101
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102
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Shit S, Devi N, Devi NR, Saikia AK. Stereoselective synthesis of hexahydrofuro[3,4-b]furan-4-ol and its dimer via tandem Prins and pinacol rearrangement. Org Biomol Chem 2019; 17:7398-7407. [PMID: 31347626 DOI: 10.1039/c9ob01353a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel synthetic route for the cyclization of ((4S,5R)-2,2-dimethyl-5-vinyl-1,3-dioxolan-4-yl)methanol with aldehydes to give hexahydrofuro[3,4-b]furan-4-ol and its dimer was developed. A variety of substituted furanol (up to 86%) and its bis-derivatives were obtained in good yields (up to 66%) with excellent diastereo- and enantio-selectivity mediated by borontrifluoride etherate. The dimer was conveniently converted into its corresponding monomer using aqueous zinc(ii) chloride in THF in quantitative yields.
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Affiliation(s)
- Sudip Shit
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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103
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Wang L, Tian Q, Bin C, Zhang G. Copper-catalyzed radical cascade reaction of isocyanate and ethers. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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104
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Pandey G, Laha R, Mondal PK. Heterocyclization involving benzylic C(sp 3)-H functionalization enabled by visible light photoredox catalysis. Chem Commun (Camb) 2019; 55:9689-9692. [PMID: 31347622 DOI: 10.1039/c9cc04287c] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general and efficient method for heterocyclization involving benzylic C(sp3)-H functionalization enabled by visible light photoredox catalysis to access a wide range of structurally diverse oxygen as well as nitrogen heterocycles up to a gram scale is reported. The potential application of this new methodology is demonstrated by the total synthesis of (-)-codonopsinine and (+)-centrolobine. Herein it is proposed that selectfluor, unlike a fluorinating reagent, acts as an oxidative quencher and a hydrogen radical acceptor.
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Affiliation(s)
- Ganesh Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, UP, India.
| | - Ramkrishna Laha
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, UP, India.
| | - Pradip Kumar Mondal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, UP, India.
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105
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Luo HY, Xie YY, Song XF, Dong JW, Zhu D, Chen ZM. Lewis base-catalyzed asymmetric sulfenylation of alkenes: construction of sulfenylated lactones and application to the formal syntheses of (-)-nicotlactone B and (-)-galbacin. Chem Commun (Camb) 2019; 55:9367-9370. [PMID: 31317982 DOI: 10.1039/c9cc04758a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the preparation of chiral sulfenylated lactones has been described based on Lewis base-catalyzed enantioselective sulfenylation of unsaturated carboxylic acids. The scope of this method includes two enantioselective cyclization reactions: 5-endo and 6-exo thiolactonizations of alkenes. Two types of lactones were obtained with up to 95% ee and 99% yield. Additionally, this methodology has been applied in the formal syntheses of bioactive natural products (-)-nicotlactone B and (-)-galbacin.
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Affiliation(s)
- Hui-Yun Luo
- School of Chemistry and Chemical Engineering & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Yu-Yang Xie
- School of Chemistry and Chemical Engineering & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Xu-Feng Song
- School of Chemistry and Chemical Engineering & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Jia-Wei Dong
- School of Chemistry and Chemical Engineering & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Deng Zhu
- School of Chemistry and Chemical Engineering & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Zhi-Min Chen
- School of Chemistry and Chemical Engineering & Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
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106
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Monasterolo C, Müller-Bunz H, Gilheany DG. Very short highly enantioselective Grignard synthesis of 2,2-disubstituted tetrahydrofurans and tetrahydropyrans. Chem Sci 2019; 10:6531-6538. [PMID: 31341606 PMCID: PMC6611064 DOI: 10.1039/c9sc00978g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/25/2019] [Indexed: 12/17/2022] Open
Abstract
Phenones with elongated chains are shown to be excellent substrates for ligand-promoted asymmetric Grignard synthesis of tertiary alcohols. In turn this enables the simple, short and highly enantioselective (up to 96% ee) preparation of chiral 2,2-disubstituted THFs and THPs. Thus, asymmetric addition of Grignard reagents to γ-chlorobutyrophenones and δ-chlorovalerophenones takes place in the presence of a chiral diaminocyclohexyl-derived tridentate ligand and subsequent base-promoted intramolecular cyclisation occurs with complete retention of asymmetry. As examples of the methodology, we report the shortest syntheses of gossonorol, γ-ethyl-γ-phenylbutyrolactone and δ-methyl-δ-tolylvalerolactone, the joint-shortest and flexible synthesis of boivinianin A and the shortest formal syntheses of boivinianin B and yingzhaosu C.
