1
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Dutta S, Sahoo AK. Three Component syn-1,2-Arylmethylation of Internal Alkynes. Angew Chem Int Ed Engl 2023; 62:e202300610. [PMID: 36701082 DOI: 10.1002/anie.202300610] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 01/26/2023] [Accepted: 01/26/2023] [Indexed: 01/27/2023]
Abstract
A Pd-catalyzed three-component syn-1,2-arylmethylation of internal alkynes (ynamides/yne-acetates/alkynes) is described. The readily available and bench stable coupling partners iodo-arenes, and methyl boronic acid are successfully used in this coupling strategy to access the methyl-containing tetra-substituted olefins; the scope is broad showing excellent functional-group tolerance. Notably, the transformation is regio- as well as stereoselective. The biologically relevant motifs (BRM) bearing iodo-arenes and ynamides are also used for the late-stage syn-1,2-arylmethylation of alkynes. Aryl-alkylation, aryl-trideuteriomethylation, alkynyl-methylation, and alkenyl-methylation of ynamides are also presented. The Me-substituted alkenes are further transformed into synthetically important β-amino-indenones and α-fluoro-α'-methyl ketones.
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Affiliation(s)
- Shubham Dutta
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
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2
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Zhu BH, Ye SB, Nie ML, Xie ZY, Wang YB, Qian PC, Sun Q, Ye LW, Li L. I 2 -Catalyzed Cycloisomerization of Ynamides: Chemoselective and Divergent Access to Indole Derivatives. Angew Chem Int Ed Engl 2023; 62:e202215616. [PMID: 36573021 DOI: 10.1002/anie.202215616] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Indexed: 12/28/2022]
Abstract
Herein, an I2 -catalyzed unprecedented cycloisomerization of ynamides is developed, furnishing various functionalized bis(indole) derivatives in generally good to excellent yields with wide substrate scope and excellent atom-economy. This protocol not only represents the first molecular-iodine-catalyzed tandem complex alkyne cycloisomerizations, but also constitutes the first chemoselective cycloisomerization of tryptamine-ynamides involving distinctively different C(sp3 )-C(sp3 ) bond cleavage and rearrangement. Moreover, chiral tetrahydropyridine frameworks containing two stereocenters are obtained with moderate to excellent diastereoselectivities and excellent enantioselectivities. Meanwhile, cycloisomerization and aromatization of ynamides produce pyrrolyl indoles with high efficiency enabled by I2 . Additionally, control experiments and theoretical calculations reveal that this reaction probably undergoes a tandem 5-exo-dig cyclization/rearrangement process.
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Affiliation(s)
- Bo-Han Zhu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Sheng-Bing Ye
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Min-Ling Nie
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Zhong-Yang Xie
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Yi-Bo Wang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Peng-Cheng Qian
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Long Li
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou, 325000, China.,State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
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3
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Sau S, Ghosh A, Shankar M, Gogoi MP, Sahoo AK. Cobalt-Catalyzed Thioamide Directed C(arene)-H Annulation with Ynamide: Regioselective Access to 2-Amidoindenones. Org Lett 2022; 24:9508-9513. [PMID: 36538762 DOI: 10.1021/acs.orglett.2c03989] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Demonstrated herein is an unprecedented thioamide-directed cobalt (Co)-catalyzed umpolung annulation of sulfoximines enabled aryl thioamide with ynamide for the synthesis of highly substituted 2-amidoindenones. The cyclization is regioselective, making β-C-C and α-C-CO bonds. The transformation is even successful on a gram scale, exhibiting broad scope with labile functional group tolerance and constructing 43 unusual 2-amidoindenones of structural diversity. Control experiments and mechanistic investigation validate the regioselectivity outcome in this transformation.
