51
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Li L, Li ZL, Gu QS, Wang N, Liu XY. A remote C-C bond cleavage-enabled skeletal reorganization: Access to medium-/large-sized cyclic alkenes. SCIENCE ADVANCES 2017; 3:e1701487. [PMID: 29119139 PMCID: PMC5669612 DOI: 10.1126/sciadv.1701487] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 09/29/2017] [Indexed: 06/07/2023]
Abstract
Although great success has been achieved in selective C-C bond cleavage via the intramolecular radical remote migration process of several carbon-based groups, the development of the radical-based remote vinyl migration process remains a formidable challenge because of the energetically unfavorable process. To address this problem, we report here, for the first time, a novel C-C bond reorganization strategy via an unprecedented radical 1,3-, 1,4-, or 1,5-vinyl migration triggered by various types of fluoroalkylation of alkenes for the efficient realization of 1,2-fluoroalkylalkenylation reaction. This strategy provides an expedient and broadly applicable platform to access skeletally and functionally diverse fluoroalkyl-containing medium- and large-sized cyclic alkenes with excellent chemo-, regio-, and stereoselectivity. The broad substrate scope, which covers distinctly electron-neutral or electron-deficient alkenyl migrating groups and various fluoroalkyl radical precursors, the excellent functional group tolerance, the remarkable selectivity, and the operational simplicity, as well as versatile transformations of the products, make this approach practical and attractive.
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52
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Zou N, Jiao JW, Feng Y, Chen CH, Liang C, Su GF, Mo DL. Diastereoselective Synthesis of Nine-Membered Heterocycles via
the Cycloaddition and Sequential Rearrangement of N
-Vinyl Nitrones with Isocyanates. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700685] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ning Zou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Ji-Wen Jiao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Yu Feng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Chun-Hua Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Gui-Fa Su
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
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53
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Wu X, Geng X, Zhao P, Wu YD, Wu AX. Iodine-Catalyzed Oxidative Coupling To Construct C–O Bonds for the Synthesis of 2,3-Dihydrooxepines. Org Lett 2017; 19:4584-4587. [DOI: 10.1021/acs.orglett.7b02182] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xia Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiao Geng
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Peng Zhao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yan-dong Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - An-xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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54
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Pd(II)-catalyzed aerobic intermolecular 1,4-diamination of conjugated dienes: A regioselective [4+4] annulation for the construction of medium-ring 1,6-benzodiazocine derivatives. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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55
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Donald JR, Unsworth WP. Ring-Expansion Reactions in the Synthesis of Macrocycles and Medium-Sized Rings. Chemistry 2017; 23:8780-8799. [DOI: 10.1002/chem.201700467] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 01/20/2023]
Affiliation(s)
- James R. Donald
- Department of Chemistry; University of York; Heslington, York YO10 5DD UK
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56
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Zhou B, Li L, Zhu XQ, Yan JZ, Guo YL, Ye LW. Yttrium-Catalyzed Intramolecular Hydroalkoxylation/Claisen Rearrangement Sequence: Efficient Synthesis of Medium-Sized Lactams. Angew Chem Int Ed Engl 2017; 56:4015-4019. [PMID: 28267264 DOI: 10.1002/anie.201700596] [Citation(s) in RCA: 122] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Indexed: 12/26/2022]
Abstract
An efficient yttrium-catalyzed intramolecular hydroalkoxylation/Claisen rearrangement sequence has been achieved, thus enabling facile access to a diverse array of valuable medium-sized lactams. Furthermore, a mechanistic rationale for this novel cascade reaction is well supported by a variety of control experiments.
