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Zhu JX, Chen ZC, Du W, Chen YC. Asymmetric Auto-Tandem Palladium Catalysis for 2,4-Dienyl Carbonates: Ligand-Controlled Divergent Synthesis. Angew Chem Int Ed Engl 2022; 61:e202200880. [PMID: 35156289 DOI: 10.1002/anie.202200880] [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: 01/18/2022] [Indexed: 01/16/2023]
Abstract
Developing new asymmetric auto-tandem catalysis processes, especially in a divergent manner, is highly attractive but extremely challenging. Presented herein is a palladium-catalyzed auto-tandem reaction between 2,4-dienyl carbonates and o-TsNH arylimines or trifluoroacetophenones that proceeds through a consecutive N-allylation, vinylogous addition, π-σ-π isomerization, and another N-allylation sequence. Importantly, switchable diastereodivergent synthesis could be achieved by tuning the chiral bisphosphine ligands, which led to the construction of a broad spectrum of fused tetrahydroquinoline architectures with moderate to excellent enantioselectivity. Ligand control even enabled effective access to regiodivergent azetidine or chemodivergent β-H elimination with fair enantioselectivity, further showing the versatility of the current auto-tandem catalysis.
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Affiliation(s)
- Jian-Xiang Zhu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Zhi-Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.,College of Pharmacy, Third Military Medical University, Chongqing, 400038, China
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2
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Zhu J, Chen Z, Du W, Chen Y. Asymmetric Auto‐Tandem Palladium Catalysis for 2,4‐Dienyl Carbonates: Ligand‐Controlled Divergent Synthesis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jian‐Xiang Zhu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Zhi‐Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
| | - Ying‐Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 China
- College of Pharmacy Third Military Medical University Chongqing 400038 China
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3
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Liu H, Hu Y, Wang Z, Tao H, Wang C. Synergistic Cu/Pd‐Catalyzed Asymmetric Allenylic Alkylation of Azomethine Ylides for the Construction of α‐Allene‐Substituted Nonproteinogenic α‐Amino Acids. Chemistry 2019; 25:8681-8685. [DOI: 10.1002/chem.201901046] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Hua‐Chao Liu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
| | - Yuan‐Zheng Hu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
| | - Zuo‐Fei Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
| | - Hai‐Yan Tao
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
| | - Chun‐Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
- State Key Laboratory of Elemento-organic ChemistryNankai University Tianjin 300071 P. R. China
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Groso EJ, Schindler CS. Recent advances in the application of ring-closing metathesis for the synthesis of unsaturated nitrogen heterocycles. SYNTHESIS-STUTTGART 2019; 51:1100-1114. [PMID: 31983781 PMCID: PMC6983305 DOI: 10.1055/s-0037-1611651] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This short review summarizes recent advances relating to the application of ring-closing olefin-olefin and carbonyl-olefin metathesis reactions towards the synthesis of unsaturated five- and six-membered nitrogen heterocycles. These developments include catalyst modifications and reaction designs that will enable access to more complex nitrogen heterocycles.
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Affiliation(s)
- Emilia J. Groso
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Corinna S. Schindler
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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5
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Nájera C, Beletskaya IP, Yus M. Metal-catalyzed regiodivergent organic reactions. Chem Soc Rev 2019; 48:4515-4618. [DOI: 10.1039/c8cs00872h] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review discusses metal-catalysed regiodivergent additions, allylic substitutions, CH-activation, cross-couplings and intra- or intermolecular cyclisations.
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Affiliation(s)
- Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
| | - Irina P. Beletskaya
- Chemistry Department
- M. V. Lomonosov Moscow State University
- 119992 Moscow
- Russia
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
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6
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith , Jaipur , India
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7
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Beccalli EM, Broggini G, Christodoulou MS, Giofrè S. Transition Metal-Catalyzed Intramolecular Amination and Hydroamination Reactions of Allenes. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2018. [DOI: 10.1016/bs.adomc.2018.02.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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8
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Joyce LM, Willis AC, Hyland CJT, Pyne SG. Gold- and Silver-Catalysed Cyclisation Reactions of β-Amino Allenes. Aust J Chem 2018. [DOI: 10.1071/ch18197] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Herein we report the formation of pyrrolines and tetrahydropyridines from the cyclisation reactions of β-amino allenes by both AuI and AgI catalysts in yields ranging from 5 to 70 %. AuI catalysts favour a 5-endo-dig cyclisation before rapid rearrangement to the 5-exo-dig product, while AgI favours a 6-endo-trig cyclisation. We also report the first known Ag2O catalysed cyclisation reaction of an allene which occurred in good yield (61 %).
