroyl-2-naphthaldehydes and their application in fused aza-heterocyclic synthesis. Chem Commun (Camb) 2017; 53:3369-3372. [DOI: 10.1039/c7cc00323d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A novel I2-mediated benzannulation of 1,7-diyne-involved 1,4-oxo-migration was established, providing unexpected 1-aroyl-2-naphthaldehydes. The resulting 1-aroyl-2-naphthaldehydes were successfully applied in the synthesis of polycyclic isoindoles.
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Affiliation(s)
- Ai-Fang Wang
- School of Chemistry and Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Peng Zhou
- School of Chemistry and Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Yi-Long Zhu
- School of Chemistry and Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Wen-Juan Hao
- School of Chemistry and Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Guigen Li
- Department of Chemistry and Biochemistry
- Texas Tech University
- Lubbock
- USA
| | - Shu-Jiang Tu
- School of Chemistry and Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Bo Jiang
- School of Chemistry and Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
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31
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Zhu HT, Tong XJ, Zhou NN, Yang DS, Fan MJ. K2S2O8-promoted [2+2]-cycloaddition of benzyl-2-(3-hydroxypropynyl)-benzoates: A new route to polysubstituted cyclobutanes. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.10.098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Nguyen QNN, Tantillo DJ. When To Let Go—Diradical Intermediates from Zwitterionic Transition State Structures? J Org Chem 2016; 81:5295-302. [DOI: 10.1021/acs.joc.6b00533] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Q. Nhu N. Nguyen
- Department
of Chemistry, University of California—Davis, Davis, California 95616, United States
| | - Dean J. Tantillo
- Department
of Chemistry, University of California—Davis, Davis, California 95616, United States
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33
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Chen CR, Lai YX, Wu RY, Liu YH, Lin YC. Cyclization of 2-Ethynylphenyl Vinyl Ether Catalyzed by a Ruthenium Complex: Mechanism of Catalytic Cyclization and Stoichiometric Cycloisomerization. ChemCatChem 2016. [DOI: 10.1002/cctc.201600428] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Chi-Ren Chen
- Department of Chemistry; National Taiwan University; No. 1, Sec. 4, Roosevelt Rd. Taipei 10617, Taiwan R.O.C
| | - Ying-Xuan Lai
- Department of Chemistry; National Taiwan University; No. 1, Sec. 4, Roosevelt Rd. Taipei 10617, Taiwan R.O.C
| | - Rong-Yu Wu
- Department of Chemistry; National Taiwan University; No. 1, Sec. 4, Roosevelt Rd. Taipei 10617, Taiwan R.O.C
| | - Yi-Hung Liu
- Department of Chemistry; National Taiwan University; No. 1, Sec. 4, Roosevelt Rd. Taipei 10617, Taiwan R.O.C
| | - Ying-Chih Lin
- Department of Chemistry; National Taiwan University; No. 1, Sec. 4, Roosevelt Rd. Taipei 10617, Taiwan R.O.C
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34
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Kang T, Ge S, Lin L, Lu Y, Liu X, Feng X. A Chiral
N
,
N′
‐Dioxide–Zn
II
Complex Catalyzes the Enantioselective [2+2] Cycloaddition of Alkynones with Cyclic Enol Silyl Ethers. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600801] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Tengfei Kang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Shulin Ge
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Yan Lu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China
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35
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Kirkpatrick AK, Siebert MR. Cations or Radicals? Inherent Reactivity of Biosynthetic Intermediates in the B-Ring Formation of Rotenoid Natural Products. J Phys Chem A 2016; 120:2372-9. [DOI: 10.1021/acs.jpca.5b12367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Adam K. Kirkpatrick
- Department of Chemistry, Missouri State University, Springfield, Missouri 65897, United States
| | - Matthew R. Siebert
- Department of Chemistry, Missouri State University, Springfield, Missouri 65897, United States
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36
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Kang T, Ge S, Lin L, Lu Y, Liu X, Feng X. A Chiral
N
,
N′
‐Dioxide–Zn
II
Complex Catalyzes the Enantioselective [2+2] Cycloaddition of Alkynones with Cyclic Enol Silyl Ethers. Angew Chem Int Ed Engl 2016; 55:5541-4. [DOI: 10.1002/anie.201600801] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Tengfei Kang
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Shulin Ge
