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Sabat N, Zhou W, Gandon V, Guinchard X, Vincent G. Unbiased C3-Electrophilic Indoles: Triflic Acid Mediated C3-Regioselective Hydroarylation of N-H Indoles. Angew Chem Int Ed Engl 2022; 61:e202204400. [PMID: 35570713 PMCID: PMC9401073 DOI: 10.1002/anie.202204400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Indexed: 11/24/2022]
Abstract
The direct dearomative addition of arenes to the C3 position of unprotected indoles is reported under operationally simple conditions, using triflic acid at room temperature. The present regioselective hydroarylation is a straightforward manner to generate an electrophilic indole at the C3 position from unbiased indoles in sharp contrast to previous strategies. This atom-economical method delivers biologically relevant 3-arylindolines and 3,3-spiroindolines in high yields and regioselectivities from both intra- and intermolecular processes. DFT computations suggest the stabilization of cationic or dicationic intermediates with H-bonded (TfOH)n clusters.
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Affiliation(s)
- Nazarii Sabat
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182Université Paris-Saclay, CNRS91405OrsayFrance
- Institut de Chimie des Substances Naturelles (ICSN), UPR 2301Université Paris-Saclay, CNRS91198Gif-sur-YvetteFrance
| | - Weiping Zhou
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182Université Paris-Saclay, CNRS91405OrsayFrance
- Institut de Chimie des Substances Naturelles (ICSN), UPR 2301Université Paris-Saclay, CNRS91198Gif-sur-YvetteFrance
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182Université Paris-Saclay, CNRS91405OrsayFrance
- Laboratoire de Chimie Moléculaire (LCM), UMR 9168Ecole PolytechniqueInstitut Polytechnique de Paris, CNRS91128PalaiseauFrance
| | - Xavier Guinchard
- Institut de Chimie des Substances Naturelles (ICSN), UPR 2301Université Paris-Saclay, CNRS91198Gif-sur-YvetteFrance
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182Université Paris-Saclay, CNRS91405OrsayFrance
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2
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Sabat N, Zhou W, Gandon V, Guinchard X, Vincent G. Unbiased C3‐Electrophilic Indoles: Triflic Acid Mediated C3‐Regioselective Hydroarylation of N−H Indoles**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204400] [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)
- Nazarii Sabat
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 Université Paris-Saclay, CNRS 91405 Orsay France
- Institut de Chimie des Substances Naturelles (ICSN), UPR 2301 Université Paris-Saclay, CNRS 91198 Gif-sur-Yvette France
| | - Weiping Zhou
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 Université Paris-Saclay, CNRS 91405 Orsay France
- Institut de Chimie des Substances Naturelles (ICSN), UPR 2301 Université Paris-Saclay, CNRS 91198 Gif-sur-Yvette France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 Université Paris-Saclay, CNRS 91405 Orsay France
- Laboratoire de Chimie Moléculaire (LCM), UMR 9168 Ecole Polytechnique Institut Polytechnique de Paris, CNRS 91128 Palaiseau France
| | - Xavier Guinchard
- Institut de Chimie des Substances Naturelles (ICSN), UPR 2301 Université Paris-Saclay, CNRS 91198 Gif-sur-Yvette France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 Université Paris-Saclay, CNRS 91405 Orsay France
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3
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Gutierrez DA, Fettinger J, Houk KN, Ando K, Shaw JT. Diastereoselective Addition of Prochiral Nucleophilic Alkenes to α-Chiral N-Sulfonyl Imines. Org Lett 2022; 24:1164-1168. [PMID: 35103474 DOI: 10.1021/acs.orglett.1c04219] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Lewis-acid-promoted addition of prochiral E- and Z-allyl nucleophiles to chiral α-alkoxy N-tosyl imines is described. Alkene geometry is selectively transferred to the newly formed carbon-carbon bond, resulting in stereochemical control of C1, C2, and C3 of the resulting 2-alkoxy-3-N-tosyl-4-alkyl-5-hexene products. A computational analysis to elucidate the high selectivity is also presented. This methodology was employed in the synthesis of two naturally occurring isomers of clausenamide.