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9
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Chavan SS, Supekar MV, Burate PA, Rupanwar BD, Shelke AM, Suryavanshi G. An efficient Sn(ii)-catalyzed one-pot synthesis of a 3-substituted azetidine-2,4-dione framework. Org Biomol Chem 2017; 15:2385-2391. [DOI: 10.1039/c7ob00294g] [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 novel Sn(ii)-catalyzed tandem cyclization reaction of aromatic aldehydes with ethyl cyanoacetate has been achieved to afford a series of 3-substituted azetidine-2,4-diones in good to excellent yields.
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Affiliation(s)
- Santosh S. Chavan
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune
- India
| | - Mrudul V. Supekar
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune
- India
| | - Pralhad A. Burate
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune
- India
| | - Bapurao D. Rupanwar
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune
- India
| | - Anil M. Shelke
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune
- India
| | - Gurunath Suryavanshi
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune
- India
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10
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Gazzola S, Beccalli EM, Bernasconi A, Borelli T, Broggini G, Mazza A. Palladium-Catalysed Carbo- and Hydroamination of Allenyl Ethers and Aminoallenes: Available Entry to Nitrogen-Containing Benzo-Fused Rings. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600720] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Silvia Gazzola
- Dipartimento di Scienza e Alta Tecnologia; Università degli Studi dell'Insubria; Via Valleggio 9 22100 Como Italy
| | - Egle M. Beccalli
- DISFARM; Sezione di Chimica Generale e Organica “A. Marchesini”; Università degli Studi di Milano; Via Venezian 21 20133 Milano Italy
| | - Alice Bernasconi
- DISFARM; Sezione di Chimica Generale e Organica “A. Marchesini”; Università degli Studi di Milano; Via Venezian 21 20133 Milano Italy
| | - Tea Borelli
- Dipartimento di Scienza e Alta Tecnologia; Università degli Studi dell'Insubria; Via Valleggio 9 22100 Como Italy
| | - Gianluigi Broggini
- Dipartimento di Scienza e Alta Tecnologia; Università degli Studi dell'Insubria; Via Valleggio 9 22100 Como Italy
| | - Alberto Mazza
- DISFARM; Sezione di Chimica Generale e Organica “A. Marchesini”; Università degli Studi di Milano; Via Venezian 21 20133 Milano Italy
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11
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Kundu P, Mondal A, Chowdhury C. A Palladium-Catalyzed Method for the Synthesis of 2-(α-Styryl)-2,3-dihydroquinazolin-4-ones and 3-(α-Styryl)-3,4-dihydro-1,2,4-benzothiadiazine-1,1-dioxide: Access to 2-(α-Styryl)quinazolin-4(3H)-ones and 3-(α-Styryl)-1,2,4-benzothiadiazine-1,1-dioxides. J Org Chem 2016; 81:6596-608. [DOI: 10.1021/acs.joc.6b01242] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Priyanka Kundu
- Organic & Medicinal Chemisty Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata-700032, India
| | - Amrita Mondal
- Organic & Medicinal Chemisty Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata-700032, India
| | - Chinmay Chowdhury
- Organic & Medicinal Chemisty Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata-700032, India
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12
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Recent Advances in Application of Amino Acids: Key Building Blocks in Design and Syntheses of Heterocyclic Compounds. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.02.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Mack DJ, Njardarson JT. Recent Advances in the Metal-Catalyzed Ring Expansions of Three- and Four-Membered Rings. ACS Catal 2013. [DOI: 10.1021/cs300771d] [Citation(s) in RCA: 242] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Daniel J. Mack
- Department of Chemistry and Chemical
Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Jon T. Njardarson
- Department of Chemistry and
Biochemistry, University of Arizona, 1306
E. University Blvd., Tucson, Arizona 85721, United States
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14
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Dual reactivity of O-α-allenyl esters under palladium(0) catalysis: From carbopalladation/allylic alkylation domino sequence to decarboxylative allenylation. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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16
