1
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Shi WY, Zhang SL. Copper/O 2-Mediated Oxidative C-C Activation of Nitriles for Selective Acylation-Bromination of Anilines. J Org Chem 2024; 89:6929-6936. [PMID: 38717970 DOI: 10.1021/acs.joc.4c00287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
This study reports selective dual amino acylation and C-H bromination of aniline compounds enabled by Cu/O2 catalyst systems. This method involves crucial oxidation-induced C-CN bond cleavage of α-methylene nitriles to generate an acylcyanide intermediate that is facilely intercepted by anilines. After amino acylation, the Cu(II) precatalyst in combination with NBS generates Cu(III)-Br in situ that engages in selective electrophilic para- or ortho-C-H bromination. The substrate scope, mechanistic aspects, and late-stage functionalization of biologically active anilines are studied. This study shows the synthetic potential of oxidative C-CN bond activation of nitriles for the development of valuable reactions.
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Affiliation(s)
- Wei-Yu Shi
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Song-Lin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
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2
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Lee TW, Yang HS, Dawange M, Han YK, Yang JW. Transition-Metal-Free Unusual Oxidative Cleavage of Homoallylic Alcohol and Its Application in the Upcycling of Terpene to Value-Added Chemicals. CHEMSUSCHEM 2023; 16:e202202387. [PMID: 36658092 DOI: 10.1002/cssc.202202387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 05/06/2023]
Abstract
A NaOtBu-O2 -mediated oxidative dehomologation of homoallylic alcohols into structurally different carboxylic acids through direct oxidative cleavage of either the C(sp2 )-C(sp2 ) or C(sp3 )-C(sp3 ) bond utilizing enolate chemistry was demonstrated. Furthermore, under transition-metal-free conditions, this protocol has been applied to convert terpene as biomass feedstock into value-added chemicals.
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Affiliation(s)
- Tae Woo Lee
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Hye Sung Yang
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Monali Dawange
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Young Kwang Han
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Jung Woon Yang
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, South Korea
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3
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Li X, Hu L, Ma S, Yu H, Lu G, Xu T. Divergent Rh Catalysis: Asymmetric Dearomatization Versus C–H Activation Initiated by C–C Activation. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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4
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Liu J, Shoshani MM, Sum K, Johnson SA. Breaking bonds and breaking rules: inert-bond activation by [( iPr 3P)Ni] 5H 4 and catalytic stereospecific norbornene dimerization. Chem Commun (Camb) 2023; 59:3542-3545. [PMID: 36689211 DOI: 10.1039/d2cc06681e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The facile carbon atom abstraction reaction by [(iPr3P)Ni]5H6 (1) with various terminal alkenes to give [(iPr3P)Ni]5H4(μ5-C) (2) occurs via a common highly reactive intermediate [(iPr3P)Ni]5H4 (3), which was isolated by the reaction of 1 with norbornene. Temperature dependent 1H and 31P{1H} NMR chemical shifts of 3 are consistent with a thermally populated triplet excited state only 2 kcal mol-1 higher energy than the diamagnetic ground state. Complex 3 catalyzes the dimerization of norbornene to stereoselectively provide exclusively (Z) anti-(bis-2,2'-norbornylidene).
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Affiliation(s)
- Junyang Liu
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, ON, N9B 3P4, Canada.
| | - Manar M Shoshani
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, ON, N9B 3P4, Canada.
| | - Kethya Sum
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, ON, N9B 3P4, Canada.
| | - Samuel A Johnson
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, ON, N9B 3P4, Canada.
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5
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Lu K, Zhu J, Wang J, Wa Q, Guo Z, Xiong W, Gao Y, Lei R, Cheng B, Wang X. Syntheses of η 1 -Alkyl-η 3 -Allyl-η 5 -Cyclopentadienyl Cobalt(III) Complexes and Their Use in Low-temperature Atomic Layer Deposition of Cobalt-Containing Thin Films. Chemistry 2023; 29:e202203656. [PMID: 36445818 DOI: 10.1002/chem.202203656] [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: 11/24/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 11/30/2022]
Abstract
Herein, we report the design and scalable synthesis of three new Co(III) complexes, which have an unusual hydrocarbon η1 -alkyl-η3 -allyl-η5 -cyclopentadienyl ligation structure, from the reactions of readily available cobalt(II) compound CoCl2 (PPh3 )2 and biomass material β-pinene via C-C bond activation. These Co(III) complexes are air-stable, fairly volatile, and thermally stable, so they are excellent candidates as the metal precursors for the vapor deposition of cobalt-containing thin films. As a demonstration, we show that the Co(III) complex of [(3'-5'-η,1-σ)-methylene(2,2,4-trimethyl-4-cyclohexene-1,3-diyl)](η5 -methylcyclopentadienyl)Co (i. e. (seco-pinene)(MeCp)Co) is well suited for the atomic layer deposition (ALD) of Co3 O4 and CoS2 thin films, and the deposited Co3 O4 and CoS2 films are able to conformally cover trench structures with a fairly high aspect ratio of 10 : 1.
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Affiliation(s)
- Ke Lu
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Jiahao Zhu
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Jialiang Wang
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Qingbo Wa
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Zheng Guo
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Wei Xiong
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Yuan Gao
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, 100871, P. R. China
| | - Renbo Lei
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
| | - Bichu Cheng
- School of Science, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, P. R. China
| | - Xinwei Wang
- School of Advanced Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, P. R. China
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6
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Hou SH, Yu X, Zhang R, Wagner C, Dong G. Rhodium-Catalyzed Diastereo- and Enantioselective Divergent Annulations between Cyclobutanones and 1,5-Enynes: Rapid Construction of Complex C(sp 3)-Rich Scaffolds. J Am Chem Soc 2022; 144:22159-22169. [PMID: 36399332 PMCID: PMC10630065 DOI: 10.1021/jacs.2c09814] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Given the emerging demand to "escape from flatland" for drug discovery, synthetic methods that can efficiently construct complex three-dimensional structures with multi-stereocenters become increasingly valuable. Here, we describe the development of Rh(I)-catalyzed intramolecular annulations between cyclobutanones and 1,5-enyne groups to construct complex C(sp3)-rich scaffolds. Divergent reactivities are realized with different catalysts, and excellent diastereo- and enantioselectivity have been achieved. The use of (R)-H8-binap as the ligand favors forming the bis-bicyclic scaffolds with multiple quaternary stereocenters, while the (R)-segphos ligand prefers to generate the tetrahydro-azapinone products. Owing to the versatile reactivity of ketone moieties, these C(sp3)-rich scaffolds can be further functionalized. Experimental and computational mechanistic studies support a reaction pathway involving enyne-cyclometallation, 1,2-carbonyl addition, and then β-carbon elimination; the divergent reactivities are dictated by a product-determining Rh-alkyl migratory insertion step.