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Yan Lu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China
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37
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Sequential oxidation/thermal induced intramolecular [2+2] cycloaddition of propynol-vinylidenecyclopropanes: access to novel cyclobutene-containing spiro[2.3]hexenes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.11.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Brummond KM, Kocsis LS. Intramolecular didehydro-Diels-Alder reaction and its impact on the structure-function properties of environmentally sensitive fluorophores. Acc Chem Res 2015. [PMID: 26207414 DOI: 10.1021/acs.accounts.5b00126] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Reaction discovery plays a vital role in accessing new chemical entities and materials possessing important function.1 In this Account, we delineate our reaction discovery program regarding the [4 + 2] cycloaddition reaction of styrene-ynes. In particular, we highlight our studies that lead to the realization of the diverging reaction mechanisms of the intramolecular didehydro-Diels-Alder (IMDDA) reaction to afford dihydronaphthalene and naphthalene products. Formation of the former involves an intermolecular hydrogen atom abstraction and isomerization, whereas the latter is formed via an unexpected elimination of H2. Forming aromatic compounds by a unimolecular elimination of H2 offers an environmentally benign alternative to typical oxidation protocols. We also include in this Account ongoing work focused on expanding the scope of this reaction, mainly its application to the preparation of cyclopenta[b]naphthalenes. Finally, we showcase the synthetic utility of the IMDDA reaction by preparing novel environmentally sensitive fluorophores. The choice to follow this path was largely influenced by the impact this reaction could have on our understanding of the structure-function relationships of these molecular sensors by taking advantage of a de novo construction and functionalization of the aromatic portion of these compounds. We were also inspired by the fact that, despite the advances that have been made in the construction of small molecule fluorophores, access to rationally designed fluorescent probes or sensors possessing varied and tuned photophysical, spectral, and chemical properties are still needed. To this end, we report our studies to correlate fluorophore structure with photophysical property relationships for a series of solvatochromic PRODAN analogs and viscosity-sensitive cyanoacrylate analogs. The versatility of this de novo strategy for fluorophore synthesis was demonstrated by showing that a number of functional groups could be installed at various locations, including handles for eventual biomolecule attachment or water-solubilizing groups. Further, biothiol sensors were designed, and we expect these to be of general utility for the study of lipid dynamics in cellular membranes and for the detection of protein-binding interactions, ideal applications for these relatively hydrophobic fluorophores. Future studies will be directed toward expanding this chemistry-driven approach to the rational preparation of fluorophores with enhanced photophysical and chemical properties for application in biological systems.
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Affiliation(s)
- Kay M. Brummond
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15206, United States
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Yang T, Nagase S, Akasaka T, Poblet JM, Houk KN, Ehara M, Zhao X. (2 + 2) Cycloaddition of Benzyne to Endohedral Metallofullerenes M3N@C80 (M = Sc, Y): A Rotating-Intermediate Mechanism. J Am Chem Soc 2015; 137:6820-8. [DOI: 10.1021/jacs.5b01444] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tao Yang
- Institute for Chemical Physics & Department of Chemistry, Xi’an Jiaotong University, Xi’an 710049, China
- Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Shigeru Nagase
- Fukui
Institute for Fundamental Chemistry, Kyoto University, Kyoto 606-8103, Japan
| | - Takeshi Akasaka
- Department
of Chemistry, Tokyo Gakugei University, Tokyo 184-8501, Japan
| | - Josep M. Poblet
- Department
de Química Físicai Inorgànica, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Masahiro Ehara
- Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Xiang Zhao
- Institute for Chemical Physics & Department of Chemistry, Xi’an Jiaotong University, Xi’an 710049, China
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Karmakar R, Yun SY, Chen J, Xia Y, Lee D. Benzannulation of Triynes to Generate Functionalized Arenes by Spontaneous Incorporation of Nucleophiles. Angew Chem Int Ed Engl 2015; 54:6582-6. [DOI: 10.1002/anie.201412468] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 02/27/2015] [Indexed: 02/02/2023]