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Alcaide B, Almendros P, Alonso JM, Quirós MT, Gadziński P. Gold- or Palladium-Catalyzed Allene Carbocyclization/Functionalization: Simple and Efficient Synthesis of Carbazoles. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100209] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Inuki S, Iwata A, Oishi S, Fujii N, Ohno H. Enantioselective Total Synthesis of (+)-Lysergic Acid, (+)-Lysergol, and (+)-Isolysergol by Palladium-Catalyzed Domino Cyclization of Allenes Bearing Amino and Bromoindolyl Groups. J Org Chem 2011; 76:2072-83. [DOI: 10.1021/jo102388e] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Akira Iwata
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Nobutaka Fujii
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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18
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l-Proline-catalyzed five-component domino reaction leading to multifunctionalized 1,2,3,4-tetrahydropyridines. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.10.041] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Beccalli EM, Bernasconi A, Borsini E, Broggini G, Rigamonti M, Zecchi G. Tunable Pd-Catalyzed Cyclization of Indole-2-carboxylic Acid Allenamides: Carboamination vs Microwave-Assisted Hydroamination. J Org Chem 2010; 75:6923-32. [DOI: 10.1021/jo101501u] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Egle M. Beccalli
- DISMAB, Sezione di Chimica Organica “A. Marchesini”, Università di Milano, via Venezian 21, 20133 Milano, Italy
| | - Alice Bernasconi
- DISMAB, Sezione di Chimica Organica “A. Marchesini”, Università di Milano, via Venezian 21, 20133 Milano, Italy
| | - Elena Borsini
- DISMAB, Sezione di Chimica Organica “A. Marchesini”, Università di Milano, via Venezian 21, 20133 Milano, Italy
| | - Gianluigi Broggini
- Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy
| | - Micol Rigamonti
- Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gaetano Zecchi
- Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy
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20
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Ye Y, Wang H, Fan R. Stereoselective Construction of Highly Functionalized Azetidines via a [2 + 2]-Cycloaddition. Org Lett 2010; 12:2802-5. [DOI: 10.1021/ol100885f] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Ye
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China, and Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Hua Wang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China, and Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China, and Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
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21
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Kammerer C, Prestat G, Madec D, Poli G. Phosphine-Free Palladium-Catalyzed Allene Carbopalladation/Allylic Alkylation Domino Sequence: A New Route to 4-(α-Styryl) γ-Lactams. Chemistry 2009; 15:4224-7. [DOI: 10.1002/chem.200900184] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Hansen CP, Jensen AA, Christensen JK, Balle T, Liljefors T, Frølund B. Novel acetylcholine and carbamoylcholine analogues: development of a functionally selective alpha4beta2 nicotinic acetylcholine receptor agonist. J Med Chem 2009; 51:7380-95. [PMID: 18989912 DOI: 10.1021/jm701625v] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of carbamoylcholine and acetylcholine analogues were synthesized and characterized pharmacologically at neuronal nicotinic acetylcholine receptors (nAChRs). Several of the compounds displayed low nanomolar binding affinities to the alpha4beta2 nAChR and pronounced selectivity for this subtype over alpha3beta4, alpha4beta4, and alpha7 nAChRs. The high nAChR activity of carbamoylcholine analogue 5d was found to reside in its R-enantiomer, a characteristic most likely true for all other compounds in the series. Interestingly, the pronounced alpha4beta2 selectivities exhibited by some of the compounds in the binding assays translated into functional selectivity. Compound 5a was a fairly potent partial alpha4beta2 nAChR agonist with negligible activities at the alpha3beta4 and alpha7 subtypes, thus being one of the few truly functionally selective alpha4beta2 nAChR agonists published to date. Ligand-protein docking experiments using homology models of the amino-terminal domains of alpha4beta2 and alpha3beta4 nAChRs identified residues Val111(beta2)/Ile113(beta4), Phe119(beta2)/Gln121(beta4), and Thr155(alpha4)/Ser150(alpha3) as possible key determinants of the alpha4beta2/alpha3beta4-selectivity displayed by the analogues.