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Affiliation(s)
- Si-Hua Hou
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Xuan Yu
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Rui Zhang
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Cole Wagner
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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7
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Wu Q, Liu W, Wang M, Huang Y, Hu P. Iron-catalyzed deconstructive alkylation through chlorine radical induced C-C single bond cleavage under visible light. Chem Commun (Camb) 2022; 58:9886-9889. [PMID: 35980142 DOI: 10.1039/d2cc03896j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective C-C single bond cleavage of simple compounds is a highly challenging and desired process. Herein, a chlorine radical-induced deconstructive C-C bond alkylation with alcohols and alkenes catalyzed by iron salts was reported for the first time. Readily available alcohols and various electron-deficient alkenes were tolerated. Late-stage and large-scale reactions proceed smoothly. This catalyst system shows potential for diversified deconstructive functionalization of simple C-C bonds.
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Affiliation(s)
- Qiang Wu
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China.
| | - Wei Liu
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China.
| | - Miao Wang
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China.
| | - Yahao Huang
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China.
| | - Peng Hu
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China.
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8
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Xue Y, Dong G. Deconstructive Synthesis of Bridged and Fused Rings via Transition-Metal-Catalyzed "Cut-and-Sew" Reactions of Benzocyclobutenones and Cyclobutanones. Acc Chem Res 2022; 55:2341-2354. [PMID: 35901263 PMCID: PMC9386905 DOI: 10.1021/acs.accounts.2c00400] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Bridged and fused rings are commonly found in biologically important molecules. Current tactics to construct these ring systems are primarily based on stepwise ring formation (i.e., making one ring first followed by making another) and cycloaddition reactions (e.g., Diels-Alder reaction). To seek a complementary and perhaps more unified ring-forming approach, a deconstructive strategy based on C-C bond activation of cyclic ketones has been conceived. The named "cut-and-sew" reaction uses cyclic ketones with a tethered unsaturated moiety as substrates, which involves oxidative addition of a transition metal into the ketone C-C bond followed by intramolecular insertion of the unsaturated unit. This strategy has proved successful to access diverse ring scaffolds that are nontrivial to construct otherwise.This Account offers a concise summary of our laboratory's systematic efforts in developing transition metal-catalyzed cut-and-sew reactions for the synthesis of bridged and fused rings over the past 10 years. In particular, we will focus on the reactions using readily available benzocyclobutenones and cyclobutanones. To date, the scope of the cut-and-sew reactions has been greatly expanded. First, diverse unsaturated moieties can serve as suitable coupling partners, such as alkenyl, alkynyl, allenyl, carbonyl, and iminyl groups. Second, a variety of reaction modes have been uncovered. In this account, (4 + 2), (4 + 2 - 1), and (4 + 1) cycloadditions that lead to a range of bridged or fused scaffolds will be summarized. Third, enantioselective transformations have been realized to efficiently construct chiral scaffolds, which are enabled by two strategies: enantio-determining migratory insertion and desymmetrization of cyclobutanones. Fourth, the synthetic applications have been demonstrated in streamlined total syntheses of a number of complex natural products. Compared to conventional synthetic logics, the cut-and-sew reaction allows the development of new bond-disconnecting strategies. Thus, the syntheses of (-)-cycloclavine, (-)-thebainone A, penicibilaenes, and the proposed cycloinumakiol are discussed in more detail.In addition to the narrative of the development of the cut-and-sew chemistry, this Account also aims to provide core guiding foundations and inspirations toward broader deconstructive synthetic applications through C-C bond cleavage. It is anticipated that more classes of cyclic compounds could serve as the substrates beyond benzocyclobutenones and cyclobutanones, and more diverse unsaturated moieties could be coupled. It can also be envisaged that more innovative utilization of this cut-and-sew strategy in complex organic syntheses will be revealed in the near future.
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Affiliation(s)
- Yibin Xue
- Department
of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department
of Chemistry, University of Chicago, Chicago, Illinois 60637, United States,E-mail:
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9
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Jakhar VK, Esper AM, Ghiviriga I, Abboud KA, Ehm C, Veige AS. Isolation of an Elusive Phosphametallacyclobutadiene and Its Role in Reversible Carbon−Carbon Bond Cleavage. Angew Chem Int Ed Engl 2022; 61:e202203073. [PMID: 35536109 PMCID: PMC9296546 DOI: 10.1002/anie.202203073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Indexed: 11/11/2022]
Abstract
The reactivity of phosphaalkynes, the isolobal and isoelectronic congeners to alkynes, with metal alkylidyne complexes is explored in this work. Treating the tungsten alkylidyne [t BuOCO]W≡Ct Bu(THF)2 (1) with phosphaalkyne (10) results in the formation of [O2 C(t BuC=)W{η2 -(P,C)-P≡C-Ad}(THF)] (13-t BuTHF ) and [O2 C(AdC=)W{η2 -(P,C)-P≡C-t Bu}(THF)] (13-AdTHF ); derived from the formal reductive migratory insertion of the alkylidyne moiety into a W-Carene bond. Analogous to alkyne metathesis, a stable phosphametallacyclobutadiene complex [t BuOCO]W[κ2 -C(t Bu)PC(Ad)] (14) forms upon loss of THF from the coordination sphere of either 13-t BuTHF or 13-AdTHF . Remarkably, the C-C bonds reversibly form/cleave with the addition or removal of THF from the coordination sphere of the formal tungsten(VI) metal center, permitting unprecedented control over the transformation of a tetraanionic pincer to a trianionic pincer and back. Computational analysis offers thermodynamic and electronic reasoning for the reversible equilibrium between 13-t Bu/AdTHF and 14.