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Affiliation(s)
- David A Gutierrez
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - James Fettinger
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Kaori Ando
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu 501-1193, Japan
| | - Jared T Shaw
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
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4
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Zhang J, Xia W, Qu M, Huda S, Ward JS, Rissanen K, Albrecht M. Synthesis of Polycyclic Indolines by Utilizing a Reduction/Cyclization Cascade Reaction. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jingyu Zhang
- Institut für Organische Chemie RWTH Aachen University Landoltweg 1 Aachen 52074 Germany
| | - Wei Xia
- Institut für Organische Chemie RWTH Aachen University Landoltweg 1 Aachen 52074 Germany
| | - Meilin Qu
- Institut für Organische Chemie RWTH Aachen University Landoltweg 1 Aachen 52074 Germany
| | - Saskia Huda
- Institut für Organische Chemie RWTH Aachen University Landoltweg 1 Aachen 52074 Germany
| | - Jas S. Ward
- University of Jyvaskyla Department of Chemistry P.O. Box 35 Jyväskylä Finland
| | - Kari Rissanen
- University of Jyvaskyla Department of Chemistry P.O. Box 35 Jyväskylä Finland
| | - Markus Albrecht
- Institut für Organische Chemie RWTH Aachen University Landoltweg 1 Aachen 52074 Germany
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5
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Gao B, Xu S, Du T, Li Y. Transition‐Metal‐Free Catalyzed Dearomatizative Esterification of Indole. ChemistrySelect 2020. [DOI: 10.1002/slct.201904715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bao Gao
- Key Laboratory of Agri-Food Safety of Anhui ProvinceAnhui Agricultural University Hefei 230036 China
| | - Shasha Xu
- Key Laboratory of Agri-Food Safety of Anhui ProvinceAnhui Agricultural University Hefei 230036 China
| | - Tianri Du
- Key Laboratory of Agri-Food Safety of Anhui ProvinceAnhui Agricultural University Hefei 230036 China
| | - Yahui Li
- Key Laboratory of Agri-Food Safety of Anhui ProvinceAnhui Agricultural University Hefei 230036 China
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6
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Ullrich P, Schmauck J, Brauns M, Mantel M, Breugst M, Pietruszka J. Enantioselective Allylation of Indoles: A Surprising Diastereoselectivity. J Org Chem 2020; 85:1894-1905. [PMID: 31905290 DOI: 10.1021/acs.joc.9b02573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Herein we show a novel approach toward the allylation of indoles. Thereby, we explore a class of bench-stable allylboronates and fine-tune their reactivity. The allylations of different substituted indoles proceed with negligible diastereo- and excellent enantioselectivities. This surprising selectivity (up to 99:1 er, up to ≈60:40 dr) is rationalized by DFT calculations.
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Affiliation(s)
- Patrick Ullrich
- Institut für Bioorganische Chemie (IBOC) , Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich , Stetternicher Forst, Geb. 15.8, 52426 Jülich , Germany
| | - Julie Schmauck
- Department für Chemie , Universität zu Köln , Greinstraße 4 , 50939 Köln , Germany
| | - Marcus Brauns
- Institut für Bioorganische Chemie (IBOC) , Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich , Stetternicher Forst, Geb. 15.8, 52426 Jülich , Germany
| | - Marvin Mantel
- Institut für Bioorganische Chemie (IBOC) , Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich , Stetternicher Forst, Geb. 15.8, 52426 Jülich , Germany
| | - Martin Breugst
- Department für Chemie , Universität zu Köln , Greinstraße 4 , 50939 Köln , Germany
| | - Jörg Pietruszka
- Institut für Bioorganische Chemie (IBOC) , Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich , Stetternicher Forst, Geb. 15.8, 52426 Jülich , Germany.,Institut für Bio- und Geowissenschaften (IBG-1: Bioorganische Chemie) , Forschungszentrum Jülich , 52428 Jülich , Germany
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7
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Saya JM, van Wordragen EDH, Orru RVA, Ruijter E. Mild and Practical Indole C2 Allylation by Allylboration of in situ Generated 3-Chloroindolenines. European J Org Chem 2019; 2019:5156-5160. [PMID: 31894179 PMCID: PMC6919337 DOI: 10.1002/ejoc.201801745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Indexed: 01/04/2023]
Abstract
C2 allylation of indole derivatives is a challenging but important transformation given the biological relevance of the products. Herein we report a selective C2 allylation strategy that proceeds via allylboration of in situ-generated 3-chloroindolenines. The reaction is mild, practical, and compatible with a wide range of C3-substituted indoles. As allylboronates are readily accessible from commercial precursors, various substituted allyl moieties can be introduced using the same protocol. To showcase the utility of this method we applied it to the synthesis of the natural product, tryprostatin B.
