1
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Quintavalla A, Carboni D, Brusa A, Lombardo M. Selective Hydrofunctionalization of N-Allenyl Derivatives with Heteronucleophiles Catalyzed by Brønsted Acids. J Org Chem 2024; 89:2320-2342. [PMID: 38298114 DOI: 10.1021/acs.joc.3c02322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
In this study, we present a novel and environmentally sustainable protocol for the γ-hydrofunctionalization of N-allenyl compounds using various heteronucleophiles catalyzed solely by simple Brønsted acids. The method displays remarkable attributes, highlighting its sustainability, efficiency, regio- and stereoselectivity, as well as its versatile applicability to diverse heteroatom-containing enamides. Notably, our approach eliminates the need for metal catalysts and toxic solvents, representing a significant advancement in greener chemistry practices. We demonstrate the broad scope of our protocol by successfully scaling up reactions to gram-scale syntheses, underscoring its robustness for potential industrial implementation. The resulting γ-heterosubstituted enamides offer new possibilities for further synthetic transformations, yielding highly functionalized compounds with diverse applications. Mechanistic investigations reveal the pivotal role of CSA as a catalyst, enabling alcohol addition via a covalent activation mode.
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Affiliation(s)
- Arianna Quintavalla
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
- Center for Chemical Catalysis-C3, Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
| | - Davide Carboni
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
- Center for Chemical Catalysis-C3, Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
| | - Alessandro Brusa
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
| | - Marco Lombardo
- Department of Chemistry "G. Ciamician", Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
- Center for Chemical Catalysis-C3, Alma Mater Studiorum-University of Bologna, Via P. Gobetti 85, 40129 Bologna, Italy
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2
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Heo N, Jung I, Kim DK, Han SH, Lee K, Lee PH. Sequential 1,3-N- to C- and 1,3-C- to C-Migration of Sulfonyl Groups through the Synthesis of 1,4-Diazepines from the Aza-[5 + 2] Cycloaddition of Indoloazomethine Ylides. Org Lett 2020; 22:6562-6567. [DOI: 10.1021/acs.orglett.0c02333] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Namrim Heo
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Ilyong Jung
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Dae Kyum Kim
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Sang Hoon Han
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Kooyeon Lee
- Department of Bio-Health Technology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Phil Ho Lee
- The Korean Academy of Science and Technology, Seongnam 13630, Republic of Korea
- Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
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3
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Sechi ML, Andrade M, Foy H, Pilkington M, Dudding T, Metallinos C. Stereoselective Synthesis of
N
‐Propargyl Alkynes and Axial Chiral
N
‐Allenes with Epimeric Pyrroloimidazolone Auxiliaries. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000574] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maria Laura Sechi
- Department of Chemistry Brock University 1812 Sir Isaac Brock Way St. Catharines, Ontario L2S 3A1 Canada
| | - Mateo Andrade
- Department of Chemistry Brock University 1812 Sir Isaac Brock Way St. Catharines, Ontario L2S 3A1 Canada
| | - Hayden Foy
- Department of Chemistry Brock University 1812 Sir Isaac Brock Way St. Catharines, Ontario L2S 3A1 Canada
| | - Melanie Pilkington
- Department of Chemistry Brock University 1812 Sir Isaac Brock Way St. Catharines, Ontario L2S 3A1 Canada
| | - Travis Dudding
- Department of Chemistry Brock University 1812 Sir Isaac Brock Way St. Catharines, Ontario L2S 3A1 Canada
| | - Costa Metallinos
- Department of Chemistry Brock University 1812 Sir Isaac Brock Way St. Catharines, Ontario L2S 3A1 Canada
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4
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Flynn AJ, Ford A, Maguire AR. Synthetic and mechanistic aspects of sulfonyl migrations. Org Biomol Chem 2020; 18:2549-2610. [DOI: 10.1039/c9ob02587a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sulfonyl migrations, frequently described as ‘unusual’ or ‘unexpected’, from the last 20 years, including 1,2-, 1,3-, 1,4-, 1,5-, 1,6- and 1,7-sulfonyl shifts, through either radical or polar processes, either inter- or intramolecularly are reviewed.
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Affiliation(s)
- Aaran J. Flynn
- School of Chemistry
- Analytical and Biological Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Cork
| | - Alan Ford
- School of Chemistry
- Analytical and Biological Research Facility
- University College Cork
- Cork
- Ireland
| | - Anita R. Maguire
- School of Chemistry and School of Pharmacy
- Analytical and Biological Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Cork
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5
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He S, Yang M, Kang L. Chemoselectivity-Tunable [5 + 2] Cycloadditions of Allenamides and Oxidopyryliums. HETEROCYCLES 2019. [DOI: 10.3987/com-19-14180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Wang B, Jin S, Sun S, Cheng J. Radical rearrangement of N-sulfonyl-N-aryl propynamides: proceeding with homolytic N–SO2 bond cleavage and 6-endo-dig cyclization toward 3-sulfonyl-2(1H)-quinolinones. Org Chem Front 2018. [DOI: 10.1039/c7qo01048f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A di-tert-butyl peroxide-promoted radical rearrangement of N-sulfonyl-N-aryl propynamides has been developed, giving 2-sulfonyl-3-aryl-2(1H)-quinolinones in moderate to good yields.