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Affiliation(s)
- Bo Zhou
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Long Li
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin-Qi Zhu
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Juan-Zhu Yan
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Yi-Lin Guo
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Long-Wu Ye
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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57
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Zhou B, Li L, Zhu XQ, Yan JZ, Guo YL, Ye LW. Yttrium-Catalyzed Intramolecular Hydroalkoxylation/Claisen Rearrangement Sequence: Efficient Synthesis of Medium-Sized Lactams. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700596] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Bo Zhou
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Long Li
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Xin-Qi Zhu
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Juan-Zhu Yan
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Yi-Lin Guo
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
| | - Long-Wu Ye
- Collaborative Innovation Center of Chemistry for Energy Material, State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
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58
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Yang LC, Rong ZQ, Wang YN, Tan ZY, Wang M, Zhao Y. Construction of Nine-Membered Heterocycles through Palladium-Catalyzed Formal [5+4] Cycloaddition. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611474] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Li-Cheng Yang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zi-Qiang Rong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Ya-Nong Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zher Yin Tan
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Min Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
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59
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Yang LC, Rong ZQ, Wang YN, Tan ZY, Wang M, Zhao Y. Construction of Nine-Membered Heterocycles through Palladium-Catalyzed Formal [5+4] Cycloaddition. Angew Chem Int Ed Engl 2017; 56:2927-2931. [DOI: 10.1002/anie.201611474] [Citation(s) in RCA: 213] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 01/02/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Li-Cheng Yang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zi-Qiang Rong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Ya-Nong Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zher Yin Tan
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Min Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
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60
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Zhu H, Jin W, He J, Zhang Y, Zhu G. Synthesis of (E)-α,β-Unsaturated CarbonylsviaSilver-Catalyzed Tandem Epoxide Rearrangement/Intermolecular Carbonyl- Heteroalkyne Metathesis. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600623] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hui Zhu
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
| | - Weiwei Jin
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
| | - Jiayao He
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
| | - Yan Zhang
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
| | - Gangguo Zhu
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 People's Republic of China
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61
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Ke D, Espinosa NÁ, Mallet-Ladeira S, Monot J, Martin-Vaca B, Bourissou D. Efficient Synthesis of Unsaturatedδ-and ε-Lactones/Lactams by Catalytic Cycloisomerization: When Pt Outperforms Pd. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600382] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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62
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Abstract
Electron-rich alkynes, such as ynamines, ynamides, and ynol ethers, are functional groups that possess significant potential in organic chemistry for the formation of carbon-carbon bonds. While the synthetic utility of ynamides has recently been expanded considerably, 1-alkynyl ethers, which possess many of the reactivity features of ynamides, have traditionally been far less investigated because of concerns about their stability. Like ynamides, ynol ethers are relatively unhindered to approach by functional groups present in the same or different molecules because of their linear geometry, and they can potentially form up to four new bonds in a single transformation. Ynol ethers also possess unique reactivity features that make them complementary to ynamides. Research over the past decade has shown that ynol ethers formed in situ from stable precursors engage in a variety of useful carbon-carbon bond-forming processes. Upon formation at -78 °C, allyl alkynyl ethers undergo a rapid [3,3]-sigmatropic rearrangement to form allyl ketene intermediates, which may be trapped with alcohol or amine nucleophiles to form γ,δ-unsaturated carboxylic acid derivatives. The process is stereospecific, takes place in minutes at cryogenic temperatures, and affords products containing (quaternary) stereogenic carbon atoms. Trapping of the intermediate allyl ketene with carbonyl compounds, epoxides, or oxetanes instead leads to complex α-functionalized β-, γ-, or δ-lactones, respectively. [3,3]-Sigmatropic rearrangement of benzyl alkynyl ethers also takes place at temperatures ranging from -78 to 60 °C to afford substituted 2-indanones via intramolecular carbocyclization of the ketene intermediate. tert-Butyl alkynyl ethers containing pendant di- and trisubstituted alkenes and enol ethers are stable to chromatographic isolation and undergo a retro-ene/[2 + 2] cycloaddition reaction upon mild thermolysis (90 °C) to afford cis-fused cyclobutanones and donor-acceptor cyclobutanones in good to excellent yields and diastereoselectivities. This process, which takes place under neutral conditions and proceeds through an aldoketene intermediate, obviates the need to employ moisture-sensitive and/or unstable acid chlorides under basic conditions for intramolecular [2 + 2] cycloaddition reactions. Furthermore, Lewis acid-catalyzed intramolecular condensations of both ethyl and tert-butyl ynol ethers with tethered acetals efficiently provide protected five-, six-, and seven-membered cyclic Baylis-Hilman adducts. Metalated ethoxyacetylene can also participate in multiple bond-forming reactions that avoid isolation of the alkynyl ether intermediate. Lewis acid-promoted tandem additions employing epoxides/oxetanes and carbonyl compounds give rise to (Z)-α-alkylidene and α-benzylidene lactones stereoselectively in high overall yields. Three new carbon-carbon bonds and a ring are formed in this atom-economical single-flask transformation, resulting in a significant increase in molecular complexity. This Account provides a detailed overview of these useful transformations with the intention of stimulating further interest in and research on ynol ethers and their application in organic synthesis.