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Affiliation(s)
- Claudio Monasterolo
- Centre for Synthesis and Chemical Biology , School of Chemistry , University College Dublin , Belfield , Dublin 4 , Ireland . ;
| | - Helge Müller-Bunz
- Centre for Synthesis and Chemical Biology , School of Chemistry , University College Dublin , Belfield , Dublin 4 , Ireland . ;
| | - Declan G Gilheany
- Centre for Synthesis and Chemical Biology , School of Chemistry , University College Dublin , Belfield , Dublin 4 , Ireland . ;
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107
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Gao M, Zhao Y, Zhong C, Liu S, Liu P, Yin Q, Hu L. General [4 + 1] Cyclization Approach To Access 2,2-Disubstituted Tetrahydrofurans Enabled by Electrophilic Bifunctional Peroxides. Org Lett 2019; 21:5679-5684. [DOI: 10.1021/acs.orglett.9b02012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Min Gao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yukun Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Chen Zhong
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Shengshu Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Pengkang Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Qi Yin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
- Guangdong Provincial Key Lab of Nano-Micro Material Research, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
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108
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Sakamoto K, Hakamata A, Iwasaki A, Suenaga K, Tsuda M, Fuwa H. Total Synthesis, Stereochemical Revision, and Biological Assessment of Iriomoteolide-2a. Chemistry 2019; 25:8528-8542. [PMID: 30882926 DOI: 10.1002/chem.201900813] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/13/2019] [Indexed: 01/14/2023]
Abstract
Iriomoteolide-2a is a marine macrolide metabolite isolated from a cultured broth of the benthic dinoflagellate Amphidinium sp. HYA024 strain. This naturally occurring substance was reported to show remarkable cytotoxic activity against human cancer cell lines HeLa and DG-75 and in vivo antitumor activity against murine leukemia P388 cell line. Herein, the total synthesis, stereochemical revision, and biological assessment of iriomoteolide-2a are reported in detail. Total synthesis of the proposed structure 1 of iriomoteolide-2a featured a late-stage convergent assembly of three components by a Suzuki-Miyaura coupling, an esterification, and a ring-closing metathesis. However, the NMR data of synthetic 1 were not identical to those of the natural product. Careful analysis of the NMR data of the authentic material and synthesis/NMR analysis of appropriately designed model compounds led to consideration of four possible stereoisomers 2-5 as candidates for the correct structure. Accordingly, total syntheses of 2-5 were achieved by taking advantage of the convergent strategy, and comparison of the NMR spectra of synthetic 2-5 with those of the natural product led to the conclusion that 5 shows the correct relative configuration of iriomoteolide-2a. The absolute configuration of this natural product was finally established through chiral HPLC analysis of synthetic 5/ent-5 with the authentic sample. The antiproliferative activity of the synthetic compounds was assessed against HeLa and A549 cells to show that, in contrast to expectation, synthetic 5 and ent-5 were only marginally active in these cell lines. This work clearly underscores the vital role of total synthesis in the establishment of the structure and biological activity of natural products.
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Affiliation(s)
- Keita Sakamoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan.,Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Akihiro Hakamata
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Arihiro Iwasaki
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Kiyotake Suenaga
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Masashi Tsuda
- Center for Advanced Marine Core Research and Department of, Agriculture and Marine Science, Kochi University, Nankoku, Kochi, 783-8502, Japan
| | - Haruhiko Fuwa
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
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109
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Kurimoto Y, Nasu T, Fujii Y, Asano K, Matsubara S. Asymmetric Cycloetherification of in Situ Generated Cyanohydrins through the Concomitant Construction of Three Chiral Carbon Centers. Org Lett 2019; 21:2156-2160. [PMID: 30869909 DOI: 10.1021/acs.orglett.9b00462] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The organocatalytic enantio- and diastereoselective cycloetherification of in situ generated cyanohydrins through the concomitant construction of three chiral carbon centers is reported. This protocol facilitates the concise synthesis of optically active tetrahydropyran derivatives, which are ubiquitous scaffolds found in various bioactive compounds, through the simultaneous construction of multiple bonds and stereogenic centers, including tetrasubstituted chiral carbons. The resulting products also contain multiple synthetically important functional groups, which expand their possible usefulness as chiral building blocks.
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Affiliation(s)
- Yosuke Kurimoto
- Department of Material Chemistry, Graduate School of Engineering , Kyoto University , Kyotodaigaku-Katsura, Nishikyo , Kyoto 615-8510 , Japan
| | - Teruhisa Nasu
- Department of Material Chemistry, Graduate School of Engineering , Kyoto University , Kyotodaigaku-Katsura, Nishikyo , Kyoto 615-8510 , Japan
| | - Yuki Fujii
- Department of Material Chemistry, Graduate School of Engineering , Kyoto University , Kyotodaigaku-Katsura, Nishikyo , Kyoto 615-8510 , Japan
| | - Keisuke Asano
- Department of Material Chemistry, Graduate School of Engineering , Kyoto University , Kyotodaigaku-Katsura, Nishikyo , Kyoto 615-8510 , Japan
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate School of Engineering , Kyoto University , Kyotodaigaku-Katsura, Nishikyo , Kyoto 615-8510 , Japan
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110
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Klüppel A, Gille A, Karayel CE, Hiersemann M. Synthesis of a Diastereomer of the Marine Macrolide Lytophilippine A. Org Lett 2019; 21:2421-2425. [PMID: 30900455 DOI: 10.1021/acs.orglett.9b00722] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of a diastereomer of lytophilippine A required 22 longest linear steps using known building blocks. Cross-metathesis/asymmetric aldol addition and regioselective esterification/ring-closing metathesis served as efficient combi tools for scaffold construction. Detailed NMR investigations in different solvent (systems) provide evidence for a deep-seated configurational misassignment of the molecule named lytophilippine A.