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Affiliation(s)
- Vineet K. Jakhar
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
| | - Alec M. Esper
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
| | - Ion Ghiviriga
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
| | - Khalil A. Abboud
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
| | - Christian Ehm
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
| | - Adam S. Veige
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
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10
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Yu S, Ai Y, Hu L, Lu G, Duan C, Ma Y. Palladium-Catalyzed Stagewise Strain-Release-Driven C-C Activation of Bicyclo[1.1.1]pentanyl Alcohols. Angew Chem Int Ed Engl 2022; 61:e202200052. [PMID: 35332648 DOI: 10.1002/anie.202200052] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Indexed: 12/20/2022]
Abstract
A palladium-catalyzed chemoselective coupling of readily available bicyclo[1.1.1]pentanyl alcohols (BCP-OH) with various halides is reported, which offers expedient approaches to a wide range of cyclobutanone and β,γ-enone skeletons via single or double C-C activation. The chemistry shows a broad substrate scope in terms of both the range of BCP-OH and halides including a series of natural product derivatives. Moreover, dependency of reaction chemodivergence on base additive has been investigated through experimental and density functional theory (DFT) studies, which is expected to significantly enrich the reaction modes and increase the synthetic potential of BCP-OH in preparing more complex molecules.
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Affiliation(s)
- Songjie Yu
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Yinan Ai
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Lingfei Hu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, China
| | - Gang Lu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, China
| | - Chunying Duan
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Yue Ma
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, China
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11
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Jakhar VK, Esper AM, Ghiviriga I, Abboud KA, Ehm C, Veige AS. Isolation of an Elusive Phosphametallacyclobutadiene and Its Role in Reversible Carbon−Carbon Bond Cleavage. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Vineet K. Jakhar
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
| | - Alec M. Esper
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
| | - Ion Ghiviriga
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
| | - Khalil A. Abboud
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
| | - Christian Ehm
- Dipartimento di Scienze Chimiche Università di Napoli Federico II Via Cintia 80126 Napoli Italy
| | - Adam S. Veige
- Department of Chemistry University of Florida Center for Catalysis P.O. Box 117200 Gainesville FL 32611 USA
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12
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Yu X, Zhang Z, Dong G. Catalytic Enantioselective Synthesis of γ-Lactams with β-Quaternary Centers via Merging of C-C Activation and Sulfonyl Radical Migration. J Am Chem Soc 2022; 144:9222-9228. [PMID: 35580261 DOI: 10.1021/jacs.2c03746] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transition-metal-catalyzed C-C activation has become synthetically valuable; however, it rarely involves single-electron downstream processes. To expand the repertoire of C-C activation, here we describe the discovery of a Rh-catalyzed enantioselective C-C activation involving migration of a sulfonyl radical. This reaction directly transforms cyclobutanones containing a sulfonamide-tethered 1,3-diene moiety into γ-lactams containing a β-quaternary center with excellent enantioselectivity. This unusual process involves cleavage of C-C and N-S bonds and subsequent formation of C-N and C-S bonds. The reaction also exhibits broad functional group tolerance and a good substrate scope. A combined experimental and computational mechanistic study suggested that the reaction goes through a Rh(I)-mediated oxidative addition into the cyclobutanone C-C bond followed by a Rh(III)-triggered N-S bond homolysis and sulfonyl radical migration.
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Affiliation(s)
- Xuan Yu
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Zining Zhang
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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13
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Kodama T, Saito K, Tobisu M. Nickel-catalyzed skeletal transformation of tropone derivatives via C-C bond activation: catalyst-controlled access to diverse ring systems. Chem Sci 2022; 13:4922-4929. [PMID: 35655866 PMCID: PMC9067618 DOI: 10.1039/d2sc01394k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/03/2022] [Indexed: 02/02/2023] Open
Abstract
We report herein on nickel-catalyzed carbon-carbon bond cleavage reactions of 2,4,6-cycloheptatrien-1-one (tropone) derivatives. When a Ni/N-heterocyclic carbene catalyst is used, decarbonylation proceeds with the formation of a benzene ring, while the use of bidentate ligands in conjunction with an alcohol additive results in a two-carbon ring contraction with the generation of cyclopentadiene derivatives. The latter reaction involves a nickel-ketene complex as an intermediate, which was characterized by X-ray crystallography. The choice of an appropriate ligand allows for selective synthesis of four different products via the cleavage of a seven-membered carbocyclic skeleton. Reaction mechanisms and ligand-controlled selectivity for both types of ring contraction reactions were also investigated computationally.