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Affiliation(s)
- Thomas G. Minehan
- Department of Chemistry and
Biochemistry, California State University, Northridge, 18111 Nordhoff
Street, Northridge, California 91330, United States
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63
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Squalene-hopene cyclases-evolution, dynamics and catalytic scope. Curr Opin Struct Biol 2016; 41:73-82. [PMID: 27336183 DOI: 10.1016/j.sbi.2016.05.019] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 05/25/2016] [Accepted: 05/26/2016] [Indexed: 01/19/2023]
Abstract
Herein we highlight recent mechanistic findings on the impact of solvent dynamics on catalysis displayed by squalene-hopene cyclases (SHCs). These fascinating biocatalysts that appeared early during the evolution of terpene biosynthetic machineries exploit a catalytic aspartic acid donating the anti-oriented proton to the terminal CC double bond of pre-folded isoprenoid substrates. We review how the unusual strength of this Brønsted acid can be used to harness a plethora of non-natural protonation-driven reactions in a plastic enzyme fold. Moreover, recent results underline how the reaction termination by deprotonation or water addition is governed by the spatial location of water in the active site. Site-directed mutagenesis of amino acids located in the hydrophobic binding pocket allows for the generation of novel catalytic function by active site reshaping with relatively small enzyme libraries. A deepened understanding of triterpene cyclase dynamics in concert with chemical expertise thus have a great potential to allow for the biocatalytic manufacturing of tailored building bricks that would expand the chemical repertoire currently found in nature.
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64
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Sahani RL, Liu RS. Gold-catalyzed [4+3] and [4+4]-annulation reactions of t-butyl propiolate derivatives with epoxides and oxetanes for the construction of 1,4-dioxepane and 1,5-dioxocane cores. Chem Commun (Camb) 2016; 52:7482-5. [PMID: 27198065 DOI: 10.1039/c6cc02124g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Gold-catalyzed [4+n]-annulations (n = 3, 4) of tert-butyl propiolate derivatives with epoxides or oxetanes proceed smoothly to yield seven- or eight-membered oxacyclic products efficiently. In the context of the [4+3]-annulations, product analysis reveals a retention of stereochemistry upon the intramolecular SN2 attack of an epoxide. We also report the [4+5]-annulation between one tert-butyl propiolate and γ-lactol, to manifest the utility toward medium-sized rings.
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Affiliation(s)
- Rajkumar Lalji Sahani
- Department of Chemistry, National Tsing-Hua University, 101, Sec. 2, Kuang-Fu Rd. Hsinchu, 30013, Taiwan, Republic of China.
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65
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Song LJ, Ding S, Wang Y, Zhang X, Wu YD, Sun J. Ir-Catalyzed Regio- and Stereoselective Hydrosilylation of Internal Thioalkynes: A Combined Experimental and Computational Study. J Org Chem 2016; 81:6157-64. [DOI: 10.1021/acs.joc.6b00854] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Li-Juan Song
- Lab
of Computational Chemistry and Drug Design, Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Shengtao Ding
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Yong Wang
- HKUST Shenzhen Research Institute, Shenzhen 518057, China
| | - Xinhao Zhang
- Lab
of Computational Chemistry and Drug Design, Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yun-Dong Wu
- Lab
of Computational Chemistry and Drug Design, Laboratory of Chemical
Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Jianwei Sun
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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66
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Peña-López M, Neumann H, Beller M. Ruthenium pincer-catalyzed synthesis of substituted γ-butyrolactones using hydrogen autotransfer methodology. Chem Commun (Camb) 2016; 51:13082-5. [PMID: 26086048 DOI: 10.1039/c5cc01708d] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ruthenium pincer-catalyzed synthesis of γ-butyrolactones from 1,2-diols and malonates using borrowing-hydrogen methodology is reported. This regioselective domino-process takes place through catalytic C-C bond formation, followed by intramolecular transesterification. Herein, we show the Ru-MACHO-BH complex as a valuable catalyst in hydrogen autotransfer reactions.