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Affiliation(s)
- André Klüppel
- Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , 44227 Dortmund , Germany
| | - Annika Gille
- Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , 44227 Dortmund , Germany
| | - Ceren Ester Karayel
- Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , 44227 Dortmund , Germany
| | - Martin Hiersemann
- Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , 44227 Dortmund , Germany
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111
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Sawano T, Yamamoto H. Enantioselective Epoxidation of β,γ-Unsaturated Carboxylic Acids by a Cooperative Binuclear Titanium Complex. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00840] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Takahiro Sawano
- Molecular Catalyst Research Center, Chubu University, 1200, Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
| | - Hisashi Yamamoto
- Molecular Catalyst Research Center, Chubu University, 1200, Matsumoto-cho, Kasugai, Aichi 487-8501, Japan
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112
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Yang Y, Yuan F, Ren X, Wang G, Zhao W, Tang X, Guo M. Copper-Catalyzed Oxydifluoroalkylation of Hydroxyl-Containing Alkenes. J Org Chem 2019; 84:4507-4516. [DOI: 10.1021/acs.joc.9b00121] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yanyan Yang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Fangyuan Yuan
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xiangwei Ren
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Guangwei Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Wentao Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xiangyang Tang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Minjie Guo
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
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113
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Tomizuka A, Moriyama K. Bromoetherification of Alkenyl Alcohols by Aerobic Oxidation of Bromide: Asymmetric Synthesis of 2‐Bromomethyl 5‐Substituted Tetrahydrofurans. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Akihiko Tomizuka
- Department of Chemistry, Graduate School of Science, and Molecular Chirality Research CenterChiba University 1-33 Yayoi-cho, Inage-ku Chiba 263-8522 Japan
| | - Katsuhiko Moriyama
- Department of Chemistry, Graduate School of Science, and Molecular Chirality Research CenterChiba University 1-33 Yayoi-cho, Inage-ku Chiba 263-8522 Japan
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114
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Hoffmeyer P, Schneider C. Stereoselective Synthesis of 2,3,5-Trisubstituted Tetrahydrofurans Initiated by a Titanium-BINOLate-Catalyzed Vinylogous Aldol Reaction. J Org Chem 2019; 84:1079-1084. [PMID: 30575382 DOI: 10.1021/acs.joc.8b02828] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The enantioselective synthesis of 2,3,5-trisubstituted tetrahydrofurans 3 has been achieved using a chiral titanium-BINOL complex as catalyst for the vinylogous Mukaiyama aldol reaction of bis(silyl) diendiolate 1 and an aldehyde. The ensuing BF3·OEt2-mediated Prins-type cyclization with a second aldehyde gave rise to 2,3,5-substituted tetrahydrofurans 3 with generally good yields and excellent stereocontrol. In this process, three new σ-bonds and three new stereogenic centers were generated in a one-pot process.
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Affiliation(s)
- Patrick Hoffmeyer
- Institut für Organische Chemie , University of Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
| | - Christoph Schneider
- Institut für Organische Chemie , University of Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
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115
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Hu B, Deng L. Direct Catalytic Asymmetric Synthesis of Trifluoromethylated γ-Amino Esters/Lactones via Umpolung Strategy. J Org Chem 2019; 84:994-1005. [PMID: 30543752 PMCID: PMC6467775 DOI: 10.1021/acs.joc.8b02893] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Enabled by the discovery of new cinchonium salts and coadditives, a direct and efficient asymmetric access to trifluoromethylated γ-amino esters/lactones has been realized through the enantioselective and diastereoselective umpolung reaction of trifluoromethyl imines with acrylates or α,β-unsaturated lactones as carbon electrophiles. At 0.5-5.0 mol % catalyst loadings, the newly developed catalytic system activates a variety of imine substrates as unconventional nucleophiles to mediate highly chemo-, regio-, diastereo-, and enantioselective C-C bond forming reactions. The developed synthetic protocol represents an excellent strategy to target a series of versatile and enantiomerically enriched γ-amino esters/lactones in good to excellent yields from the readily available starting materials. Additionally, we found that the epi-vinyl catalysts based on cinchonidine and quinine promote a similarly high enantioselective reaction generating the opposite configuration of chiral products in a highly efficient manner, which allows convenient access to either the R- or S-enantiomer of the chiral amine products in high yields and excellent enantioselectivities.