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Affiliation(s)
- Bingbing Wang
- School of Petrochemical Engineering
- and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Shengnan Jin
- School of Petrochemical Engineering
- and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Song Sun
- School of Petrochemical Engineering
- and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Jiang Cheng
- School of Petrochemical Engineering
- and Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- P. R. China
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7
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Cheng B, Xu J. Mechanistic insight into the thermal 1,3-chlorine migrations of N-chloroacetanilides under neutral conditions. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2016.1268137] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Baoxiang Cheng
- State Key Laboratory of Chemical Engineering Resource, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Engineering Resource, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
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8
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Zhu C, Feng C, Yamane M. Pd/Cu cooperative catalysis: an efficient synthesis of (3-isoindazolyl)allenes via cross-coupling of 2-alkynyl azobenzenes and terminal alkynes. Chem Commun (Camb) 2017; 53:2606-2609. [DOI: 10.1039/c7cc00562h] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We report a cooperative Pd/Cu-catalyzed synthesis of (3-isoindazolyl)allenes via cross-coupling of 2-alkynyl azobenzenes and terminal alkynes.
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Affiliation(s)
- Chuan Zhu
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211800
| | - Chao Feng
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials
- Nanjing Tech University
- Nanjing 211800
| | - Motoki Yamane
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
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9
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Mechanistic insight into thermal 1,3- and 1,5-sulfonyl migrations of N-arenesulfonylphenothiazines and N-arenesulfonylphenoxazines. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1661-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Ondet P, Joffrin A, Diaf I, Lemière G, Duñach E. Cycloisomerization of Allene–Enol Ethers under Bi(OTf)3 Catalysis. Org Lett 2015; 17:1002-5. [DOI: 10.1021/acs.orglett.5b00110] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pierrick Ondet
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
| | - Amélie Joffrin
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
| | - Ilhem Diaf
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
| | - Gilles Lemière
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
| | - Elisabet Duñach
- Institut de Chimie
de Nice,
UMR 7272, Université Nice Sophia Antipolis, CNRS, Parc
Valrose, 06108 Nice
Cedex 2, France
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11
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Li H, Ma T, Li X, Zhao Z. Regio- and stereoselective synthesis of ensulfonamides/enamides via catalyst-free intermolecular addition of indoles/pyrroles/imidazole to allenamides. RSC Adv 2015. [DOI: 10.1039/c5ra10569b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
A catalyst-free intermolecular addition of indoles, pyrroles, and imidazole to allenamides is reported. The reaction proceeds smoothly and provides a series of (E)-ensulfonamide/enamide derivatives in high yields with excellent regioselectivity.
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Affiliation(s)
- Honghe Li
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- PR China
| | - Ting Ma
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- PR China
| | - Xiaoxiao Li
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- PR China
| | - Zhigang Zhao
- College of Chemistry and Environmental Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- PR China
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12
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Zhu Y, Hong JJ, Zhou YB, Xiao YW, Lin M, Zhan ZP. Selective synthesis of 4-(sulfonyl)-methyl-1H-pyrazoles and (E)-4,5-dihydro-1H-pyrazoles from N-allenic sulfonylhydrazones. Org Biomol Chem 2014; 12:3797-801. [DOI: 10.1039/c4ob00550c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Selective synthesis of 4-(sulfonyl)-methyl-1H-pyrazoles and (E)-4,5-dihydro-1H-pyrazoles from N-allenic sulfonylhydrazones with sulfonyl group migrations has been developed.
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Affiliation(s)
- Yu Zhu
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen, People's Republic of China
| | - Jun-Jie Hong
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen, People's Republic of China
| | - Yun-Bin Zhou
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen, People's Republic of China
| | - Yu-Wei Xiao
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen, People's Republic of China
| | - Min Lin
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen, People's Republic of China
| | - Zhuang-Ping Zhan
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen, People's Republic of China
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13
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Stark DG, Morrill LC, Yeh PP, Slawin AMZ, O'Riordan TJC, Smith AD. Isothiourea-Mediated One-Pot Synthesis of Functionalized Pyridines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306786] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Stark DG, Morrill LC, Yeh PP, Slawin AMZ, O'Riordan TJC, Smith AD. Isothiourea-mediated one-pot synthesis of functionalized pyridines. Angew Chem Int Ed Engl 2013; 52:11642-6. [PMID: 24106063 PMCID: PMC4065352 DOI: 10.1002/anie.201306786] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Indexed: 11/07/2022]
Abstract
Acids to bases: The synthesis of 2,4,6-trisubstituted pyridines from (phenylthio)acetic acid and a range of α,β-unsaturated ketimines is reported. This process proceeds by intermolecular Michael addition/lactamization, thiophenol elimination, and N- to O-sulfonyl migration, giving 2-sulfonate-substituted pyridines which are readily derivatized to generate structural diversity.