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Affiliation(s)
- Miguel Peña-López
- Leibniz-Institute für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany.
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67
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Rao B, Tang J, Wei Y, Zeng X. Ring Expansion via Cleavage of Benzylic C−C Bonds Enabling Direct Synthesis of Medium Ring-Fused Benzocarbocycles. Chem Asian J 2016; 11:991-5. [DOI: 10.1002/asia.201600065] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Indexed: 01/31/2023]
Affiliation(s)
- Bin Rao
- Center for Organic Chemistry; Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710054 P. R. China
| | - Jinghua Tang
- Center for Organic Chemistry; Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710054 P. R. China
| | - Yu Wei
- Center for Organic Chemistry; Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710054 P. R. China
| | - Xiaoming Zeng
- Center for Organic Chemistry; Frontier Institute of Science and Technology; Xi'an Jiaotong University; Xi'an Shaanxi 710054 P. R. China
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68
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Ng K, Tran V, Minehan T. A Single-Flask Synthesis of α-Alkylidene and α-Benzylidene Lactones from Ethoxyacetylene, Epoxides/Oxetanes, and Carbonyl Compounds. Tetrahedron Lett 2016; 57:415-419. [PMID: 26744547 PMCID: PMC4698893 DOI: 10.1016/j.tetlet.2015.12.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Low temperature treatment of (ethoxyethynyl)lithium with epoxides or oxetanes in the presence of BF3•OEt2, followed by addition of aldehydes or ketones and warming to room temperature, affords structurally diverse five- and six-membered α-alkylidene and α-benzylidene lactones (5) in good to excellent yields. This one-pot process, in which three new carbon-carbon bonds and a ring are formed, affords substituted α,β-unsaturated lactones of predominantly Z-configuration. The reaction likely occurs via alkyne-carbonyl metathesis of a hydroxy-ynol ether intermediate, acid-promoted alkene E- to Z-isomerization, and lactonization.
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Affiliation(s)
- Kevin Ng
- Department of Chemistry and Biochemistry, California State University, Northridge, 18111 Nordhoff Street, Northridge, CA 91330, USA
| | - Vincent Tran
- Department of Chemistry and Biochemistry, California State University, Northridge, 18111 Nordhoff Street, Northridge, CA 91330, USA
| | - Thomas Minehan
- Department of Chemistry and Biochemistry, California State University, Northridge, 18111 Nordhoff Street, Northridge, CA 91330, USA
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69
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Chang W, Li J, Ren W, Shi Y. Pd-Catalyzed regioselective hydroesterification of 2-allylphenols to seven-membered lactones without external CO gas. Org Biomol Chem 2016; 14:3047-52. [DOI: 10.1039/c5ob02663f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effective Pd-catalyzed regioselective hydroesterification of 2-allylphenols with phenyl formate is described.
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Affiliation(s)
- Wenju Chang
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Chemistry for Life Sciences
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Jingfu Li
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Chemistry for Life Sciences
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Wenlong Ren
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Chemistry for Life Sciences
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Yian Shi
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Chemistry for Life Sciences
- Center for Multimolecular Organic Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
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70
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Verma A, Jana S, Durga Prasad C, Yadav A, Kumar S. Organoselenium and DMAP co-catalysis: regioselective synthesis of medium-sized halolactones and bromooxepanes from unactivated alkenes. Chem Commun (Camb) 2016; 52:4179-82. [DOI: 10.1039/c5cc10245f] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A co-catalytic system has been developed for the synthesis of medium-sized halolactones and bromooxepanes possessing high transannular strain. Mechanistic studies reveal that quaternary selenium intermediate is involved in catalysis.