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Affiliation(s)
- Bin Hu
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110, United States
| | - Li Deng
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110, United States
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116
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Mane KD, Mukherjee A, Vanka K, Suryavanshi G. Metal-Free Regioselective Cross Dehydrogenative Coupling of Cyclic Ethers and Aryl Carbonyls. J Org Chem 2019; 84:2039-2047. [DOI: 10.1021/acs.joc.8b03048] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kishor D. Mane
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
| | - Anagh Mukherjee
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
| | - Kumar Vanka
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
| | - Gurunath Suryavanshi
- Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
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117
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Liu J, Li MM, Qu BL, Lu LQ, Xiao WJ. A photoinduced Wolff rearrangement/Pd-catalyzed [3+2] cycloaddition sequence: an unexpected route to tetrahydrofurans. Chem Commun (Camb) 2019; 55:2031-2034. [DOI: 10.1039/c8cc10157d] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A novel sequential reaction that combines a visible light-induced Wolff rearrangement of α-diazoketones and a Pd-catalyzed [3+2] cycloaddition of vinyl cyclopropanes with the resulting ketenes is described in this work.
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Affiliation(s)
- Jie Liu
- CCNU-uOttawa Joint Research Centre
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
| | - Miao-Miao Li
- CCNU-uOttawa Joint Research Centre
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
| | - Bao-Le Qu
- CCNU-uOttawa Joint Research Centre
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
| | - Liang-Qiu Lu
- CCNU-uOttawa Joint Research Centre
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint Research Centre
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
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118
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Effective Synthesis of a Novel Tetrahydrofuran Containing Triterpenoid: 5′(Z)-Benzylidene-tetrahydrofurano[3,2-b]lup-20(29)-en-28-oate. MOLBANK 2018. [DOI: 10.3390/m1042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The title compound 5′(Z)-benzylidene-tetrahydrofurano[3,2-b]lup-20(29)-en-28-oate was synthesized with high chemo-, regio-, and stereoselectivity by 5-exo-dig cycloisomerization of methyl 2α-phenylpropynyl-3-oxolup-20(29)-en-28-oate with use of KN(SiMe3)2-DME. The novel betulinic acid derivative was fully characterized by conventional analytical methods and all proton and carbon signals have been completely assigned by 2D-NMR experiments.
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119
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Huang G, Liu M, Xiong F, Meng G, Tao Y, Wu Y, Peng H, Chen F. Chiral Syn-1,3-diol Derivatives via a One-Pot Diastereoselective Carboxylation/ Bromocyclization of Homoallylic Alcohols. iScience 2018; 9:513-520. [PMID: 30476789 PMCID: PMC6257933 DOI: 10.1016/j.isci.2018.11.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/20/2018] [Accepted: 11/06/2018] [Indexed: 12/04/2022] Open
Abstract
Chiral syn-1,3-diols are fundamental structural motifs in many natural products and drugs. The traditional Narasaka-Prasad diastereoselective reduction from chiral β-hydroxyketones is an important process for the synthesis of these functionalized syn-1,3-diols, but it is of limited applicability for large-scale synthesis because (1) highly diastereoselective control requires extra explosive and flammable Et2BOMe as a chelating agent under cryogenic conditions and (2) only a few functional syn-1,3-diol scaffolds are available. Those involving halogen-functionalized syn-1,3-diols are much less common. There are no reported diastereoselective reactions involving chemical fixation of CO2/bromocyclization of homoallylic alcohols to halogen-containing chiral syn-1,3-diols. Herein, we report an asymmetric synthesis of syn-1,3-diol derivatives via direct diastereoselective carboxylation/bromocyclization with both relative and absolute stereocontrol utilizing chiral homoallylic alcohols and CO2 in one pot with up to 91% yield, > 99% ee, and >19:1 dr. The power of this methodology has been demonstrated by the asymmetric synthesis of statins at the pilot plant scale. Diastereoselective carboxylation/bromocyclization Mild conditions Pilot-plant-scale synthesis of statins
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Affiliation(s)
- Guanxin Huang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Molecules, Shanghai 200433, P. R. China
| | - Minjie Liu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Molecules, Shanghai 200433, P. R. China
| | - Fangjun Xiong
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Molecules, Shanghai 200433, P. R. China
| | - Ge Meng
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Molecules, Shanghai 200433, P. R. China
| | - Yuan Tao
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Molecules, Shanghai 200433, P. R. China
| | - Yan Wu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Molecules, Shanghai 200433, P. R. China
| | - Haihui Peng
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Molecules, Shanghai 200433, P. R. China.
| | - Fener Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Molecules, Shanghai 200433, P. R. China.