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Affiliation(s)
- Camilla P Hansen
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, UniVersitetsparken 2, DK-2100 Copenhagen Ø, Denmark
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Beccalli EM, Broggini G, Clerici F, Galli S, Kammerer C, Rigamonti M, Sottocornola S. Palladium-Catalyzed Domino Carbopalladation/5-exo-Allylic Amination of α-Amino Allenamides: An Efficient Entry to Enantiopure Imidazolidinones. Org Lett 2009; 11:1563-6. [DOI: 10.1021/ol900171g] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Egle M. Beccalli
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy, and UPMC Univ Paris 06, UMR CNRS 7201 Institut Parisien de Chimie Moléculaire, FR2769, case 183, F-75005 Paris, France
| | - Gianluigi Broggini
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy, and UPMC Univ Paris 06, UMR CNRS 7201 Institut Parisien de Chimie Moléculaire, FR2769, case 183, F-75005 Paris, France
| | - Francesca Clerici
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy, and UPMC Univ Paris 06, UMR CNRS 7201 Institut Parisien de Chimie Moléculaire, FR2769, case 183, F-75005 Paris, France
| | - Simona Galli
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy, and UPMC Univ Paris 06, UMR CNRS 7201 Institut Parisien de Chimie Moléculaire, FR2769, case 183, F-75005 Paris, France
| | - Claire Kammerer
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy, and UPMC Univ Paris 06, UMR CNRS 7201 Institut Parisien de Chimie Moléculaire, FR2769, case 183, F-75005 Paris, France
| | - Micol Rigamonti
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy, and UPMC Univ Paris 06, UMR CNRS 7201 Institut Parisien de Chimie Moléculaire, FR2769, case 183, F-75005 Paris, France
| | - Silvia Sottocornola
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, Dipartimento di Scienze Chimiche e Ambientali, Università dell’Insubria, via Valleggio 11, 22100 Como, Italy, and UPMC Univ Paris 06, UMR CNRS 7201 Institut Parisien de Chimie Moléculaire, FR2769, case 183, F-75005 Paris, France
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24
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Inuki S, Oishi S, Fujii N, Ohno H. Total synthesis of (+/-)-lysergic acid, lysergol, and isolysergol by palladium-catalyzed domino cyclization of amino allenes bearing a bromoindolyl group. Org Lett 2008; 10:5239-42. [PMID: 18956869 DOI: 10.1021/ol8022648] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ergot alkaloids and their synthetic analogs have been reported to exhibit broad biological activity. We investigated direct construction of the C/D ring system of ergot alkaloids based on palladium-catalyzed domino cyclization of amino allenes. With this biscyclization as the key step, total synthesis of (+/-)-lysergic acid, (+/-)-lysergol, and (+/-)-isolysergol was achieved.