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Affiliation(s)
- Ajay Verma
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Sadhan Jana
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Ch. Durga Prasad
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Abhimanyu Yadav
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
| | - Sangit Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER) Bhopal
- Bhopal
- India
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71
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Saito A, Tateishi K. Syntheses of Heterocycles via Alkyne-Carbonyl Metathesis of Unactivated Alkynes. HETEROCYCLES 2016. [DOI: 10.3987/rev-15-836] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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72
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Liu Y, Zhao P, Zhang B, Xi C. MeOTf-catalyzed annulation of aldehydes and arylalkynes leading to 2,3-disubstituted indanones. Org Chem Front 2016. [DOI: 10.1039/c6qo00253f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MeOTf-catalyzed arylalkyne–aldehyde metathesis and Nazarov cyclization represent a sustainable and atom-economical approach for the construction of indanones with high stereoselectivity.
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Affiliation(s)
- Yu Liu
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Peng Zhao
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Bo Zhang
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Chanjuan Xi
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
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73
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Wang W, Peng X, Wei F, Tung CH, Xu Z. Copper(I)-Catalyzed Interrupted Click Reaction: Synthesis of Diverse 5-Hetero-Functionalized Triazoles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509124] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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74
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Wang W, Peng X, Wei F, Tung CH, Xu Z. Copper(I)-Catalyzed Interrupted Click Reaction: Synthesis of Diverse 5-Hetero-Functionalized Triazoles. Angew Chem Int Ed Engl 2015; 55:649-53. [PMID: 26610884 DOI: 10.1002/anie.201509124] [Citation(s) in RCA: 170] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/07/2015] [Indexed: 12/16/2022]
Abstract
The 5-heterofunctionalized triazoles are important scaffolds in bioactive compounds, but current click reactions (CuAAC) cannot produce these core structures. A copper(I)-catalyzed interrupted click reaction to access diverse 5-functionalized triazoles is reported. Various 5-amino-, thio-, and selenotriazoles were readily assembled in one step in high yields. The reaction proceeds under mild conditions with complete regioselectivity. It also features a broad substrate scope and good functional group compatibility.
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Affiliation(s)
- Weiguo Wang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100 (China) http://opcl.sdu.edu.cn/Teacher.aspx?tid=4
| | - Xianglong Peng
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100 (China) http://opcl.sdu.edu.cn/Teacher.aspx?tid=4
| | - Fang Wei
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100 (China) http://opcl.sdu.edu.cn/Teacher.aspx?tid=4
| | - Chen-Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100 (China) http://opcl.sdu.edu.cn/Teacher.aspx?tid=4
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan, 250100 (China) http://opcl.sdu.edu.cn/Teacher.aspx?tid=4. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032 (P.R. China).
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75
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Mu WB, Zou Y, Wang QR, Goeke A. A novel synthetic route to rac -( Z )-recifeiolide from cyclooctanone and acetaldehyde. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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76
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Tang M, Tong L, Ju L, Zhai W, Hu Y, Yu X. Benzoic Acid Catalyzed Annulations of α-Amino Acids and Aromatic Aldehydes Containing an ortho-Michael Acceptor: Access to 2,5-Dihydro-1H-benzo[c]azepines and 10,11-Dihydro-5H-benzo[e]pyrrolo[1,2-a]azepines. Org Lett 2015; 17:5180-3. [PMID: 26488671 DOI: 10.1021/acs.orglett.5b02484] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | | | | | | | | | - Xinhong Yu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, and State Key Laboratory of Bioengineering Reactors, East China University of Science & Technology, Shanghai 200237, People’s Republic of China
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77
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Minami Y, Shiraishi Y, Kodama T, Kanda M, Yamada K, Anami T, Hiyama T. Alkynoxy-Directed C–H Functionalizations: Palladium(0)-Catalyzed Annulations of Alkynyl Aryl Ethers with Alkynes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150180] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yasunori Minami
- Research and Development Initiative, Chuo University
- JST, ACT-C
| | | | | | - Mayuko Kanda
- Department of Applied Chemistry, Chuo University
| | | | | | - Tamejiro Hiyama
- Research and Development Initiative, Chuo University
- JST, ACT-C
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78
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Jianwei Sun. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201502973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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79
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Jianwei Sun. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502973] [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]
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80
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Zhao W, Qian H, Li Z, Sun J. Catalytic Ring Expansion of Cyclic Hemiaminals for the Synthesis of Medium-Ring Lactams. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504926] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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81
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Zhao W, Qian H, Li Z, Sun J. Catalytic Ring Expansion of Cyclic Hemiaminals for the Synthesis of Medium-Ring Lactams. Angew Chem Int Ed Engl 2015; 54:10005-8. [PMID: 26136349 DOI: 10.1002/anie.201504926] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Indexed: 11/11/2022]
Abstract
A mild and efficient intermolecular ring-expansion approach was developed for the synthesis of medium-ring lactams by using siloxy alkynes. Key to success is the suitable combination of a superior catalyst and an exceptional nitrogen-protecting group. Control experiments indicated that the reaction is remarkably selective toward the desired lactam formation, even with many possible non-productive pathways.