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120
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Dubbu S, Bardhan A, Chennaiah A, Vankar YD. A Cascade of Prins Reaction and Pinacol-Type Rearrangement: Access to 2,3-Dideoxy-3C-Formyl β-C
-Aryl/Alkyl Furanosides and 2-Deoxy-2C-Branched β-C
-Aryl Furanoside. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Sateesh Dubbu
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Anirban Bardhan
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Ande Chennaiah
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Yashwant D. Vankar
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
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121
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Im H, Kang D, Choi S, Shin S, Hong S. Visible-Light-Induced C–O Bond Formation for the Construction of Five- and Six-Membered Cyclic Ethers and Lactones. Org Lett 2018; 20:7437-7441. [DOI: 10.1021/acs.orglett.8b03166] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Honggu Im
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Dahye Kang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Soyeon Choi
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Sanghoon Shin
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
| | - Sungwoo Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea
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122
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A protecting-group-free synthesis of arbusculone, andirolactone, pinnatolide, ipomolactone, cyclocapitelline and isocyclocapitelline. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.10.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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123
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124
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Heinrich M, Murphy JJ, Ilg MK, Letort A, Flasz J, Philipps P, Fürstner A. Total Synthesis of Putative Chagosensine. Angew Chem Int Ed Engl 2018; 57:13575-13581. [PMID: 30152031 DOI: 10.1002/anie.201808937] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Indexed: 12/22/2022]
Abstract
The marine macrolide chagosensine is the only natural product known to date that embodies a Z,Z-configured chloro-1,3-diene unit. This distinguishing substructure was prepared by a sequence of palladium-catalyzed 1,2-distannation of an alkyne precursor, regioselective Stille cross-coupling at the terminus of the resulting bisstannyl alkene with an elaborated alkenyl iodide, followed by chloro-destannation of the remaining internal site. The preparation of the required substrates centered on cobalt-catalyzed oxidative cyclization reactions of hydroxylated olefin precursors, which allowed the 2,5-trans-disubstituted tetrahydrofuran rings, embedded into each building block, to be formed with excellent selectivity. The highly strained macrolactone could ultimately be closed under forcing Yamaguchi conditions. Comparison of the spectral data of the synthetic sample with those of authentic chagosensine methyl ester confirmed that the structure of this intriguing compound has been mis-assigned by the isolation team.
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Affiliation(s)
- Marc Heinrich
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - John J Murphy
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Marina K Ilg
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Aurélien Letort
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Jakub Flasz
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Petra Philipps
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
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125
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Watanabe K, Hamada T, Moriyama K. Ring-Contraction Reaction of Substituted Tetrahydropyrans via Dehydrogenative Dual Functionalization by Nitrite-Catalyzed Double Activation of Bromine. Org Lett 2018; 20:5803-5807. [DOI: 10.1021/acs.orglett.8b02488] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuhiro Watanabe
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi-cho,
Inage-ku, Chiba 263-8522, Japan
- Molecular Chirality Research Center, Chiba University, 1-33 Yayoi-cho,
Inage-ku, Chiba 263-8522, Japan
| | - Tsukasa Hamada
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi-cho,
Inage-ku, Chiba 263-8522, Japan
- Molecular Chirality Research Center, Chiba University, 1-33 Yayoi-cho,
Inage-ku, Chiba 263-8522, Japan
| | - Katsuhiko Moriyama
- Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi-cho,
Inage-ku, Chiba 263-8522, Japan
- Molecular Chirality Research Center, Chiba University, 1-33 Yayoi-cho,
Inage-ku, Chiba 263-8522, Japan
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126
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Stereodivergent Synthesis of β,γ-Fused Bicyclic γ-Lactones via a Multicomponent Ring-Expansion Cascade. Chem 2018. [DOI: 10.1016/j.chempr.2018.08.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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127
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A highly selective Bi(OTf)3 mediated fragmentation-contraction of δ-ortholactones. A facile route to functionalized γ-lactones. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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128
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Lee S, Bae HY, List B. Can a Ketone Be More Reactive than an Aldehyde? Catalytic Asymmetric Synthesis of Substituted Tetrahydrofurans. Angew Chem Int Ed Engl 2018; 57:12162-12166. [PMID: 30126072 DOI: 10.1002/anie.201806312] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Indexed: 11/06/2022]
Abstract
O-heterocycles bearing tetrasubstituted stereogenic centers are prepared via catalytic chemo- and enantioselective nucleophilic additions to ketoaldehydes, in which the ketone reacts preferentially over the aldehyde. Five- and six-membered rings with both aromatic and aliphatic substituents, as well as an alkynyl substituent, are obtained. Moreover, 2,2,5-trisubstituted and 2,2,5,5-tetrasubstituted tetrahydrofurans are synthesized with excellent stereoselectivities. Additionally, the synthetic utility of the described method is demonstrated with a three-step synthesis of the side chain of anhydroharringtonine.