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Affiliation(s)
- Takuya Kodama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Suita Osaka 565-0871 Japan
| | - Kanako Saito
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI) Suita Osaka 565-0871 Japan
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14
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Yu S, Ai Y, Hu L, Lu G, Duan C, Ma Y. Palladium‐Catalyzed Stagewise Strain‐Release‐Driven C−C Activation of Bicyclo[1.1.1]pentanyl Alcohols. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Songjie Yu
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 China
| | - Yinan Ai
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 China
| | - Lingfei Hu
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry Ministry of Education Shandong University Jinan 250100 China
| | - Gang Lu
- School of Chemistry and Chemical Engineering Key Laboratory of Colloid and Interface Chemistry Ministry of Education Shandong University Jinan 250100 China
| | - Chunying Duan
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 China
| | - Yue Ma
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 China
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15
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Zhu J, Xue Y, Zhang R, Ratchford BL, Dong G. Catalytic Activation of Unstrained C(Aryl)-C(Alkyl) Bonds in 2,2'-Methylenediphenols. J Am Chem Soc 2022; 144:3242-3249. [PMID: 35138096 PMCID: PMC9115852 DOI: 10.1021/jacs.1c13342] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Catalytic activation of unstrained and nonpolar C-C bonds remains a largely unmet challenge. Here, we describe our detailed efforts in developing a rhodium-catalyzed hydrogenolysis of unstrained C(aryl)-C(alkyl) bonds in 2,2'-methylenediphenols aided by removable directing groups. Good yields of the monophenol products are obtained with tolerating a wide range of functional groups. In addition, the reaction is scalable, and the catalyst loading can be reduced to as low as 0.5 mol %. Moreover, this method proves to be effective to cleave C(aryl)-C(alkyl) linkages in both models of phenolic resins and commercial novolacs resins. Finally, detailed experimental and computational mechanistic studies show that with C-H activation being a competitive but reversible off-cycle reaction, this transformation goes through a directed C(aryl)-C(alkyl) oxidative addition pathway.
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Affiliation(s)
- Jun Zhu
- Department of chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Yibin Xue
- Department of chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Rui Zhang
- Department of chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Benjamin L. Ratchford
- Department of chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of chemistry, University of Chicago, Chicago, Illinois 60637, United States
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16
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Avullala T, Nguyen HH, Dakarapu US, Asgari P, Hua Y, Jeon J. Catalytic Net Oxidative C-C Activation and Silylation of Cyclopropanols with a Traceless Acetal Directing Group. ACS Catal 2022; 12:1764-1774. [PMID: 35573128 DOI: 10.1021/acscatal.1c04628] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Redox-neutral carbon-carbon (C-C) bond activation and functionalization strategies of cyclopropanols that give metallo homoenolate have offered merits to construct a range of useful β-functionalized ketones in an inverse-polarity fashion. Discovery and identification of oxidative C-C activation reactions of cyclopropanols that generate metallo enolate-homoenolate would provide an opportunity to afford α,β-difunctionalized ketones. We report catalytic, net oxidative C-C activation, and silylation of cyclopropanols with traceless acetal directing groups under consecutive Ir and Rh catalysis in regio-, stereo-, and chemo-selective fashion. In detail, Ir-catalyzed hydrosilylation of cyclopropyl acetates provides the acetal directing group in quantitative yield. Rh-catalyzed proximal C-C silylation of the resulting cyclopropyl silyl acetal produces the metallo enolate-homoenolate equivalent, dioxasilepine, which uniquely holds an interconnected β-silyl moiety and Z-vinyl acetal. Upon sequential treatment of a silaphile that removes the acetal directing group and electrophile, the seven-membered silicon-containing heterocycle, serving as the ketone α,β-dianion equivalent, delivers α,β-difunctionalized ketones. Scope of the hitherto unexplored reactivity of cyclopropanols toward net oxidative C-C silylation and the versatility of the resulting dioxasilepines were demonstrated. These include late-stage, net oxidative C-C silylation of biologically relevant molecules and facile production of a range of α,β-difunctionalized ketones. Preliminary mechanistic studies suggest that the C-C activation harnessing the electron-rich Wilkinson-type catalyst is likely the turnover-determining step and a Rh-π interaction is the key to the efficient metal insertion to the proximal C-C bond in cyclopropanols.
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Affiliation(s)
- Thirupataiah Avullala
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Hiep H. Nguyen
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Udaya Sree Dakarapu
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Parham Asgari
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Yuanda Hua
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Junha Jeon
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
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17
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Zhou X, Xu Y, Dong G. Deacylation-aided C–H alkylative annulation through C–C cleavage of unstrained ketones. Nat Catal 2021; 4:703-710. [DOI: 10.1038/s41929-021-00661-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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18
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Wang Y, Qiu B, Hu L, Lu G, Xu T. Rh-Catalyzed Cascade C–C/C olefin–H Activations and Mechanistic Insight. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02480] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yuxi Wang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
- Laboratory for Marine Drugs and Bioproducts and Open Studio for Druggability Research of Marine Natural Products, Pilot NLMST, Jimo, Qingdao 266237, People’s Republic of China
| | - Bo Qiu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
- Laboratory for Marine Drugs and Bioproducts and Open Studio for Druggability Research of Marine Natural Products, Pilot NLMST, Jimo, Qingdao 266237, People’s Republic of China
| | - Lingfei Hu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People’s Republic of China
| | - Gang Lu
- School of Chemistry and Chemical Engineering, Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, People’s Republic of China
| | - Tao Xu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
- Laboratory for Marine Drugs and Bioproducts and Open Studio for Druggability Research of Marine Natural Products, Pilot NLMST, Jimo, Qingdao 266237, People’s Republic of China
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19
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Liu L, Cheng F, Meng C, Zhang AA, Zhang M, Xu K, Ishida N, Murakami M. Pd-Catalyzed Ring-Closing/Ring-Opening Cross Coupling Reactions: Enantioselective Diarylation of Unactivated Olefins. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02277] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Lantao Liu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
- Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
| | - Fangyuan Cheng
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Chenxiang Meng
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - An-An Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Mingliang Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Kai Xu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Naoki Ishida
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
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20
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Hou S, Prichina AY, Dong G. Deconstructive Asymmetric Total Synthesis of Morphine‐Family Alkaloid (−)‐Thebainone A. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Si‐Hua Hou
- Department of Chemistry University of Chicago Chicago Illinois 60637 USA)s
| | | | - Guangbin Dong
- Department of Chemistry University of Chicago Chicago Illinois 60637 USA)s
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21
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Wagner CJ, Salisbury EA, Schoonover EJ, VanderRoest JP, Johnson JB. Pyridine-directed carbon–carbon single bond activation: Rhodium-catalyzed decarbonylation of aryl and heteroaromatic ketones. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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22
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Hou SH, Prichina AY, Dong G. Deconstructive Asymmetric Total Synthesis of Morphine-Family Alkaloid (-)-Thebainone A. Angew Chem Int Ed Engl 2021; 60:13057-13064. [PMID: 33822455 PMCID: PMC8159902 DOI: 10.1002/anie.202103553] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Indexed: 01/13/2023]
Abstract
Herein, we describe the development of a deconstructive strategy for the first asymmetric synthesis of (-)-thebainone A, capitalizing on an enantioselective C-C bond activation and a C-O bond cleavage reaction. The rhodium-catalyzed asymmetric "cut-and-sew" transformation between sterically hindered trisubstituted alkenes and benzocyclobutenones allowed efficient construction of the fused A/B/C rings and the quaternary center of the natural product. The newly optimized conditions show broad substrate scope and excellent enantioselectivity (up to 99.5:0.5 er). Taking advantage of boron-mediated ether bond cleavage, we completed the synthesis of the morphine alkaloid (-)-thebainone A by two complementary routes.