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Affiliation(s)
- Wanxiang Zhao
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055 (China).,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR (China)
| | - Hui Qian
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR (China)
| | - Zigang Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055 (China).
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR (China).
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82
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Karroumi JE, Haib AE, Manoury E, Benharref A, Daran JC, Gouygou M, Urrutigoïty M. Selectivity controlled by ligand tuning in the palladium-catalysed cyclocarbonylation: Synthesis of new γ and δ lactones from a natural sesquiterpene. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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83
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Ding S, Song LJ, Wang Y, Zhang X, Chung LW, Wu YD, Sun J. Highly Regio- and Stereoselective Hydrosilylation of Internal Thioalkynes under Mild Conditions. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500372] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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84
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Ding S, Song LJ, Wang Y, Zhang X, Chung LW, Wu YD, Sun J. Highly Regio- and Stereoselective Hydrosilylation of Internal Thioalkynes under Mild Conditions. Angew Chem Int Ed Engl 2015; 54:5632-5. [DOI: 10.1002/anie.201500372] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Indexed: 11/09/2022]
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85
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Wang H, Negretti S, Knauff AR, Montgomery J. Exo-selective reductive macrocyclization of ynals. Org Lett 2015; 17:1493-6. [PMID: 25746060 DOI: 10.1021/acs.orglett.5b00381] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A general protocol for the highly exo-selective macrocyclization of ynals using a nickel/N-heterocyclic carbene catalyst system has been developed. A series of 10- to 21-membered macrocycles bearing an exomethylene substituent was synthesized in good yields with excellent regioselectivity (exo/endo >95:5). Very high levels of long-range diastereocontrol can also be achieved for some classes of macrocycles. Complementary to previously reported endo-selective macrocyclizations, this method provides accesses to exoalkylidene macrocycles from simple ynals in high selectivity.
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Affiliation(s)
- Hengbin Wang
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Solymar Negretti
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Allison R Knauff
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - John Montgomery
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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86
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Peña-López M, Neumann H, Beller M. Iron(II) Pincer-Catalyzed Synthesis of Lactones and Lactams through a Versatile Dehydrogenative Domino Sequence. ChemCatChem 2015. [DOI: 10.1002/cctc.201402967] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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87
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Qian B, Qiao C, Xie Y, Huang H. Iron-Catalyzed Alkenylation of Isochroman Acetals with Simple Alkenes. ChemCatChem 2014. [DOI: 10.1002/cctc.201402785] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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88
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Abstract
Siloxy alkynes are a family of versatile species in organic synthesis. This account reviews the annulation reactions of siloxy alkynes for the synthesis of a variety of carbo- and heterocyclic products. With various dipolarophiles or dipolarophile-like reaction partners, siloxy alkynes are capable of forming small (three- to six-membered) rings. Recently, we have expanded the scope to the synthesis of medium- and large-ring lactones, enabled by the design of new amphoteric molecules as well as a new ring-expansion strategy. These annulation reactions provide not only practically useful syntheses of cyclic molecules, but also important understanding of the fundamental reactivity of siloxy alkynes.