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Affiliation(s)
- Sunggi Lee
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Han Yong Bae
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
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129
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Lee S, Bae HY, List B. Kann ein Keton reaktiver als ein Aldehyd sein? Katalytische asymmetrische Synthese von substituierten Tetrahydrofuranen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806312] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sunggi Lee
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Han Yong Bae
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
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130
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Yun JJ, Liu XY, Deng W, Chu XQ, Shen ZL, Loh TP. Chromium(III)-Catalyzed Addition of Water and Alcohol to α,β-Unsaturated Ketones for the Synthesis of β-Hydroxyl and β-Alkoxyl Ketones in Aqueous Media. J Org Chem 2018; 83:10898-10907. [DOI: 10.1021/acs.joc.8b01584] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jin-Jin Yun
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Xuan-Yu Liu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Wei Deng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Xue-Qiang Chu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Zhi-Liang Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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131
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Mondal B, Balha M, Pan SC. Organocatalytic Asymmetric Synthesis of Highly Substituted Tetrahydrofurans and Tetrahydropyrans via Double Michael Addition Strategy. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Buddahdeb Mondal
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Megha Balha
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Subhas Chandra Pan
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
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132
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Gade NR, Iqbal J. Natural Product Inspired Topology Directed Synthesis of Hybrid Macrocyclic Compounds: A Simple Approach to Natural Product Analogues. ChemistrySelect 2018. [DOI: 10.1002/slct.201801117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Narendar Reddy Gade
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli; Hyderabad - 500046, Telangana India
- Department of Chemical and Life Science Engineering; Virginia Commonwealth University, Biotech Eight; Richmond, VA 23219 USA
| | - Javed Iqbal
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli; Hyderabad - 500046, Telangana India
- Cosmic Discoveries Private Ltd. MaRS Discovery District; 101 College Street Toronto M5G 0B7 Canada
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133
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Ali S, Milanezi H, Alves TMF, Tormena CF, Ferreira MAB. Cobalt-Catalyzed Stereoselective Synthesis of 2,5- trans-THF Nitrile Derivatives as a Platform for Diversification: Development and Mechanistic Studies. J Org Chem 2018; 83:7694-7713. [PMID: 29878776 DOI: 10.1021/acs.joc.8b00575] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A straightforward protocol integrating a sustainable approach for the synthesis of new 2,5- trans-THF nitrile derivatives enabling an easy diversification of its side chain scaffolds is described. The reaction tolerated different aromatic and alkyl substituents, affording the corresponding 2,5- trans-THFs in high diastereoselectivity. A detailed mechanistic study using DFT calculation reveals details of the ligand-exchange step, suggesting an inner-sphere syn attack to form the 2,5- trans stereochemistry as the most likely pathway, excluding the previous cation radical intermediate. The formation of a Co-C intermediate is suggested on the basis of the homolytic cleavage to give the previously proposed free carbon radical intermediate.
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Affiliation(s)
- Sajjad Ali
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry , Federal University of São Carlos - UFSCar , São Carlos, São Paulo 13565-905 , Brazil
| | - Henrique Milanezi
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry , Federal University of São Carlos - UFSCar , São Carlos, São Paulo 13565-905 , Brazil
| | - Tânia M F Alves
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry , Federal University of São Carlos - UFSCar , São Carlos, São Paulo 13565-905 , Brazil
| | | | - Marco A B Ferreira
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry , Federal University of São Carlos - UFSCar , São Carlos, São Paulo 13565-905 , Brazil
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134
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Yun J, Zhi M, Shi W, Chu X, Shen Z, Loh T. Indium(III)‐Catalyzed Hydration and Hydroalkoxylation of α,β‐Unsaturated Ketones in Aqueous Media. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800301] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jin‐Jin Yun
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing 211816 People's Republic of China
| | - Man‐Ling Zhi
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing 211816 People's Republic of China
| | - Wen‐Xiao Shi
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing 211816 People's Republic of China
| | - Xue‐Qiang Chu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing 211816 People's Republic of China
| | - Zhi‐Liang Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing 211816 People's Republic of China
| | - Teck‐Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Nanjing 211816 People's Republic of China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
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135
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Wales SM, Merisor EG, Adcock HV, Pearce CA, Strutt IR, Lewis W, Hamza D, Moody CJ. Diastereoselective Synthesis of Highly Substituted, Amino- and Pyrrolidino-Tetrahydrofurans as Lead-Like Molecular Scaffolds. Chemistry 2018; 24:8233-8239. [DOI: 10.1002/chem.201801046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 01/15/2023]
Affiliation(s)
- Steven M. Wales
- School of Chemistry; University Park; University of Nottingham; Nottingham NG7 2RD United Kingdom
| | - Elena G. Merisor
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Holly V. Adcock
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Christopher A. Pearce
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Ian R. Strutt
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - William Lewis
- School of Chemistry; University Park; University of Nottingham; Nottingham NG7 2RD United Kingdom
| | - Daniel Hamza
- Sygnature Discovery Ltd, Biocity; Pennyfoot Street Nottingham NG1 1GF United Kingdom
| | - Christopher J. Moody
- School of Chemistry; University Park; University of Nottingham; Nottingham NG7 2RD United Kingdom
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136
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Tsuji N, Kennemur JL, Buyck T, Lee S, Prévost S, Kaib PSJ, Bykov D, Farès C, List B. Activation of olefins via asymmetric Brønsted acid catalysis. Science 2018; 359:1501-1505. [PMID: 29599238 DOI: 10.1126/science.aaq0445] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/07/2017] [Accepted: 02/02/2018] [Indexed: 01/07/2023]
Abstract
The activation of olefins for asymmetric chemical synthesis traditionally relies on transition metal catalysts. In contrast, biological enzymes with Brønsted acidic sites of appropriate strength can protonate olefins and thereby generate carbocations that ultimately react to form natural products. Although chemists have recently designed chiral Brønsted acid catalysts to activate imines and carbonyl compounds, mimicking these enzymes to protonate simple olefins that then engage in asymmetric catalytic reactions has remained a substantial synthetic challenge. Here, we show that a class of confined and strong chiral Brønsted acids enables the catalytic asymmetric intramolecular hydroalkoxylation of unbiased olefins. The methodology gives rapid access to biologically active 1,1-disubstituted tetrahydrofurans, including (-)-Boivinianin A.