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Affiliation(s)
- Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
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25
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Brandi A, Cicchi S, Cordero FM. Novel Syntheses of Azetidines and Azetidinones. Chem Rev 2008; 108:3988-4035. [DOI: 10.1021/cr800325e] [Citation(s) in RCA: 395] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Alberto Brandi
- Dipartimento di Chimica Organica “Ugo Schiff”, Laboratorio di Progettazione, Sintesi e Studio di Eterocicli Biologicamente Attivi - HeteroBioLab, Università degli Studi di Firenze, via della Lastruccia 13, 50019 Sesto F.no (FI), Italy
| | - Stefano Cicchi
- Dipartimento di Chimica Organica “Ugo Schiff”, Laboratorio di Progettazione, Sintesi e Studio di Eterocicli Biologicamente Attivi - HeteroBioLab, Università degli Studi di Firenze, via della Lastruccia 13, 50019 Sesto F.no (FI), Italy
| | - Franca M. Cordero
- Dipartimento di Chimica Organica “Ugo Schiff”, Laboratorio di Progettazione, Sintesi e Studio di Eterocicli Biologicamente Attivi - HeteroBioLab, Università degli Studi di Firenze, via della Lastruccia 13, 50019 Sesto F.no (FI), Italy
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26
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Tsukamoto H, Kondo Y. Palladium(0)-Catalyzed Alkynyl and Allenyl Iminium Ion Cyclizations Leading to 1,4-Disubstituted 1,2,3,6-Tetrahydropyridines. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800823] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Tsukamoto H, Kondo Y. Palladium(0)-Catalyzed Alkynyl and Allenyl Iminium Ion Cyclizations Leading to 1,4-Disubstituted 1,2,3,6-Tetrahydropyridines. Angew Chem Int Ed Engl 2008; 47:4851-4. [DOI: 10.1002/anie.200800823] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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28
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Cheng X, Ma S. [Pd(PPh3)4]-Catalyzed Diastereoselective Synthesis oftrans-1,2-Diazetidines from 2,3-Allenyl Hydrazines and Aryl Halides. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800364] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Cheng X, Ma S. [Pd(PPh3)4]-Catalyzed Diastereoselective Synthesis oftrans-1,2-Diazetidines from 2,3-Allenyl Hydrazines and Aryl Halides. Angew Chem Int Ed Engl 2008; 47:4581-3. [DOI: 10.1002/anie.200800364] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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30
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Kimura M, Horino Y, Mori M, Tamaru Y. Chameleon Reactivity of the Allene Bond of 4-Vinylidene-2-oxazolidinone: Novel Through-Space Conjugative Nucleophilic Addition of Electron-Rich Alkenes and Hetero-Nucleophiles. Chemistry 2007; 13:9686-702. [PMID: 17768719 DOI: 10.1002/chem.200700691] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Calpha==Cbeta double bond of allene carbamates 1 serves as an electron acceptor similar to the double bond of conjugated enones by means of a through-space interaction with the N--SO2 bond; the carbamate double bond is thus subject to nucleophilic addition for a wide variety of nucleophiles, which proceeds under mild conditions by heating at 70-100 degrees C. Depending on the kind of nucleophiles, 1 displays three different reaction modes: 1) Typically enol ethers and allylsilanes promote 1,3-sulfonyl migration of 1 and undergo the inverse electron demand Diels-Alder reaction with the 1-aza-1,3-butadiene intermediates II thus formed to furnish bicyclic 2-alkoxy-5-sulfonyltetrahydropyridines 2 and 2-silylmethyl-5-sulfonyltetrahydropyridines 3, respectively, with high regio- and stereoselectivity and retention of configuration of the double bonds of these electron-rich alkenes; 2) silanes (RnSiH4-n, n=1-3) and thiols deliver the hydride and the thiolate at the Cbeta carbon and promote the 1,3-sulfonyl migration, followed by protonation of the thus-formed carbamate anion (Z)-III to provide, for example, (Z)-4 a and (Z)-4 j, respectively; 3) alcohols simply add to the Calpha==Cbeta double bond and provide (E)-6. Usually, the reaction with alcohols is accompanied by the second pathway, giving rise to, for example, (Z)-4 b in addition to (E)-6 b. Phenol engages in the third pathway and provides (E)-6 g exclusively. Heteroaromatics, such as furans and benzofurans follow the first pathway, however, in a different regioselectivity from enol ethers and allylsilanes, delivering the oxygen atom at the 3-position of 5-sulfonyltetrahydropyridines (2 g and 2 h). Indoles, on the other hand, show a dichotomy, equally enjoying the first and the third pathways and provide mixtures of (E)-7 and (E)-8, respectively.
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Affiliation(s)
- Masanari Kimura
- Graduate School of Science and Technology, Department of Applied Chemistry, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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31
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Yu F, Lian X, Ma S. Pd-catalyzed regio- and stereoselective cyclization-heck reaction of monoesters of 1,2-allenyl phosphonic acids with alkenes. Org Lett 2007; 9:1703-6. [PMID: 17394348 DOI: 10.1021/ol0703478] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] The cyclization-Heck reactions of monoesters of 1, 2-allenyl phosphonic acids with alkenes were studied. The reaction afforded 4-(1-Z-alkenyl)-2-ethoxy-2,5-dihydro[1,2]oxaphosphole 2-oxides regio- and stereoselectively. Pd(II) was regenerated from the in situ formed Pd(0) using CaH2(cat.)/NaI/O2 or benzoquinone to furnish the catalytic cycle.