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Affiliation(s)
- Somratan Sau
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Arghadip Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Majji Shankar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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4
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Hansjacob P, Leroux FR, Gandon V, Donnard M. Palladium-Catalyzed Silylcyanation of Ynamides: Regio- and Stereoselective Access to Tetrasubstituted 3-Silyl-2-Aminoacrylonitriles. Angew Chem Int Ed Engl 2022; 61:e202200204. [PMID: 35060272 DOI: 10.1002/anie.202200204] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Indexed: 01/02/2023]
Abstract
The palladium-catalyzed silylcyanation of ynamides is described. This reaction is fully regioselective, delivering tetrasubstituted 2-aminoacrylonitriles derivatives exclusively. Unexpectedly, the nature (aryl or alkyl) of the substituent located at the β-position of the ynamide directly controls the stereoselectivity. The reaction tolerates a number of functional groups and can be considered as the first general access to fully substituted 2-aminoacrylonitriles. Given the singular reactivity observed, a computational study was performed to shed light on the mechanism of this intriguing transformation. Relying on the specific reactivity of the newly installed vinylsilane functionality, the scope of 2-aminoacrylonitriles has been enlarged by postfunctionalization.
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Affiliation(s)
- Pierre Hansjacob
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
| | - Frédéric R Leroux
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405, Orsay cedex, France.,Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, route de Saclay, 91128, Palaiseau cedex, France
| | - Morgan Donnard
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
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5
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Hansjacob P, Leroux FR, Gandon V, Donnard M. Palladium‐Catalyzed Silylcyanation of Ynamides: Regio‐ and Stereoselective Access to Tetrasubstituted 3‐Silyl‐2‐Aminoacrylonitriles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200204] [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)
- Pierre Hansjacob
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042) Université de Strasbourg Université de Haute-Alsace CNRS 67000 Strasbourg France
| | - Frédéric R. Leroux
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042) Université de Strasbourg Université de Haute-Alsace CNRS 67000 Strasbourg France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM) CNRS UMR 9168 Ecole Polytechnique Institut Polytechnique de Paris route de Saclay 91128 Palaiseau cedex France
| | - Morgan Donnard
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042) Université de Strasbourg Université de Haute-Alsace CNRS 67000 Strasbourg France
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6
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Sander S, Müller R, Ahrens M, Kaupp M, Braun T. Platinum Indolylphosphine Fluorido and Polyfluorido Complexes: An Interplay between Cyclometallation, Fluoride Migration, and Hydrogen Bonding. Chemistry 2021; 27:14287-14298. [PMID: 34337795 PMCID: PMC8596594 DOI: 10.1002/chem.202102451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Indexed: 11/06/2022]
Abstract
The reaction of [PtCl2 (COD)] (COD=1,5-cyclooctadiene) with diisopropyl-2-(3-methyl)indolylphosphine (iPr2 P(C9 H8 N)) led to the formation of the platinum(ii) chlorido complexes, cis-[PtCl2 {iPr2 P(C9 H8 N)}2 ] (1) and trans-[PtCl2 {iPr2 P(C9 H8 N)}2 ] (2). The cis-complex 1 reacted with NEt3 yielding the complex cis-[PtCl{κ2 -(P,N)-iPr2 P(C9 H7 N)}{iPr2 P(C9 H8 N)}] (3) bearing a cyclometalated κ2 -(P,N)-phosphine ligand, while the isomer 2 with a trans-configuration did not show any reactivity towards NEt3 . Treatment of 1 or 3 with (CH3 )4 NF (TMAF) resulted in the formation of the twofold cyclometalated complex cis-[Pt{κ2 -(P,N)-iPr2 P(C9 H7 N)}2 ] (4). The molecular structures of the complexes 1-4 were determined by single-crystal X-ray diffraction. The fluorido complex cis-[PtF{κ2 -(P,N)-iPr2 P(C9 H7 N)}{iPr2 P(C9 H8 N)}] ⋅ (HF)4 (5 ⋅ (HF)4 ) was formed when complex 4 was treated with different hydrogen fluoride sources. The Pt(ii) fluorido complex 5 ⋅ (HF)4 exhibits intramolecular hydrogen bonding in its outer coordination sphere between the fluorido ligand and the NH group of the 3-methylindolyl moiety. In contrast to its chlorido analogue 3, complex 5 ⋅ (HF)4 reacted with CO or the ynamide 1-(2-phenylethynyl)-2-pyrrolidinone to yield the complexes trans-[Pt(CO){κ2 -(P,C)-iPr2 P(C9 H7 NCO)}{iPr2 P(C9 H8 N)}][F(HF)4 ] (7) and a complex, which we suggest to be cis-[Pt{C=C(Ph)OCN(C3 H6 )}{κ2 -(P,N)-iPr2 P(C9 H7 N)}{iPr2 P(C9 H8 N)}][F(HF)4 ] (9), respectively. The structure of 9 was assigned on the basis of DFT calculations as well as NMR and IR data. Hydrogen bonding of HF and NH to fluoride was proven to be crucial for the existence of 7 and 9.