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Affiliation(s)
- Nobuya Tsuji
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Jennifer L Kennemur
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Thomas Buyck
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Sunggi Lee
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Sébastien Prévost
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Philip S J Kaib
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Dmytro Bykov
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.,Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Christophe Farès
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany.
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137
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Son J, Reidl TW, Kim KH, Wink DJ, Anderson LL. Generation and Rearrangement of
N
,
O
‐Dialkenylhydroxylamines for the Synthesis of 2‐Aminotetrahydrofurans. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800908] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jongwoo Son
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
| | - Tyler W. Reidl
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
| | - Ki Hwan Kim
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
| | - Donald J. Wink
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
| | - Laura L. Anderson
- Department of Chemistry University of Illinois at Chicago 845 W Taylor Street Chicago IL USA
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138
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Son J, Reidl TW, Kim KH, Wink DJ, Anderson LL. Generation and Rearrangement of N,O-Dialkenylhydroxylamines for the Synthesis of 2-Aminotetrahydrofurans. Angew Chem Int Ed Engl 2018; 57:6597-6600. [PMID: 29603566 DOI: 10.1002/anie.201800908] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/27/2018] [Indexed: 01/01/2023]
Abstract
A new diastereoselective route to 2-aminotetrahydrofurans has been developed from N,O-dialkenylhydroxylamines. These intermediates undergo a spontaneous C-C bond-forming [3,3]-sigmatropic rearrangement followed by a C-O bond-forming cyclization. A copper-catalyzed N-alkenylation of an N-Boc-hydroxylamine with alkenyl iodides, and a base-promoted addition of the resulting N-hydroxyenamines to an electron-deficient allene, provide modular access to these novel rearrangement precursors. The scope of this de novo synthesis of simple nucleoside analogues has been explored to reveal trends in diastereoselectivity and reactivity. In addition, a base-promoted ring-opening and Mannich reaction has been discovered to covert 2-aminotetrahydrofurans to cyclopentyl β-aminoacid derivatives or cyclopentenones.
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Affiliation(s)
- Jongwoo Son
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
| | - Tyler W Reidl
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
| | - Ki Hwan Kim
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
| | - Donald J Wink
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
| | - Laura L Anderson
- Department of Chemistry, University of Illinois at Chicago, 845 W Taylor Street, Chicago, IL, USA
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139
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A pilot-scale bioprocess to produce amphidinols from the marine microalga Amphidinium carterae: Isolation of a novel analogue. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.01.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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140
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Hamza-Reguig S, Bentabed-Ababsa G, Domingo LR, Ríos-Gutiérrez M, Philippot S, Fontanay S, Duval RE, Ruchaud S, Bach S, Roisnel T, Mongin F. A combined experimental and theoretical study of the thermal [3+2] cycloaddition of carbonyl ylides with activated alkenes. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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141
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Su YX, Dai WM. Synthesis of the C18–C26 tetrahydrofuran-containing fragment of amphidinolide C congeners via tandem asymmetric dihydroxylation and S N 2 cyclization. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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142
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Gross LJ, Stark CBW. Regioselective dehydration of α-hydroxymethyl tetrahydrofurans using Burgess' reagent under microwave irradiation. Org Biomol Chem 2018; 15:4282-4285. [PMID: 28485439 DOI: 10.1039/c7ob00607a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We here present a highly efficient and high yielding procedure for the preparation of 2-vinyl tetrahydrofurans starting from α-hydroxymethyl tetrahydrofurans. Best results for this dehydration were achieved using Burgess' reagent in dioxane under microwave irradiation. A range of functional groups as well as different cyclic and bicyclic frameworks were found to be compatible with the reaction conditions. The desired products were obtained within minutes in good to high yields and excellent regioselectivity.
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Affiliation(s)
- Leona J Gross
- Fachbereich Chemie, Institut für Organische Chemie, Universität Hamburg, Martin-Luther-King Platz 6, 20146 Hamburg, Germany.