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Affiliation(s)
- Hui Qian
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
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89
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Gade NR, Iqbal J. A Common Synthetic Protocol for the Cyclic and Acyclic Core of Migrastatin, Isomigrastatin, and Dorrigocin via a Chiral β-Hydroxy-γ-butyrolactone Intermediate. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402830] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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90
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Sumaria CS, Türkmen YE, Rawal VH. Non-precious metals catalyze formal [4 + 2] cycloaddition reactions of 1,2-diazines and siloxyalkynes under ambient conditions. Org Lett 2014; 16:3236-9. [PMID: 24911346 PMCID: PMC4076001 DOI: 10.1021/ol501254h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
![]()
Copper(I)
and nickel(0) complexes catalyze the formal [4 + 2] cycloaddition
reactions of 1,2-diazines and siloxyalkynes, a reaction hitherto best
catalyzed by silver salts. These catalysts based on earth abundant
metals are not only competent, but the copper catalyst, in particular,
promotes cycloadditions of pyrido[2,3-d]pyridazine
and pyrido[3,4-d]pyridazine, enabling a new synthesis
of quinoline and isoquinoline derivatives, as well as the formal [2
+ 2] cycloaddition reaction of cyclohexenone with a siloxyalkyne.
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Affiliation(s)
- Chintan S Sumaria
- Department of Chemistry, The University of Chicago , 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
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91
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Ding S, Jia G, Sun J. Iridium-Catalyzed Intermolecular Azide-Alkyne Cycloaddition of Internal Thioalkynes under Mild Conditions. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309855] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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92
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Ding S, Jia G, Sun J. Iridium-catalyzed intermolecular azide-alkyne cycloaddition of internal thioalkynes under mild conditions. Angew Chem Int Ed Engl 2014; 53:1877-80. [PMID: 24474668 DOI: 10.1002/anie.201309855] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Indexed: 11/10/2022]
Abstract
An iridium-catalyzed azide-alkyne cycloaddition reaction (IrAAC) of electron-rich internal alkynes is described. It is the first efficient intermolecular AAC of internal thioalkynes. The reaction exhibits remarkable features, such as high efficiency and regioselectivity, mild reaction conditions, easy operation, and excellent compatibility with air and a broad spectrum of organic and aqueous solvents. It complements the well-known CuAAC and RuAAC click reactions.
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Affiliation(s)
- Shengtao Ding
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR (China)
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93
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Reignier T, de Berardinis V, Petit JL, Mariage A, Hamzé K, Duquesne K, Alphand V. Broadening the scope of Baeyer–Villiger monooxygenase activities toward α,β-unsaturated ketones: a promising route to chiral enol-lactones and ene-lactones. Chem Commun (Camb) 2014; 50:7793-6. [DOI: 10.1039/c4cc02541e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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94
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Allen AD, Tidwell TT. Structure and Mechanism in Ketene Chemistry. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2014. [DOI: 10.1016/b978-0-12-800256-8.00004-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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95
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Chen Z, Sun J. Enantio- and Diastereoselective Assembly of Tetrahydrofuran and Tetrahydropyran Skeletons with All-Carbon-Substituted Quaternary Stereocenters. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306801] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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96
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Chen Z, Sun J. Enantio- and Diastereoselective Assembly of Tetrahydrofuran and Tetrahydropyran Skeletons with All-Carbon-Substituted Quaternary Stereocenters. Angew Chem Int Ed Engl 2013; 52:13593-6. [DOI: 10.1002/anie.201306801] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Indexed: 11/12/2022]
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97
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Silver carboxylate promoted lactonization: a general method applicable to prepare medium and large-sized lactones without high dilution or slow addition. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.07.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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98
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Zhu L, Xi ZG, Lv J, Luo S. In(III)/PhCO2H Binary Acid Catalyzed Tandem [2 + 2] Cycloaddition and Nazarov Reaction between Alkynes and Acetals. Org Lett 2013; 15:4496-9. [DOI: 10.1021/ol4020464] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Lihui Zhu
- Beijing National Laboratory for Molecule Sciences (BNLMS), CAS Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Zhi-Guo Xi
- Beijing National Laboratory for Molecule Sciences (BNLMS), CAS Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Jian Lv
- Beijing National Laboratory for Molecule Sciences (BNLMS), CAS Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Sanzhong Luo
- Beijing National Laboratory for Molecule Sciences (BNLMS), CAS Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
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