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Affiliation(s)
- Si-Hua Hou
- Department of Chemistry, University of Chicago, Chicago, Illinois, 60637, USA)s
| | - Adriana Y Prichina
- Department of Chemistry, University of Chicago, Chicago, Illinois, 60637, USA)s
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois, 60637, USA)s
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23
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Zhang J, Wang X, Xu T. Regioselective activation of benzocyclobutenones and dienamides lead to anti-Bredt bridged-ring systems by a [4+4] cycloaddition. Nat Commun 2021; 12:3022. [PMID: 34021154 PMCID: PMC8140143 DOI: 10.1038/s41467-021-23344-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/26/2021] [Indexed: 02/04/2023] Open
Abstract
To the best of our knowledge, bridgehead carbon benzofused-bridged ring systems have previously not been accessible to the synthetic community. Here, we describe a formal type-II [4 + 4] cycloaddition approach that provides fully sp2-carbon embedded anti-Bredt bicyclo[5.3.1] skeletons through the Rh-catalyzed C1-C8 activation of benzocyclobutenones (BCBs) and their coupling with pedant dienamides. Variously substituted dienamides have been coupled with BCBs to provide a range of complex bicyclo[5.3.1] scaffolds (>20 examples, up to 89% yield). The bridged rings were further converted to polyfused hydroquinoline-containing tetracycles via a serendipitously discovered transannular 1,5-hydride shift/Prins-like cyclization/Schmidt rearrangement cascade.
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Affiliation(s)
- Jianyu Zhang
- Molecular Synthesis Center and Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Xi Wang
- Molecular Synthesis Center and Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Tao Xu
- Molecular Synthesis Center and Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.
- Laboratory for Marine Drugs and Bioproducts and Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology, Qingdao, China.
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24
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Zou D, Gan LS, Yang F, Wang JM, Li LL, Li J. Selective transition metal-free aroylation of diarylmethanes with 2-acyl-imidazolium salts via acyl C–C bond cleavage. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152532] [Citation(s) in RCA: 3] [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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25
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Luo H, Wang L, Shang S, Li G, Lv Y, Gao S, Dai W. Cobalt Nanoparticles-Catalyzed Widely Applicable Successive C-C Bond Cleavage in Alcohols to Access Esters. Angew Chem Int Ed Engl 2020; 59:19268-19274. [PMID: 32662588 DOI: 10.1002/anie.202008261] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Indexed: 12/21/2022]
Abstract
Selective cleavage and functionalization of C-C bonds have important applications in organic synthesis and biomass utilization. However, functionalization of C-C bonds by controlled cleavage remains difficult and challenging because they are inert. Herein, we describe an unprecedented efficient protocol for the breaking of successive C-C bonds in alcohols to form esters with one or multiple carbon atoms less using heterogeneous cobalt nanoparticles as catalyst with dioxygen as the oxidant. A wide range of alcohols including inactive long-chain alkyl aryl alcohols undergo smoothly successive cleavage of adjacent -(C-C)n - bonds to afford the corresponding esters. The catalyst was used for seven times without any decrease in activity. Characterization and control experiments disclose that cobalt nanoparticles are responsible for the successive cleavage of C-C bonds to achieve excellent catalytic activity, while the presence of Co-Nx has just the opposite effect. Preliminary mechanistic studies reveal that a tandem sequence reaction is involved in this process.
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Affiliation(s)
- Huihui Luo
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lianyue Wang
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Sensen Shang
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Guosong Li
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Ying Lv
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Shuang Gao
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Wen Dai
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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26
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Abstract
This article reviews synthetic transformations involving cleavage of a carbon-carbon bond of a four-membered ring, with a particular focus on the examples reported during the period from 2011 to the end of 2019. Most significant is the progress of catalytic reactions involving oxidative addition of carbon-carbon bonds onto transition metals or β-carbon elimination of transition metal alkoxides. When they are looked at from synthetic perspectives, they offer unique and efficient methods to build complex natural products and structures that are difficult to construct by conventional methods. On the other hand, β-scission of radical intermediates has also attracted increasing attention as an alternative elementary step to cleave carbon-carbon bonds. Its site-selectivity is often complementary to that of transition metal-catalyzed reactions. In addition, Lewis acid-mediated and thermally induced ring-opening of cyclobutanone derivatives has garnered renewed attention. On the whole, these examples demonstrate unique synthetic potentials of structurally strained four-membered ring compounds for the construction of organic skeletons.
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Affiliation(s)
- Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Naoki Ishida
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
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27
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Mu Y, Yuan Y, Wang Y, Xu M, Feng Y, Zhao Y, Li Y. Synthesis of indoline-fused eight-membered azaheterocycles through Zn-catalyzed dearomatization of indoles and subsequent base-promoted C-C activation. Org Biomol Chem 2020; 18:6916-6926. [PMID: 32869825 DOI: 10.1039/d0ob01626h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cascade reaction involving the Zn-catalyzed dearomatization of indoles, base-promoted ring-expansion and intramolecular SNAr reaction has been developed. This process realized a novel, atom economical and efficient synthesis of indoline-fused eight-membered azaheterocycles in a one pot manner.