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143
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Tata RR, Harmata M. Sulfinate Allenyl Carbenoids: Synthesis of 2,5‐Dihydrofurans by Domino Rearrangement and Cyclization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rama Rao Tata
- Department of Chemistry University of Missouri‐Columbia 601 South College Avenue 65211 Columbia Missouri USA
| | - Michael Harmata
- Department of Chemistry University of Missouri‐Columbia 601 South College Avenue 65211 Columbia Missouri USA
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144
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Wang Y, Deng L, Zhou J, Wang X, Mei H, Han J, Pan Y. Synthesis of Chiral Sulfonyl Lactones via Copper-Catalyzed Asymmetric Radical Reaction of DABCO⋅(SO2
). Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701532] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yang Wang
- School of Chemistry and Chemical Engineering; State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; Nanjing University; 210093 People's Republic of China
| | - Lingling Deng
- School of Chemistry and Chemical Engineering; State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; Nanjing University; 210093 People's Republic of China
| | - Jie Zhou
- Shenzhen Research Institute of Nanjing University; Shenzhen 518057 People's Republic of China
| | - Xiaochen Wang
- School of Chemistry and Chemical Engineering; State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; Nanjing University; 210093 People's Republic of China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering; State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; Nanjing University; 210093 People's Republic of China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering; State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; Nanjing University; 210093 People's Republic of China
| | - Yi Pan
- School of Chemistry and Chemical Engineering; State Key Laboratory of Coordination Chemistry; Jiangsu Key Laboratory of Advanced Organic Materials; Nanjing University; 210093 People's Republic of China
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145
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Alcaide B, Almendros P, Martínez del Campo T, Naranjo T. Gold-catalyzed preparation of annelated 2-azetidinones via divergent heterocyclization of enyne-tethered oxazolidines. Org Chem Front 2018. [DOI: 10.1039/c7qo00950j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The divergent and selective syntheses of two types of annelated β-lactams, namely, furan- and tetrahydropyridine-fused 2-azetidinones, have been accomplished directly from 2-azetidinone-tethered oxazolidine-enynes through gold catalysis.
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Affiliation(s)
- Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Pedro Almendros
- Instituto de Química Orgánica General
- Consejo Superior de Investigaciones Científicas
- IQOG-CSIC
- 28006 Madrid
- Spain
| | - Teresa Martínez del Campo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Teresa Naranjo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
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146
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Li B, Mai S, Song Q. Synthesis of fused benzimidazoles via successive nucleophilic additions of benzimidazole derivatives to arynes under transition metal-free conditions. Org Chem Front 2018. [DOI: 10.1039/c8qo00251g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
An expedient and efficient strategy was developed for the synthesis of benzimidazole derivatives from aryne precursors under transition metal-free conditions.
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Affiliation(s)
- Bingnan Li
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering & Material Sciences Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Shaoyu Mai
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering & Material Sciences Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering & Material Sciences Engineering at Huaqiao University
- Xiamen
- P. R. China
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147
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He FS, Cen X, Yang S, Zhang J, Xia H, Wu J. Intramolecular oxysulfonylation of alkenes with the insertion of sulfur dioxide under photocatalysis. Org Chem Front 2018. [DOI: 10.1039/c8qo00528a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Intramolecular oxysulfonylation of alkenes with the insertion of sulfur dioxide promoted by visible light is developed, leading to sulfonated tetrahydrofurans and related compounds in moderate to good yields.
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Affiliation(s)
- Fu-Sheng He
- Department of Biochemistry & Research Center of Clinical Pharmacy of The First Affiliated Hospital
- Zhejiang University School of Medicine
- Hangzhou 310058
- China
| | - Xufeng Cen
- Department of Biochemistry & Research Center of Clinical Pharmacy of The First Affiliated Hospital
- Zhejiang University School of Medicine
- Hangzhou 310058
- China
| | - Shuying Yang
- Department of Biochemistry & Research Center of Clinical Pharmacy of The First Affiliated Hospital
- Zhejiang University School of Medicine
- Hangzhou 310058
- China
| | - Jun Zhang
- Department of Chemistry
- Fudan University
- Shanghai 200438
- China
| | - Hongguang Xia
- Department of Biochemistry & Research Center of Clinical Pharmacy of The First Affiliated Hospital
- Zhejiang University School of Medicine
- Hangzhou 310058
- China
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200438
- China
- State Key Laboratory of Organometallic Chemistry
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148
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Halder J, Das D, Nanda S. A distinctive transformation based diversity oriented synthesis of small ring carbocycles and heterocycles from biocatalytically derived enantiopure α-substituted-β-hydroxyesters. Org Biomol Chem 2018; 16:2549-2575. [DOI: 10.1039/c8ob00233a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A series of structurally novel small ring carbocyclic and heterocyclic molecules were accessed in an enantiopure fashion.
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Affiliation(s)
- Joydev Halder
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur
- India
| | - Debabrata Das
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur
- India
| | - Samik Nanda
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur
- India
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149
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Zhu C, Wang CQ, Feng C. Recent advance in transition-metal-catalyzed oxidant-free 4+1 annulation through C–H bond activation. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.062] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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150
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Ghisu L, Melis N, Secci F, Caboni P, Arca M, Guillot R, Boddaert T, Aitken DJ, Frongia A. Synthesis of 2,2-bis(pyridin-2-yl amino)cyclobutanols and their conversion into 5-(pyridin-2-ylamino)dihydrofuran-2(3H)-ones. Org Biomol Chem 2017; 15:9779-9784. [PMID: 29135013 DOI: 10.1039/c7ob02567j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A two-step protocol is presented for the preparation of 5-(pyridin-2-ylamino)dihydrofuran-2(3H)-ones from 2-hydroxycyclobutanone and some 2-aminopyridines via a catalyst-free synthesis of 2,2-bis(pyridin-2-ylamino)cyclobutanols followed by Dess-Martin periodinane mediated ring expansion.
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Affiliation(s)
- Lorenza Ghisu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato, S.S. 554, Bivio per Sestu, I-09042, Monserrato, Cagliari, Italy.
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