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Affiliation(s)
- Jordy M. Saya
- Department of Chemistry & Pharmaceutical SciencesAmsterdam Institute for MoleculesMedicines & SystemsVrije Universiteit AmsterdamDe Boelelaan 11081081 HZAmsterdamthe Netherlands
| | - Ellen D. H. van Wordragen
- Department of Chemistry & Pharmaceutical SciencesAmsterdam Institute for MoleculesMedicines & SystemsVrije Universiteit AmsterdamDe Boelelaan 11081081 HZAmsterdamthe Netherlands
| | - Romano V. A. Orru
- Department of Chemistry & Pharmaceutical SciencesAmsterdam Institute for MoleculesMedicines & SystemsVrije Universiteit AmsterdamDe Boelelaan 11081081 HZAmsterdamthe Netherlands
| | - Eelco Ruijter
- Department of Chemistry & Pharmaceutical SciencesAmsterdam Institute for MoleculesMedicines & SystemsVrije Universiteit AmsterdamDe Boelelaan 11081081 HZAmsterdamthe Netherlands
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8
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Ciccolini C, Mari M, Lucarini S, Mantellini F, Piersanti G, Favi G. Polycyclic Indolines by an Acid‐Mediated Intramolecular Dearomative Strategy: Reversing Indole Reactivity in the Pictet‐Spengler‐Type Reaction. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800981] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Cecilia Ciccolini
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural CompoundsUniversity of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino Italy
| | - Michele Mari
- Department of Biomolecular Sciences, Section of ChemistryUniversity of Urbino “Carlo Bo” Piazza Rinascimento 6 61029 Urbino Italy
| | - Simone Lucarini
- Department of Biomolecular Sciences, Section of ChemistryUniversity of Urbino “Carlo Bo” Piazza Rinascimento 6 61029 Urbino Italy
| | - Fabio Mantellini
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural CompoundsUniversity of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences, Section of ChemistryUniversity of Urbino “Carlo Bo” Piazza Rinascimento 6 61029 Urbino Italy
| | - Gianfranco Favi
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural CompoundsUniversity of Urbino “Carlo Bo” Via I Maggetti 24 61029 Urbino Italy
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9
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Alam R, Diner C, Jonker S, Eriksson L, Szabó KJ. Catalytic Asymmetric Allylboration of Indoles and Dihydroisoquinolines with Allylboronic Acids: Stereodivergent Synthesis of up to Three Contiguous Stereocenters. Angew Chem Int Ed Engl 2016; 55:14417-14421. [PMID: 27735124 PMCID: PMC5129484 DOI: 10.1002/anie.201608605] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Indexed: 12/17/2022]
Abstract
The catalytic asymmetric allylboration of cyclic imines with γ,γ‐disubstituted allylboronic acids provides products with adjacent stereocenters in high yield and stereoselectivity. Various electrophiles, including 3,4‐dihydroisoquinolines and indoles, were prenylated in a fully stereodivergent fashion by switching the E/Z geometry of the allylboronate and/or the enantiomer of the BINOL catalyst. 3‐Methylindole provided products with three adjacent stereocenters with high stereoselectivity in one synthetic operation.
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Affiliation(s)
- Rauful Alam
- Department of Organic Chemistry, Stockholm University, Sweden
| | - Colin Diner
- Department of Organic Chemistry, Stockholm University, Sweden
| | - Sybrand Jonker
- Department of Organic Chemistry, Stockholm University, Sweden
| | - Lars Eriksson
- Department of Materials and Environmental Chemistry, Stockholm University, Sweden
| | - Kálmán J Szabó
- Department of Organic Chemistry, Stockholm University, Sweden.
