1
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Ito M, Takishima Y, Ishikawa R, Kamimura M, Watanabe H, Konishi T, Higuchi K, Sugiyama S. Development of 3-triazenylaryne and its application to iterative aryne reactions via o-triazenylarylboronic acids. Chem Commun (Camb) 2023; 59:14249-14252. [PMID: 37947053 DOI: 10.1039/d3cc04878k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Herein, a novel aryne species, 3-triazenylaryne, was developed and its regioselectivity was revealed. Based on the regioselectivity, various alkyne moieties were introduced by iodoalkynylation, and further derivatization to o-triazenylarylboronic acids as 3-alkynylaryne precursors was enabled. Therefore, 3-triazenylaryne was developed as a divergent platform for the generation of various 3-alkynylarynes.
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Affiliation(s)
- Motoki Ito
- Meiji Pharmaceutical University, 2-522-1 Noshio Kiyose, Tokyo 204-8588, Japan.
| | - Yuta Takishima
- Meiji Pharmaceutical University, 2-522-1 Noshio Kiyose, Tokyo 204-8588, Japan.
| | - Rinto Ishikawa
- Meiji Pharmaceutical University, 2-522-1 Noshio Kiyose, Tokyo 204-8588, Japan.
| | - Mao Kamimura
- Meiji Pharmaceutical University, 2-522-1 Noshio Kiyose, Tokyo 204-8588, Japan.
| | - Hana Watanabe
- Meiji Pharmaceutical University, 2-522-1 Noshio Kiyose, Tokyo 204-8588, Japan.
| | - Takehiro Konishi
- Meiji Pharmaceutical University, 2-522-1 Noshio Kiyose, Tokyo 204-8588, Japan.
| | - Kazuhiro Higuchi
- Meiji Pharmaceutical University, 2-522-1 Noshio Kiyose, Tokyo 204-8588, Japan.
| | - Shigeo Sugiyama
- Meiji Pharmaceutical University, 2-522-1 Noshio Kiyose, Tokyo 204-8588, Japan.
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2
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Gharpure SJ, Fartade DJ, Nanda SK, Somani S. Hydroalkoxylation-Initiated Cascade on Sulfone-Tethered Aryl Alkynols Gives Cyclic and Spiro-Heterocyclic β-Ketosulfones. Org Lett 2023; 25:6155-6160. [PMID: 37561988 DOI: 10.1021/acs.orglett.3c02241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Serendipitous formation of cyclic β-ketosulfones is observed when sulfone-tethered arylalkynols are reacted with base. The reaction involves a base-promoted propargyl sulfone to the allene isomerization/intramolecular hydroalkoxylation/retro-oxa-Michael/6-endo-trig Michael addition cascade. Sulfone-tethered alkynyl acrylates gave stereoselective access to a diverse array of spirocyclic β-ketosulfone benzofuran/isochroman/indolines and sulfone-tethered bridged bicyclo[3.3.1]nonane. These cyclic β-ketosulfones could be readily elaborated into benzofuran-fused cyclic sulfones and tetracyclic spiroindoline.
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Affiliation(s)
- Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Dipak J Fartade
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Santosh K Nanda
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Shipra Somani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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3
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Swain M, Bunnell TB, Kim J, Kwon O. Dealkenylative Alkynylation Using Catalytic Fe II and Vitamin C. J Am Chem Soc 2022; 144:14828-14837. [PMID: 35929075 PMCID: PMC9731399 DOI: 10.1021/jacs.2c05980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this paper, we report the synthesis of alkyl-tethered alkynes through ozone-mediated and FeII-catalyzed dealkenylative alkynylation of unactivated alkenes in the presence of alkynyl sulfones. This one-pot reaction, which employs a combination of a catalytic FeII salt and l-ascorbic acid, proceeds under mild conditions with good efficiency, high stereoselectivity, and broad functional group compatibility. In contrast to our previous FeII-mediated reductive fragmentation of α-methoxyhydroperoxides, the FeII-catalyzed process was devised through a thorough kinetic analysis of the multiple competing radical (redox) pathways. We highlight the potential of this dealkenylative alkynylation through multiple post-synthetic transformations and late-stage diversifications of complex molecules, including natural products and pharmaceuticals.