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Affiliation(s)
- Yuanyang Mu
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
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28
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Luo H, Wang L, Shang S, Li G, Lv Y, Gao S, Dai W. Cobalt Nanoparticles‐Catalyzed Widely Applicable Successive C−C Bond Cleavage in Alcohols to Access Esters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008261] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Huihui Luo
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lianyue Wang
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Sensen Shang
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Guosong Li
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Ying Lv
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Shuang Gao
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Wen Dai
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
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29
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Ham JS, Park B, Son M, Roque JB, Jurczyk J, Yeung CS, Baik MH, Sarpong R. C-H/C-C Functionalization Approach to N-Fused Heterocycles from Saturated Azacycles. J Am Chem Soc 2020; 142:13041-13050. [PMID: 32627545 PMCID: PMC7773224 DOI: 10.1021/jacs.0c04278] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Herein we report the synthesis of substituted indolizidines and related N-fused bicycles from simple saturated cyclic amines through sequential C-H and C-C bond functionalizations. Inspired by the Norrish-Yang Type II reaction, C-H functionalization of azacycles is achieved by forming α-hydroxy-β-lactams from precursor α-ketoamide derivatives under mild, visible light conditions. Selective cleavage of the distal C(sp2)-C(sp3) bond in α-hydroxy-β-lactams using a Rh-complex leads to α-acyl intermediates which undergo sequential Rh-catalyzed decarbonylation, 1,4-addition to an electrophile, and aldol cyclization, to afford N-fused bicycles including indolizidines. Computational studies provide mechanistic insight into the observed positional selectivity of C-C cleavage, which depends strongly on the groups bound to Rh trans to the phosphine ligand.
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Affiliation(s)
- Jin Su Ham
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Bohyun Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Mina Son
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Jose B Roque
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Justin Jurczyk
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Charles S Yeung
- Disruptive Chemistry Fellow, Department of Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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30
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Subaramanian M, Ramar PM, Rana J, Gupta VK, Balaraman E. Catalytic conversion of ketones to esters via C(O)-C bond cleavage under transition-metal free conditions. Chem Commun (Camb) 2020; 56:8143-8146. [PMID: 32691781 DOI: 10.1039/d0cc03312j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic conversion of ketones to esters via C(O)-C bond cleavage under transition-metal free conditions is reported. This catalytic process proceeds under solvent-free conditions and offers an easy operational procedure, broad substrate scope with excellent selectivity, and reaction scalability.
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Affiliation(s)
- Murugan Subaramanian
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India.
| | - Palmurukan M Ramar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India.
| | - Jagannath Rana
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India.
| | - Virendra Kumar Gupta
- Polymer Synthesis and Catalysis Group, Reliance Research and Development Center, Reliance Industries Limited, Ghansoli, Navi Mumbai 400701, India.
| | - Ekambaram Balaraman
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, India.
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31
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Hou SH, Yu X, Zhang R, Deng L, Zhang M, Prichina AY, Dong G. Enantioselective Type II Cycloaddition of Alkynes via C-C Activation of Cyclobutanones: Rapid and Asymmetric Construction of [3.3.1] Bridged Bicycles. J Am Chem Soc 2020; 142:13180-13189. [PMID: 32619351 DOI: 10.1021/jacs.0c05647] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Synthesis of bridged scaffolds via Type II cyclization constitutes substantial challenges due to the intrinsic ring strain accumulated in reaction transition states. Catalytic enantioselective Type II-cyclization methods are even rarer. Here, we describe a detailed study of developing a Rh(I)-catalyzed enantioselective intramolecular Type II cyclization of alkynes via C-C activation of cyclobutanones. This method offers a rapid approach to access a wide range of functionalized [3.3.1]-bridged bicycles along with an exocyclic olefin and an all-carbon quaternary stereocenter. Excellent enantioselectivity has been achieved using a combination of cationic rhodium(I) and DTBM-segphos. Attributed to the redox neutral and strong acid/base-free reaction conditions, high chemoselectivity has also been observed. For the oxygen-tethered substrates, the reaction can proceed at room temperature. In addition, partial kinetic resolution has been achieved for substrates with existing stereocenters, forging interesting chiral tricyclic scaffolds. The methylalkyne-derived substrates gave unexpected dimeric structures in good yield with excellent enantioselectivity and complete diastereoselectivity. Furthermore, the bridged bicyclic products can be diversely functionalized through simple transformations. Finally, mechanistic studies reveal a surprising reaction pathway that involves forming a metal-stabilized anti-Bredt olefin intermediate.
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Affiliation(s)
- Si-Hua Hou
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Xuan Yu
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Rui Zhang
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Lin Deng
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Mengxi Zhang
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Adriana Y Prichina
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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32
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Cohen Y, Cohen A, Marek I. Creating Stereocenters within Acyclic Systems by C–C Bond Cleavage of Cyclopropanes. Chem Rev 2020; 121:140-161. [DOI: 10.1021/acs.chemrev.0c00167] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yair Cohen
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200009, Israel
| | - Anthony Cohen
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200009, Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City, Haifa 3200009, Israel
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33
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Lutz MDR, Morandi B. Metal-Catalyzed Carbon–Carbon Bond Cleavage of Unstrained Alcohols. Chem Rev 2020; 121:300-326. [DOI: 10.1021/acs.chemrev.0c00154] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Bill Morandi
- ETH Zürich, Vladimir-Prelog-Weg 3, HCI, 8093 Zürich, Switzerland
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34
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35
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Hou SH, Prichina AY, Zhang M, Dong G. Asymmetric Total Syntheses of Di- and Sesquiterpenoids by Catalytic C-C Activation of Cyclopentanones. Angew Chem Int Ed Engl 2020; 59:7848-7856. [PMID: 32086872 PMCID: PMC7219654 DOI: 10.1002/anie.201915821] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Indexed: 11/06/2022]
Abstract
To show the synthetic utility of the catalytic C-C activation of less strained substrates, described here are the collective and concise syntheses of the natural products (-)-microthecaline A, (-)-leubehanol, (+)-pseudopteroxazole, (+)-seco-pseudopteroxazole, pseudopterosin A-F and G-J aglycones, and (+)-heritonin. The key step in these syntheses involve a Rh-catalyzed C-C/C-H activation cascade of 3-arylcyclopentanones, which provides a rapid and enantioselective route to access the polysubstituted tetrahydronaphthalene cores presented in these natural products. Other important features include 1) the direct C-H amination of the tetralone substrate in the synthesis of (-)-microthecaline A, 2) the use of phosphoric acid to enhance efficiency and regioselectivity for problematic cyclopentanone substrates in the C-C activation reactions, and 3) the direct conversion of serrulatane into amphilectane diterpenes by an allylic cyclodehydrogenation coupling.