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Affiliation(s)
- Fei Yu
- 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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32
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O'Donnell MJ, Keeton JD, Khau VV, Bollinger JC. The regioselective α-alkylation of the benzophenone imine of glycinamide, alaninamide, and related derivatives. CAN J CHEM 2006. [DOI: 10.1139/v06-088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The benzophenone imine of glycinamide was alkylated using ion pair extraction (RX, 10% aq. NaOH, Bu4NHSO4 (1 equiv.), CH2Cl2, rt) to give the α-monosubstituted products, which were then alkylated a second time using stronger basic conditions (KO-t-Bu, THF, 0 °C, RX). Crystal structures of the Schiff bases of glycinamide, an α-monosubstituted and an α,α-disubstituted product were reported.Key words: benzophenone imines, Schiff bases, alkylation, ion pair extraction (IPE), phase-transfer catalysis (PTC), anhydrous base, X-ray crystal structures.
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33
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Ma S, Yu F, Li J, Gao W. Studies on Pd0-Catalyzed Cyclization ofN-3,4-Alkadienyl Toluenesulfonamides with Organic Halides: Selective Synthesis of 2,3-Dihydropyrroles, 1,2,3,6-Tetrahydropyrridines, and Azetidines. Chemistry 2006; 13:247-54. [PMID: 17004288 DOI: 10.1002/chem.200600431] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The palladium-catalyzed coupling-cyclization of beta-amino allenes with organic halides ranging from aryl halide to 1-alkenyl halide was studied. 2,3-Dihydro-1H-pyrroles were obtained by reaction of 3-substituted-5-unsubstituted-3,4-allenyl amides under conditions A, while the reaction of 5-substituted-3,4-allenyl amides afforded 1,2,5,6-tetrahydropyridines and/or azetidines with high de under conditions B or C. The skeleton and relative configuration of the six-membered products were established by the X-ray diffraction studies of 10 ka. Allenyl amide 4 q reacted with 1,4-diiodobenzene 6 r to afford double cyclization product 15. The structure of its major stereoisomer was also determined by the X-ray diffraction study.
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Affiliation(s)
- Shengming Ma
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China.
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34
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Wang C, Tunge JA. Decarboxylative Ring Contractions and Olefin Insertions of Vinyl Oxazinanones. Org Lett 2006; 8:3211-4. [PMID: 16836368 DOI: 10.1021/ol0610744] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[Structure: see text] 6-Vinyl oxazinanones undergo catalytic, diastereoselective, decarboxylative ring contraction to form vinyl azetidines in good yield. Performing the decarboxylation in the presence of Michael acceptors results in decarboxylative olefin insertion to provide diastereoenriched substituted vinyl piperidines.
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Affiliation(s)
- Chao Wang
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, USA
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35
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36
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Ma S, Gu Z, Deng Y. From allene to allene: a palladium-catalyzed approach to β-allenyl butenolides and their application to the synthesis of polysubstituted benzene derivatives. Chem Commun (Camb) 2006:94-6. [PMID: 16353104 DOI: 10.1039/b513371h] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An allene to allene protocol for the synthesis of beta-allenyl butenolides in moderate to high yields from 2,3-allenoic acids and propargylic carbonates catalyzed by Pd(OAc)2-TFP has been developed; the products were applied successfully to the Diels-Alder reaction with electron-deficient alkynes to afford polysubstituted benzene derivatives with an excellent regioselectivity.
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Affiliation(s)
- Shengming Ma
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, PR China.