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Affiliation(s)
- Stefan Sander
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Str. 212489BerlinGermany
| | - Robert Müller
- Institut für ChemieTechnische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr.C7Straße des 17. Juni 13510623BerlinGermany
| | - Mike Ahrens
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Str. 212489BerlinGermany
| | - Martin Kaupp
- Institut für ChemieTechnische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr.C7Straße des 17. Juni 13510623BerlinGermany
| | - Thomas Braun
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Str. 212489BerlinGermany
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7
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You C, Sakai M, Daniliuc CG, Bergander K, Yamaguchi S, Studer A. Regio‐ and Stereoselective 1,2‐Carboboration of Ynamides with Aryldichloroboranes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107647] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Cai You
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Mika Sakai
- Department of Chemistry Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Klaus Bergander
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
| | - Shigehiro Yamaguchi
- Department of Chemistry Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
- Institute of Transformative Bio-Molecules (ITbM) Nagoya University Furo, Chikusa Nagoya 464-8601 Japan
| | - Armido Studer
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Corrensstrasse 40 48149 Münster Germany
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8
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You C, Sakai M, Daniliuc CG, Bergander K, Yamaguchi S, Studer A. Regio- and Stereoselective 1,2-Carboboration of Ynamides with Aryldichloroboranes. Angew Chem Int Ed Engl 2021; 60:21697-21701. [PMID: 34310824 PMCID: PMC8518048 DOI: 10.1002/anie.202107647] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/23/2021] [Indexed: 12/17/2022]
Abstract
Catalyst‐free 1,2‐carboboration of ynamides is presented. Readily available aryldichloroboranes react with alkyl‐ or aryl‐substituted ynamides in high yields with complete regio‐ and stereoselectivity to valuable β‐boryl‐β‐alkyl/aryl α‐aryl substituted enamides which belong to the class of trisubstituted alkenylboronates. The 1,2‐carboboration reaction is experimentally easy to conduct, shows high functional group tolerance and broad substrate scope. Gram‐scale reactions and diverse synthetic transformations convincingly demonstrate the synthetic potential of this method. The reaction can also be used to access 1‐boraphenalenes, a class of boron‐doped polycyclic aromatic hydrocarbons.
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Affiliation(s)
- Cai You
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
| | - Mika Sakai
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
| | - Klaus Bergander
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan.,Institute of Transformative Bio-Molecules (ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8601, Japan
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149, Münster, Germany
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9
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Takai R, Shimbo D, Tada N, Itoh A. Ligand-Enabled Copper-Catalyzed N-Alkynylation of Sulfonamide with Alkynyl Benziodoxolone: Synthesis of Amino Acid-Derived Ynamide. J Org Chem 2021; 86:4699-4713. [PMID: 33719425 DOI: 10.1021/acs.joc.1c00101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ynamides are versatile building blocks in organic synthesis. However, the synthesis of amino acid-derived ynamides is difficult but in high demand. Herein, we disclose the copper-catalyzed Csp-N coupling of sulfonamide, including amino acid and peptide derivatives, to give ynamides by using alkynyl benziodoxolones with broad functional group tolerance under mild reaction conditions. The electron-rich bipyridine as a ligand and ethanol as solvent were used for the success of this reaction. The usefulness of the obtained amino acid-derived ynamide as building block was showcased by further derivatization to unique amino acid derivatives. A control experiment to elucidate the mechanistic insight was also described.
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Affiliation(s)
- Ryogo Takai
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Daisuke Shimbo
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Norihiro Tada
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Akichika Itoh
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
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