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Affiliation(s)
- Manisha Swain
- Department of Chemistry and Biochemistry, University of California─Los Angeles, Los Angeles, California 90095-1569, United States
| | - Thomas B Bunnell
- Department of Chemistry and Biochemistry, University of California─Los Angeles, Los Angeles, California 90095-1569, United States
| | - Jacob Kim
- Department of Chemistry and Biochemistry, University of California─Los Angeles, Los Angeles, California 90095-1569, United States
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California─Los Angeles, Los Angeles, California 90095-1569, United States
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4
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Yang WL, Shang XY, Luo X, Deng WP. Enantioselective Synthesis of Spiroketals and Spiroaminals via Gold and Iridium Sequential Catalysis. Angew Chem Int Ed Engl 2022; 61:e202203661. [PMID: 35446472 DOI: 10.1002/anie.202203661] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/09/2022]
Abstract
The enantioselective cascade reaction between racemic 2-(1-hydroxyallyl)phenols and alkynols/alkynamides was realized by using a gold and iridium sequential catalytic system. In this procedure, the in situ generated exocyclic vinyl ethers or enamides undergo the asymmetric allylation/spiroketalization with π-ally-Ir amphiphilic species, which provides an efficient and straightforward access to spiroketals and spiroaminals with excellent enantioselectivities. Moreover, racemic 2-(1-hydroxyallyl)anilines were also suitable in this reaction along with a kinetic resolution process, affording enantioenriched spiroaminals and 2-(1-hydroxyallyl)anilines in good yields. The synthetic utility of this method has been demonstrated by efficient enantioselective synthesis of the analogue of Paecilospirone.
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Affiliation(s)
- Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Xin-Yu Shang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Xiaoyan Luo
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Wei-Ping Deng
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.,Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua, 321004, P. R. China
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5
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Yang WL, Shang XY, Luo X, Deng WP. Enantioselective Synthesis of Spiroketals and Spiroaminals via Gold and Iridium Sequential Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Wu-Lin Yang
- East China University of Science and Technology School of Pharmacy 130 Meilong Road 200237 Shanghai CHINA
| | - Xin-Yu Shang
- East China University of Science and Technology School of Pharmacy CHINA
| | - Xiaoyan Luo
- East China University of Science and Technology School of Pharmacy CHINA
| | - Wei-Ping Deng
- East China University of Science and Technology School of Pharmacy CHINA
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6
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Affiliation(s)
- Santosh K. Nanda
- Department of chemistry School of Applied Science Centurion University of Technology and Management Paralakhemundi Odisha 761211 India
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7
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Gharpure SJ, Nanda SK, Fartade DJ. Formal [4+2] Cycloaddition of
o
‐
Aza
‐Quinone Methide for the Synthesis of 1,4‐Heterocycle‐Fused Quinolines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
| | - Santosh K. Nanda
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
| | - Dipak J. Fartade
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
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8
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Cao Z, Li J, Sun Y, Zhang H, Mo X, Cao X, Zhang G. Photo-induced copper-catalyzed alkynylation and amination of remote unactivated C(sp 3)-H bonds. Chem Sci 2021; 12:4836-4840. [PMID: 34163735 PMCID: PMC8179574 DOI: 10.1039/d0sc05883a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 02/14/2021] [Indexed: 01/18/2023] Open
Abstract
A method for remote radical C-H alkynylation and amination of diverse aliphatic alcohols has been developed. The reaction features a copper nucleophile complex formed in situ as a photocatalyst, which reduces the silicon-tethered aliphatic iodide to an alkyl radical to initiate 1,n-hydrogen atom transfer. Unactivated secondary and tertiary C-H bonds at β, γ, and δ positions can be functionalized in a predictable manner.
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Affiliation(s)
- Zhusong Cao
- Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Jianye Li
- College of Chemistry, Central China Normal University (CCNU) 152 Luoyu Road Wuhan Hubei 430079 P. R. China
| | - Youwen Sun
- Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Hanwen Zhang
- Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Xueling Mo
- Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
| | - Xin Cao
- Zhongshan Hospital, Fudan University 180 Fenglin Road Shanghai 200032 P. R. China
| | - Guozhu Zhang
- Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- College of Chemistry, Central China Normal University (CCNU) 152 Luoyu Road Wuhan Hubei 430079 P. R. China
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9
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Gharpure SJ, Nanda SK, Fartade DJ, Vishwakarma DS. Domino Hydroalkoxylation‐[4+2]‐Cycloaddition for Stereoselective Synthesis of 1,4‐Heterocycle‐Fused Chromenes: Rapid Access to the [6‐6‐7‐6] Tetracyclic Core of Cytorhizhins B–D. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901565] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai – India
| | - Santosh K. Nanda
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai – India
| | - Dipak J. Fartade
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai – India
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10
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Lai Y, Nagaraju K, Gurubrahamam R, Chen K. Enantioselective Organocatalytic Synthesis of
δ
‐Lactone‐Fused 4‐Chromanones. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000667] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yu‐Ting Lai
- Department of Chemistry National Taiwan Normal University Taipei 11677 Taiwan R.O.C
| | - Koppanathi Nagaraju
- Department of Chemistry National Taiwan Normal University Taipei 11677 Taiwan R.O.C
| | - Ramani Gurubrahamam
- Department of Chemistry Indian Institute of Technology Jammu, Jagti, NH 44 Jammu (J&K) 181221 India
| | - Kwunmin Chen
- Department of Chemistry National Taiwan Normal University Taipei 11677 Taiwan R.O.C
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11
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Chen C, Ji J, Wang CJ, Jia AQ, Zhang QF. Coordination modes of salicylaldehyde derivatives in the ruthenium(II) nitrosyl and bis(2,2′-bipyridine) ruthenium(II) complexes. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1767289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Chong Chen
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui, P. R. China
| | - Jiao Ji
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui, P. R. China
| | - Chang-Jiu Wang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui, P. R. China
| | - Ai-Quan Jia
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui, P. R. China
| | - Qian-Feng Zhang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui, P. R. China
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12
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Garkhedkar AM, Gore BS, Hu WP, Wang JJ. Lewis Acid Catalyzed Atom-Economic Synthesis of C2-Substituted Indoles from o-Amido Alkynols. Org Lett 2020; 22:3531-3536. [PMID: 32275448 DOI: 10.1021/acs.orglett.0c00971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein we have disclosed a Zn(OTf)2 catalyzed synthesis of C2-alkyl substituted indole derivatives via unprecedented carbonyl group migration from o-amido alkynols. The key features of this protocol involve N,O-carbonyl group migration, broad substrate scope with varied functionality tolerance, moderate to good yields, and 100% atom economy. The crossover experiments proved that the migration is happening via an intramolecular pathway.