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37
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Ohno H. Development of Useful Reactions Based on the Novel Reactivities of Allenic Compounds and Their Application to Tandem Cyclizations. YAKUGAKU ZASSHI 2005; 125:899-925. [PMID: 16327237 DOI: 10.1248/yakushi.125.899] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This review highlights a recent study on allenic compounds by the author's group. In the first section, the organocopper-mediated ring-opening reaction of ethynylaziridines and palladium-catalyzed reductive synthesis of allenes are described. In the second section, palladium-catalyzed stereoselective cyclization of allenes, including the tandem reaction, leading to aziridines, pyrrolidines, benzoisoindoles, and cyclopropanes is presented. The final section reviews aziridination and medium-ring formation due to the intramolecular reaction of bromoallenes. The latter reaction is based on the author's recent discovery that bromoallenes can act as allylic dication equivalents in the presence of a palladium catalyst and alcohol.
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Affiliation(s)
- Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita 565-0871, Japan.
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38
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Ohno H. Development of Useful Reactions Involving Tandem Cyclizations Based on the Novel Reactivities of Allenic Compounds. Chem Pharm Bull (Tokyo) 2005; 53:1211-26. [PMID: 16204973 DOI: 10.1248/cpb.53.1211] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This review highlights author's recent study on allenic compounds. In the first section, organocopper-mediated ring-opening reaction of ethynylaziridines and palladium-catalyzed reductive synthesis of allenes including those which are not accessible by other means, are described. In the second section, palladium-catalyzed stereoselective cyclization of allenes and tandem reaction leading to aziridines, pyrrolidines, benzoisoindoles, and cyclopropanes are presented. The final section presents aziridination and medium-ring formation by intramolecular reaction of bromoallenes, which are scarcely investigated until quite recently. The latter reaction is based on our recent discovery that bromoallenes can act as allylic dication equivalents in the presence of a palladium catalyst and alcohol.
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Affiliation(s)
- Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Osaka University, Japan.
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39
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Couty F, Durrat F, Evano G, Prim D. Synthesis and reactivity of enantiomerically pure N-alkyl-2-alkenyl azetidinium salts. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.07.113] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Ma S, Yu F, Gao W. Studies on Pd(II)-catalyzed coupling-cyclization of alpha- or beta-amino allenes with allylic halides. J Org Chem 2003; 68:5943-9. [PMID: 12868930 DOI: 10.1021/jo0342469] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The palladium-catalyzed coupling-cyclization of alpha- or beta-amino allenes with allylic halides leading to 3-allylic 2,5-dihydropyrroles and 1,2,3,6-tetrahydropyridines, respectively, was studied. The starting materials are easily available. The skeletons of both two classes of products were established by the X-ray diffraction studies of 7i and 9b. Through the study of the reaction of 2b with 3-chloro-1-butene, 1-chloro-2-butene, and pi-allyl palladium species and the stereochemical outcome of the coupling cyclization of (S)-2m and (R)-2n, it is believed that the current transformation most likely proceeded via a Pd(II)-catalyzed pathway, although a Pd(0) pathway cannot be completely excluded.
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Affiliation(s)
- Shengming Ma
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P. R. China.
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41
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Ma S, Gao W. Tuning the reaction paths in palladium(0)-catalyzed coupling-cyclization reaction of beta-amino allenes with organic halides: a substituent switch. Org Lett 2002; 4:2989-92. [PMID: 12182606 DOI: 10.1021/ol026406t] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Substituent effects on the allene moiety and the N-protecting group were found to be the dominant factor in determining the reaction paths in the Pd(0)-catalyzed coupling-cyclization reaction of beta-amino allenes with organic halides.
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Affiliation(s)
- Shengming Ma
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P. R. China.
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42
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Kang SK, Ha YH, Yang HY. Palladium(0)-Catalysed Cyclisation of Functionalised Allenyl Ethers with Hypervalent Iodonium Salts. JOURNAL OF CHEMICAL RESEARCH 2002. [DOI: 10.3184/030823402103171988] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The palladium(0)-catalysed coupling and cyclisation of allenyl alcohols and allenyl amines with hypervalent iodonium salts afforded cyclised heterocyclic acetals and morpholines under mild conditions.