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10
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Alam R, Diner C, Jonker S, Eriksson L, Szabó KJ. Catalytic Asymmetric Allylboration of Indoles and Dihydroisoquinolines with Allylboronic Acids: Stereodivergent Synthesis of up to Three Contiguous Stereocenters. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608605] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rauful Alam
- Department of Organic Chemistry; Stockholm University; Sweden
| | - Colin Diner
- Department of Organic Chemistry; Stockholm University; Sweden
| | - Sybrand Jonker
- Department of Organic Chemistry; Stockholm University; Sweden
| | - Lars Eriksson
- Department of Materials and Environmental Chemistry; Stockholm University; Sweden
| | - Kálmán J. Szabó
- Department of Organic Chemistry; Stockholm University; Sweden
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11
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Chen JLY, Aggarwal VK. Highly Diastereoselective and Enantiospecific Allylation of Ketones and Imines Using Borinic Esters: Contiguous Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2014; 53:10992-6. [DOI: 10.1002/anie.201407127] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Indexed: 11/08/2022]
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12
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Chen JLY, Aggarwal VK. Highly Diastereoselective and Enantiospecific Allylation of Ketones and Imines Using Borinic Esters: Contiguous Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407127] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Wang JJ, Zhou AX, Wang GW, Yang SD. An Aluminum Triflate-Catalyzed Intramolecular Reaction Sequence Toward Concise Construction of the Tetrahydropyrido[1,2-a]indol-6-one Skeleton. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400391] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Beaud R, Guillot R, Kouklovsky C, Vincent G. Regioselective hydroarylation reactions of C3 electrophilic N-acetylindoles activated by FeCl3: an entry to 3-(hetero)arylindolines. Chemistry 2014; 20:7492-500. [PMID: 24828464 DOI: 10.1002/chem.201400284] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Indexed: 11/06/2022]
Abstract
A method for the direct and rare umpolung of the 3 position of indoles is reported. The activation of N-acetylindole with iron(III) chloride allows the C-H addition of aromatic and heteroaromatic substrates to the C2=C3 double bond of the indole nucleus to generate a quaternary center at C3 and leads regioselectively to 3-arylindolines. Optimization, scope (50 examples), practicability (gram scale, air atmosphere, room temperature), and mechanistic insights of this process are presented. Synthetic transformations of the indoline products into drug-like compounds are also described.
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Affiliation(s)
- Rodolphe Beaud
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques, Univ Paris Sud and CNRS, 15 rue Georges Clemenceau, Bat 410, 91406, Orsay (France), Fax: (+33) 1-69-15-46-79
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15
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Pan Z, Pound SM, Rondla NR, Douglas CJ. Intramolecular aminocyanation of alkenes by N-CN bond cleavage. Angew Chem Int Ed Engl 2014; 53:5170-4. [PMID: 24719371 PMCID: PMC4077192 DOI: 10.1002/anie.201310983] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/06/2014] [Indexed: 11/06/2022]
Abstract
A metal-free, Lewis acid promoted intramolecular aminocyanation of alkenes was developed. B(C6F5)3 activates N-sulfonyl cyanamides, thus leading to a formal cleavage of the N-CN bonds in conjunction with vicinal addition of sulfonamide and nitrile groups across an alkene. This method enables atom-economical access to indolines and tetrahydroquinolines in excellent yields, and provides a complementary strategy for regioselective alkene difunctionalizations with sulfonamide and nitrile groups. Labeling experiments with (13)C suggest a fully intramolecular cyclization pattern due to the lack of label scrambling in double crossover experiments. Catalysis with Lewis acid is realized and the reaction can be conducted under air.
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Affiliation(s)
- Zhongda Pan
- Department of Chemistry, University of Minnesota – Twin Cities, 207 Pleasant St. SE, Minneapolis, MN 55455 (USA)
| | - Sarah M. Pound
- Department of Chemistry, University of Minnesota – Twin Cities, 207 Pleasant St. SE, Minneapolis, MN 55455 (USA)
| | - Naveen R. Rondla
- Department of Chemistry, University of Minnesota – Twin Cities, 207 Pleasant St. SE, Minneapolis, MN 55455 (USA)
| | - Christopher J. Douglas
- Department of Chemistry, University of Minnesota – Twin Cities, 207 Pleasant St. SE, Minneapolis, MN 55455 (USA)
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Pan Z, Pound SM, Rondla NR, Douglas CJ. Intramolecular Aminocyanation of Alkenes by NCN Bond Cleavage. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310983] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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