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Affiliation(s)
- Amol Milind Garkhedkar
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Babasaheb Sopan Gore
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Wan-Ping Hu
- Department of Biotechnology, Kaohsiung Medical University, No. 100 Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan First Road, Sanmin District, Kaohsiung City 807, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, No. 100 Tzyou First Road, Sanmin District, Kaohsiung City 807, Taiwan
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13
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Gharpure SJ, Vishwakarma DS. Lewis Acid Catalyzed Intramolecular [4+2] Cycloaddition of In Situ Generated Aza‐Quinone Methides for the Stereoselective Synthesis of Furo/pyrano[3,2‐
c
]tetrahydroquinolines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901598] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai – India
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14
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Gharpure SJ, Nanda SK, Fartade DJ. Expeditious diastereoselective synthesis of medium ring heterocycle-fused chromenes via tandem 8/9-endo-dig and 8-exo-dig hydroalkoxylation-formal-[4 + 2] cycloaddition. Org Biomol Chem 2019; 17:8806-8810. [PMID: 31556431 DOI: 10.1039/c9ob02030f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first examples of highly diastereoselective tandem 8/9-endo-dig and 8-exo-dig hydroalkoxylation-formal-[4 + 2] cycloaddition are described for the synthesis of medium ring heterocycle-fused chromenes. TMS-alkynols preferred the exo-dig mode of hydroalkoxylation over the endo-dig mode leading to spiro-cyclic chromenes. The method could be used for the synthesis of linearly-fused ladder-like polyethers. A thia-heterocycle-fused chromene could be transformed into a complex bridged tricyclic ketal by a tandem carbene-insertion-[2,3]-sigmatropic shift.
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Affiliation(s)
- Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India.
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15
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Gharpure SJ, Vishwakarma DS, Patel RK. TMSOTf mediated ‘5/6-endo-dig’ reductive hydroamination for the stereoselective synthesis of pyrrolidine and piperidine derivatives. Chem Commun (Camb) 2019; 55:6858-6861. [DOI: 10.1039/c9cc03127h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A TMSOTf mediated 5/6-endo-dig reductive hydroamination cascade on internal alkynylamines gave expedient, stereoselective access to pyrrolidine and piperidine derivatives. We also demonstrate that a protecting group on nitrogen has a profound effect on the reactivity as well as diastereoselectivity.
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Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai – 400076
- India
| | | | - Raj K. Patel
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai – 400076
- India
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16
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Qi B, Guo S, Zhang W, Yu X, Song C, Zhu J. Rh(III)-Catalyzed Enaminone-Directed Alkenyl C–H Activation for the Synthesis of Salicylaldehydes. Org Lett 2018; 20:3996-3999. [DOI: 10.1021/acs.orglett.8b01563] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bing Qi
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| | - Shan Guo
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| | - Wenjing Zhang
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| | - Xiaolong Yu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| | - Chao Song
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| | - Jin Zhu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
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17
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Xing JJ, Gao YN, Shi M. Phosphine-Initiated Cascade Annulation of β′-Acetoxy Allenoate and p
-Quinols: Access to Ring Fused Hexahydroindeno Furan Derivatives. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800319] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiao-Jiao Xing
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
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18
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Gharpure SJ, Vishwakarma DS, Nanda SK. Lewis Acid Mediated “endo-dig” Hydroalkoxylation–Reduction on Internal Alkynols for the Stereoselective Synthesis of Cyclic Ethers and 1,4-Oxazepanes. Org Lett 2017; 19:6534-6537. [DOI: 10.1021/acs.orglett.7b03241] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | | | - Santosh K. Nanda
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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