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Affiliation(s)
- Suk-Ku Kang
- Department of Chemistry and Lab for Metal-Catalyzed Reactions, Sungkyunkwan University, Suwon 440-746, Korea
| | - Young-Hwan Ha
- Department of Chemistry and Lab for Metal-Catalyzed Reactions, Sungkyunkwan University, Suwon 440-746, Korea
| | - Han-Yong Yang
- Department of Chemistry and Lab for Metal-Catalyzed Reactions, Sungkyunkwan University, Suwon 440-746, Korea
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43
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Ma S, Yu Z. Oxidative Cyclization-Dimerization Reaction of 2,3-Allenoic Acids and 1,2-Allenyl Ketones: An Efficient Synthesis of 4-(3′-Furanyl)butenolide Derivatives. Angew Chem Int Ed Engl 2002; 41:1775-8. [DOI: 10.1002/1521-3773(20020517)41:10<1775::aid-anie1775>3.0.co;2-8] [Citation(s) in RCA: 128] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Ma S, Yu Z. Oxidative Cyclization-Dimerization Reaction of 2,3-Allenoic Acids and 1,2-Allenyl Ketones: An Efficient Synthesis of 4-(3′-Furanyl)butenolide Derivatives. Angew Chem Int Ed Engl 2002. [DOI: 10.1002/1521-3757(20020517)114:10<1853::aid-ange1853>3.0.co;2-k] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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Shibata T, Shibata T, Kadowaki S, Takagi K. Palladium-catalyzed Synthesis of 2,2-Dimethyl-3-pyrrolines from a-Aminoallene and Aryl Iodides. HETEROCYCLES 2002. [DOI: 10.3987/com-02-9594] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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46
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Ohno H. [Development of aziridination and azetizination reactions of amino allenes using a palladium catalyst]. YAKUGAKU ZASSHI 2001; 121:733-41. [PMID: 11676175 DOI: 10.1248/yakushi.121.733] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Palladium-catalyzed synthesis of alkenylaziridines and azetidines from alpha- and beta-amino allenes are presented. Whereas palladium-catalyzed reaction of N-arylsulfonyl-alpha-amino allenes with an aryl iodide in the presence of potassium carbonate in DMF at around 70 degrees C affords the corresponding 3-pyrroline derivatives, the reaction in refluxing 1,4-dioxane under similar conditions yields exclusively or most predominantly the corresponding 2-alkenylaziridines bearing an aryl group on the double bond. Similarly, N-arylsulfonyl-beta-amino allenes can be also cyclized into the corresponding alkenylazetidines bearing 2,4-cis-sunstituents under palladium-catalyzed cyclization conditions in DMF.
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Affiliation(s)
- H Ohno
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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47
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Ohno H, Anzai M, Toda A, Ohishi S, Fujii N, Tanaka T, Takemoto Y, Ibuka T. Stereoselective synthesis of 2-alkenylaziridines and 2-alkenylazetidines by palladium-catalyzed intramolecular amination of alpha- and beta-amino allenes. J Org Chem 2001; 66:4904-14. [PMID: 11442424 DOI: 10.1021/jo015683v] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Whereas palladium-catalyzed reaction of N-arylsulfonyl-alpha-amino allenes with an aryl iodide (4 equiv) in the presence of potassium carbonate (4 equiv) in DMF at around 70 degrees C affords the corresponding 3-pyrroline derivatives, the reaction in refluxing 1,4-dioxane under otherwise identical conditions yields exclusively or most predominantly the corresponding 2-alkenylaziridines bearing an aryl group on the double bond. Similarly, N-arylsulfonyl-beta-amino allenes can be also cyclized into the corresponding alkenylazetidines bearing a 2,4-cis-configuration under palladium-catalyzed cyclization conditions in DMF.
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Affiliation(s)
- H Ohno
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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48
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O'Donnell MJ, Delgado F. Enantiomeric enrichment of α-amino acid derivatives: recrystallization of N-Fmoc α-amino acid tert-butyl esters. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00554-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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49
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Karstens WF, Klomp D, Rutjes FP, Hiemstra H. N -Acyliminium ion chemistry and palladium catalysis: a useful combination to obtain bicyclic heterocycles. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00364-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Karstens WF, Stol M, Rutjes FP, Kooijman H, Spek AL, Hiemstra H. Palladium catalyzed cyclization reactions of acetylenic lactams. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(00)00935-9] [Citation(s) in RCA: 19] [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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