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Affiliation(s)
- Daniel G Stark
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST (UK) http://ch-www.st-andrews.ac.uk/staff/ads/group/
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15
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Mertens MD, Pietsch M, Schnakenburg G, Gütschow M. Regioselective Sulfonylation and N- to O-Sulfonyl Migration of Quinazolin-4(3H)-ones and Analogous Thienopyrimidin-4(3H)-ones. J Org Chem 2013; 78:8966-79. [DOI: 10.1021/jo4010876] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Matthias D. Mertens
- Pharmaceutical
Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg
4, D-53121 Bonn, Germany
| | - Markus Pietsch
- Pharmaceutical
Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg
4, D-53121 Bonn, Germany
| | - Gregor Schnakenburg
- Institute
of Inorganic Chemistry, University of Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
| | - Michael Gütschow
- Pharmaceutical
Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg
4, D-53121 Bonn, Germany
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16
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Lu T, Lu Z, Ma ZX, Zhang Y, Hsung RP. Allenamides: a powerful and versatile building block in organic synthesis. Chem Rev 2013; 113:4862-904. [PMID: 23550917 PMCID: PMC4539064 DOI: 10.1021/cr400015d] [Citation(s) in RCA: 272] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ting Lu
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin, Madison, WI 53705
| | - Zhenjie Lu
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin, Madison, WI 53705
| | - Zhi-Xiong Ma
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin, Madison, WI 53705
| | - Yu Zhang
- Discovery Research, Dow AgroSciences LLC, Indianapolis, IN 46268
| | - Richard P. Hsung
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin, Madison, WI 53705
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17
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Zhu Y, Tang HT, Zhan ZP. Copper(I)-Catalyzed Stereoselective Synthesis of (1E,3E)-2- Sulfonyl-1,3-dienes fromN-Propargylic Sulfonohydrazones. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300126] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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18
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Wang D, Wang F, Song G, Li X. Diverse Reactivity in a Rhodium(III)-Catalyzed Oxidative Coupling ofN-Allyl Arenesulfonamides with Alkynes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206918] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Wang D, Wang F, Song G, Li X. Diverse Reactivity in a Rhodium(III)-Catalyzed Oxidative Coupling ofN-Allyl Arenesulfonamides with Alkynes. Angew Chem Int Ed Engl 2012; 51:12348-52. [DOI: 10.1002/anie.201206918] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Indexed: 11/08/2022]
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20
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Suárez-Pantiga S, Hernández-Díaz C, Piedrafita M, Rubio E, González JM. Phosphite-Gold(I)-Catalyzed [2+2] Intermolecular Cycloaddition of Enol Ethers with N-Allenylsulfonamides. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200043] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Sajna KV, Kotikalapudi R, Chakravarty M, Bhuvan Kumar NN, Swamy KCK. Cycloaddition Reactions of Allenylphosphonates and Related Allenes with Dialkyl Acetylenedicarboxylates, 1,3-Diphenylisobenzofuran, and Anthracene. J Org Chem 2011; 76:920-38. [DOI: 10.1021/jo102240u] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- K. V. Sajna
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - Ramesh Kotikalapudi
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - Manab Chakravarty
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - N. N. Bhuvan Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India
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22
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Yeom HS, So E, Shin S. Gold-Catalyzed Synthesis of 3-Pyrrolidinones and Nitrones from N-Sulfonyl Hydroxylamines via Oxygen-Transfer Redox and 1,3-Sulfonyl Migration. Chemistry 2011; 17:1764-7. [DOI: 10.1002/chem.201002863] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Indexed: 11/07/2022]
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23
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Saha A, Ranu BC. Transition metal-free activation of allylic acetates toward regioselective S-allylation of thiols. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.02.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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25
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Kuroda S, Horino Y, Hashimoto K. Synthesis of Functionalized Chromanes via a Formal [3+3]Cycloaddition of Allene Sulfonamides to Phenols. HETEROCYCLES 2010. [DOI: 10.3987/com-09-s(s)54] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Horino Y, Takata Y, Hashimoto K, Kuroda S, Kimura M, Tamaru Y. Gold-catalyzed intermolecular addition of alcohols toward the allenic bond of 4-vinylidene-2-oxazolidinones. Org Biomol Chem 2008; 6:4105-7. [DOI: 10.1039/b808921c] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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