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41
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Karmakar R, Yun SY, Chen J, Xia Y, Lee D. Benzannulation of Triynes to Generate Functionalized Arenes by Spontaneous Incorporation of Nucleophiles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412468] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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42
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Fabig S, Haberhauer G, Gleiter R. Dimerization of Two Alkyne Units: Model Studies, Intermediate Trapping Experiments, and Kinetic Studies. J Am Chem Soc 2015; 137:1833-43. [DOI: 10.1021/ja510699b] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sven Fabig
- Institut
für Organische Chemie, Universität Duisburg-Essen, Universitätsstrasse
7, D-45117 Essen, Germany
| | - Gebhard Haberhauer
- Institut
für Organische Chemie, Universität Duisburg-Essen, Universitätsstrasse
7, D-45117 Essen, Germany
| | - Rolf Gleiter
- Organisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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Hong X, Stevens MC, Liu P, Wender PA, Houk KN. Reactivity and chemoselectivity of allenes in Rh(I)-catalyzed intermolecular (5 + 2) cycloadditions with vinylcyclopropanes: allene-mediated rhodacycle formation can poison Rh(I)-catalyzed cycloadditions. J Am Chem Soc 2014; 136:17273-83. [PMID: 25379606 PMCID: PMC4277756 DOI: 10.1021/ja5098308] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Indexed: 11/30/2022]
Abstract
Allenes are important 2π building blocks in organic synthesis and engage as 2-carbon components in many metal-catalyzed reactions. Wender and co-workers discovered that methyl substituents on the terminal allene double bond counterintuitively change the reactivities of allenes in [Rh(CO)2Cl]2-catalyzed intermolecular (5 + 2) cycloadditions with vinylcyclopropanes (VCPs). More sterically encumbered allenes afford higher cycloadduct yields, and such effects are also observed in other Rh(I)-catalyzed intermolecular cycloadditions. Through density functional theory calculations (B3LYP and M06) and experiment, we explored this enigmatic reactivity and selectivity of allenes in [Rh(CO)2Cl]2-catalyzed intermolecular (5 + 2) cycloadditions with VCPs. The apparent low reactivity of terminally unsubstituted allenes is associated with a competing allene dimerization that irreversibly sequesters rhodium. With terminally substituted allenes, steric repulsion between the terminal substituents significantly increases the barrier of allene dimerization while the barrier of the (5 + 2) cycloaddition is not affected, and thus the cycloaddition prevails. Computation has also revealed the origin of chemoselectivity in (5 + 2) cycloadditions with allene-ynes. Although simple allene and acetylene have similar reaction barriers, intermolecular (5 + 2) cycloadditions of allene-ynes occur exclusively at the terminal allene double bond. The terminal double bond is more reactive due to the enhanced d-π* backdonation. At the same time, insertion of the internal double bond of an allene-yne has a higher barrier as it would break π conjugation. Substituted alkynes are more difficult to insert compared with acetylene, because of the steric repulsion from the additional substituents. This leads to the greater reactivity of the allene double bond relative to the alkynyl group in allene-ynes.
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Affiliation(s)
- Xin Hong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Matthew C. Stevens
- Department
of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305, United States
| | - Peng Liu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Paul A. Wender
- Department
of Chemistry, Department of Chemical and Systems Biology, Stanford University, Stanford, California 94305, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
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Alcaide B, Almendros P, Aragoncillo C, Fernández I, Gómez-Campillos G. Microwave-promoted synthesis of bicyclic azocine-β-lactams from bis(allenes). J Org Chem 2014; 79:7075-83. [PMID: 25010752 DOI: 10.1021/jo501231q] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A metal-free preparation of structurally novel bicyclic azocine-β-lactams has been developed. The first examples accounting for the preparation of eight-membered rings from bis(allenes) in the absence of metals have been achieved by the thermolysis of nonconjugated 2-azetidinone-tethered bis(allenes) on application of microwave irradiation. This selective carbocyclization reaction has been studied experimentally, and additionally, its mechanism has been investigated by a DFT study.