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Affiliation(s)
- Si-Hua Hou
- Department of Chemistry, University of Chicago, Chicago, IL, 60637, USA
| | | | - Mengxi Zhang
- Department of Chemistry, University of Chicago, Chicago, IL, 60637, USA
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, IL, 60637, USA
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36
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Zhou M, Luo M, Hu M, Li J. Palladium‐Catalyzed
Oxidative C≡C Triple Bond Cleavage of
2‐Alkynyl
Carbonyl Compounds Toward 1,
2‐Dicarbonyl
Compounds
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000040] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ming‐Bo Zhou
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University Changsha Hunan 410081 China
| | - Mu‐Jia Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang Jiangxi 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha Hunan 410082 China
| | - Ming Hu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang Jiangxi 330063 China
| | - Jin‐Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang Jiangxi 330063 China
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University Changsha Hunan 410081 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha Hunan 410082 China
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37
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Huang J, Luo L, Xing N, Gu L, Li C, Han Q, Zheng S, He L. Novel synthesis of divergent aryl imidazoles from ketones involving copper-catalyzed α-amination and oxidative C-C bond cleavage. RSC Adv 2020; 10:13815-13819. [PMID: 35492973 PMCID: PMC9051655 DOI: 10.1039/d0ra01408g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 03/16/2020] [Indexed: 11/26/2022] Open
Abstract
A one-pot synthesis, initiated by a copper salt with inorganic (NH4)2CO3 as the nitrogen source, forms divergent aryl imidazole derivatives from ketones via α-amination and oxidative C-C bond cleavage reactions. The approach provides a simple and rapid synthesis of imidazole derivatives and has certain versatility.
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Affiliation(s)
- Jiangkun Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Lan Luo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Naiguo Xing
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Linghui Gu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Chen Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Qiao Han
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University Chengdu Sichuan 610041 P. R. China
| | - Shilong Zheng
- Department of Chemistry and RCMI Cancer Research Center, Xavier University of Louisiana New Orleans LA 70125 USA
| | - Ling He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University Chengdu Sichuan 610041 P. R. China
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38
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Yuan Y, Guo Z, Mu Y, Wang Y, Xu M, Li Y. Synthesis of Spiro[5.n (n=6–8)]heterocycles through Successive Ring‐Expansion/Indole C‐2 Functionalization. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901631] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yang Yuan
- School of Chemistry and Molecular EngineeringEast China Normal University 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Zixia Guo
- School of Chemistry and Molecular EngineeringEast China Normal University 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Yuanyang Mu
- School of Chemistry and Molecular EngineeringEast China Normal University 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Ye Wang
- School of Chemistry and Molecular EngineeringEast China Normal University 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Murong Xu
- School of Chemistry and Molecular EngineeringEast China Normal University 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Yanzhong Li
- School of Chemistry and Molecular EngineeringEast China Normal University 500 Dongchuan Road Shanghai 200241 People's Republic of China
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39
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Hou S, Prichina AY, Zhang M, Dong G. Asymmetric Total Syntheses of Di‐ and Sesquiterpenoids by Catalytic C−C Activation of Cyclopentanones. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915821] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Si‐Hua Hou
- Department of Chemistry University of Chicago Chicago IL 60637 USA
| | | | - Mengxi Zhang
- Department of Chemistry University of Chicago Chicago IL 60637 USA
| | - Guangbin Dong
- Department of Chemistry University of Chicago Chicago IL 60637 USA
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40
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Deng R, Zhan S, Li C, Gu Z. Hypervalent‐Iodine‐Mediated Carbon–Carbon Bond Cleavage and Dearomatization of 9
H
‐Fluoren‐9‐ols. Angew Chem Int Ed Engl 2020; 59:3093-3098. [DOI: 10.1002/anie.201913373] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 11/23/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Ruixian Deng
- Department of ChemistryCenter for Excellence in Molecular SynthesisHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Shuming Zhan
- Department of ChemistryCenter for Excellence in Molecular SynthesisHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Chunyu Li
- Department of ChemistryCenter for Excellence in Molecular SynthesisHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Zhenhua Gu
- Department of ChemistryCenter for Excellence in Molecular SynthesisHefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
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41
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Zhang T, Wu X, Li J. Theoretical Study of Rhodium‐Catalyzed C−C Activation of Cyclobutanones: Origin of Ligand‐Controlled Product Selectivity. ChemCatChem 2020. [DOI: 10.1002/cctc.201902069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tian Zhang
- Department of ChemistryJinan University Huangpu Road West 601 Guangzhou 510632 P. R. China
| | - Xiajun Wu
- Department of ChemistryJinan University Huangpu Road West 601 Guangzhou 510632 P. R. China
| | - Juan Li
- Department of ChemistryJinan University Huangpu Road West 601 Guangzhou 510632 P. R. China
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42
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Deng R, Zhan S, Li C, Gu Z. Hypervalent‐Iodine‐Mediated Carbon–Carbon Bond Cleavage and Dearomatization of 9
H
‐Fluoren‐9‐ols. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ruixian Deng
- Department of Chemistry Center for Excellence in Molecular Synthesis Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Shuming Zhan
- Department of Chemistry Center for Excellence in Molecular Synthesis Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Chunyu Li
- Department of Chemistry Center for Excellence in Molecular Synthesis Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
| | - Zhenhua Gu
- Department of Chemistry Center for Excellence in Molecular Synthesis Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 China
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43
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Zhang Y, Shen S, Fang H, Xu T. Total Synthesis of Galanthamine and Lycoramine Featuring an Early-Stage C-C and a Late-Stage Dehydrogenation via C-H Activation. Org Lett 2020; 22:1244-1248. [PMID: 31904968 DOI: 10.1021/acs.orglett.9b04337] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Herein, we report a novel strategy toward galanthamine and lycoramine. The concise synthesis was enabled by a Rh-catalyzed gram-scale C-C activation for the tetracyclic carbon framework and a regioselective Pd-catalyzed C-H activation for double-bond introduction. An aqueous-phase Beckmann rearrangement was performed for nitrogen atom insertion. Galanthamine and lycoramine were completed in 11 and 10 steps, respectively.
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Affiliation(s)
- Yuna Zhang
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts & Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology , Ocean University of China , Qingdao 266003 , China
| | - Shuna Shen
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts & Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology , Ocean University of China , Qingdao 266003 , China
| | - Hua Fang
- Technical Innovation Center for Utilization of Marine Biological Resources , Third Institute of Oceanography, Ministry of Natural Resources , Xiamen 361005 , China
| | - Tao Xu
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy, Laboratory for Marine Drugs and Bioproducts & Open Studio for Druggability Research of Marine Natural Products, Pilot National Laboratory for Marine Science and Technology , Ocean University of China , Qingdao 266003 , China
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44
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Xiong N, Zhang G, Sun X, Zeng R. Metal‐Metal Cooperation in Dinucleating Complexes Involving Late Transition Metals Directed towards Organic Catalysis. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900371] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ni Xiong
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Guoxiang Zhang
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Xiaolong Sun
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and TechnologyXi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Rong Zeng
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
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45
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Hu F, Wang L, Xu L, Li SS. Aromatization-driven deconstruction/refunctionalization of unstrained rings. Org Chem Front 2020. [DOI: 10.1039/d0qo00344a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Aromatization-driven ring-opening/functionalization of common unstrained rings has been developed with the in situ generation of pre-aromatic fused spiro heterocycles as the key step.
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Affiliation(s)
- Fangzhi Hu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
- College of Chemistry and Molecular Engineering
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
- College of Chemistry and Molecular Engineering
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46
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Wang T, Lv S, Guo X, Li Z, Li J. Rhodium-catalyzed ene-cycloisomerization of allylic-sulfide-tethered alkylidenecyclopropanes: DFT analysis of origins of regio- and diastereo-selectivities. Org Chem Front 2020. [DOI: 10.1039/c9qo01187k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unconventional reaction mechanism can be responsible for the regio- and diastereo-selectivities of rhodium-catalyzed ene-cycloisomerization of allylic-sulfide-tethered alkylidenecyclopropanes.
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Affiliation(s)
- Ting Wang
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
| | - Shuting Lv
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
| | - Xianming Guo
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
| | - Zhanpeng Li
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
| | - Juan Li
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
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47
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Li J, Wang SY, Ji SJ. Nickel-Catalyzed Thiolation and Selenylation of Cycloketone Oxime Esters with Thiosulfonate or Seleniumsulfonate. J Org Chem 2019; 84:16147-16156. [DOI: 10.1021/acs.joc.9b02431] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jian Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
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48
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Zhu J, Chen PH, Lu G, Liu P, Dong G. Ruthenium-Catalyzed Reductive Cleavage of Unstrained Aryl-Aryl Bonds: Reaction Development and Mechanistic Study. J Am Chem Soc 2019; 141:18630-18640. [PMID: 31674779 PMCID: PMC7081785 DOI: 10.1021/jacs.9b11605] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cleavage of carbon-carbon bonds has been found in some important industrial processes, for example, petroleum cracking, and has inspired development of numerous synthetic methods. However, nonpolar unstrained C(aryl)-C(aryl) bonds remain one of the toughest bonds to be activated. As a detailed study of a fundamental reaction mode, here a full story is described about our development of a Ru-catalyzed reductive cleavage of unstrained C(aryl)-C(aryl) bonds. A wide range of biaryl compounds that contain directing groups (DGs) at 2,2' positions can serve as effective substrates. Various heterocycles, such as pyridine, quinoline, pyrimidine, and pyrazole, can be employed as DGs. Besides hydrogen gas, other reagents, such as Hantzsch ester, silanes, and alcohols, can be employed as terminal reductants. The reaction is pH neutral and free of oxidants; thus a number of functional groups are tolerated. Notably, a one-pot C-C activation/C-C coupling has been realized. Computational and experimental mechanistic studies indicate that the reaction involves a ruthenium(II) monohydride-mediated C(aryl)-C(aryl) activation and the resting state of the catalyst is a η4-coordinated ruthenium(II) dichloride complex, which could inspire development of other transformations based on this reaction mode.
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Affiliation(s)
- Jun Zhu
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Peng-hao Chen
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Gang Lu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
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49
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Huang G, Yin B. Palladium‐Catalyzed Cross‐Coupling of Furfuryl Alcohols with Arylboronic Acids
via
Aromatization‐Driven Carbon−Carbon Bond Cleavage to Synthesize 5‐Arylfurfuryl Alcohols and 2,5‐Diaryl Furans. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900799] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Guanghao Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 People's Republic of China
| | - Biaolin Yin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 People's Republic of China
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50
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Zhou MB, Li Y, Ouyang XH, Li JH. Transformations of N-arylpropiolamides to indoline-2,3-diones and acids via C≡C triple bond oxidative cleavage and C(sp2)–H functionalization. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9633-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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