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Affiliation(s)
- Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos, Departamento de Quı́mica Orgánica I, Unidad Asociada al CSIC, Facultad de Quı́mica, Universidad Complutense de Madrid , 28040 Madrid, Spain
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45
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Qiao Y, Han KL. Theoretical investigations toward the tandem reactions of N-aziridinyl imine compounds forming triquinanes via trimethylenemethane diyls: mechanisms and stereoselectivity. Org Biomol Chem 2014; 12:1220-31. [PMID: 24336836 DOI: 10.1039/c3ob42115e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we have investigated the tandem reaction mechanism for the N-aziridinyl imine compounds forming triquinanes via trimethylenemethane (TMM) diyls in detail. Based on the calculated results, the reaction is initiated by the cleavage of the N-aziridinyl in the substrate, followed by an intramolecular 1,3-dipolar (3 + 2) cycloaddition preferentially leading to a linearly-fused tetrahydrocyclopentapyrazole intermediate. Next, the intermediate loses N2 to form the singlet TMM diyl M3S, which can then undergo another concerted (3 + 2) cycloaddition to generate the linearly-fused cis–trans or cis–syn triquinane products. In addition, M3S can also undergo intersystem crossing to the triplet TMM diyl M3T, and the six possible reaction pathways associated with M3T have also been identified. The calculated results reveal that the cis–trans fused pathway associated with M3S is energetically preferred with the highest free energy barrier of 25.0 kcal mol(−1). In comparison, the cyclization of M3T requires much higher activation free energies (ΔG(≠) = 34.4–57.8 kcal mol(−1)). At the experimental temperature 110 °C, only the linearly-fused cis–trans and cis–syn pathways associated with M3T (ΔG(≠) = 34.4 and 35.5 kcal mol(−1) respectively) are possible. The calculated results also indicate that for both M3S and M3T, the linearly-fused cis–trans triquinane should be the main product, which is consistent with the experimental observation. At last, conformational and NBO analyses on key transition states identified the cis–trans stereocontrol factors. Further calculations indicate that the methyl substituent on the allene group of the reactant substrate improves the stereoselectivity of the reaction but does not affect the rate-determining step.
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Affiliation(s)
- Yan Qiao
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Zhongshan Road 457, Dalian 116023, P. R. China.
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Diethelm S, Schoenebeck F, Carreira EM. Mechanistic Insight into the Spirocyclopropane Isoxazolidine Ring Contraction. Org Lett 2014; 16:960-3. [DOI: 10.1021/ol403693t] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stefan Diethelm
- Laboratorium
für Organische Chemie, ETH Zürich, HCI H335, Vladimir-Prelog-Weg
3, 8093 Zürich, Switzerland
| | - Franziska Schoenebeck
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Erick M. Carreira
- Laboratorium
für Organische Chemie, ETH Zürich, HCI H335, Vladimir-Prelog-Weg
3, 8093 Zürich, Switzerland
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47
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Soriano E, Fernández I. Allenes and computational chemistry: from bonding situations to reaction mechanisms. Chem Soc Rev 2014; 43:3041-105. [DOI: 10.1039/c3cs60457h] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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48
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Hori H, Arai S, Nishida A. A 2-Benzothiazolylphenyl Group Accelerates the Intramolecular [2+2] Cycloaddition of Allene-Ynes. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300218] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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49
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Homopyrrole and homofuran as masked 1,5-dipoles in metal-free (5+2) cycloadditions with dienophiles: a DFT study. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.123] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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50
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Affiliation(s)
- Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University (HIRODAI), 1-3-1 Kagamiyama, Higashi-Hiroshima,
Hiroshima 739-8526, Japan
- Institute for Molecular Science (IMS), Okazaki, Aichi 444-8787,
Japan
- JST-CREST, 5
Sanbancho,
Chiyodaku, Tokyo 102-0075, Japan
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