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Brutiu BR, Iannelli G, Riomet M, Kaiser D, Maulide N. Stereodivergent 1,3-difunctionalization of alkenes by charge relocation. Nature 2024; 626:92-97. [PMID: 38297174 PMCID: PMC10830407 DOI: 10.1038/s41586-023-06938-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 12/05/2023] [Indexed: 02/02/2024]
Abstract
Alkenes are indispensable feedstocks in chemistry. Functionalization at both carbons of the alkene-1,2-difunctionalization-is part of chemistry curricula worldwide1. Although difunctionalization at distal positions has been reported2-4, it typically relies on designer substrates featuring directing groups and/or stabilizing features, all of which determine the ultimate site of bond formation5-7. Here we introduce a method for the direct 1,3-difunctionalization of alkenes, based on a concept termed 'charge relocation', which enables stereodivergent access to 1,3-difunctionalized products of either syn- or anti-configuration from unactivated alkenes, without the need for directing groups or stabilizing features. The usefulness of the approach is demonstrated in the synthesis of the pulmonary toxin 4-ipomeanol and its derivatives.
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Affiliation(s)
- Bogdan R Brutiu
- Institute of Organic Chemistry, University of Vienna, Vienna, Austria
| | - Giulia Iannelli
- Institute of Organic Chemistry, University of Vienna, Vienna, Austria
| | - Margaux Riomet
- Institute of Organic Chemistry, University of Vienna, Vienna, Austria
| | - Daniel Kaiser
- Institute of Organic Chemistry, University of Vienna, Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Vienna, Austria.
- Research Platform NeGeMac, Vienna, Austria.
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2
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Tiefenbrunner I, Brutiu BR, Stopka T, Maulide N. Isothiouronium-Mediated Conversion of Carboxylic Acids to Cyanomethyl Thioesters. J Org Chem 2023; 88:3941-3944. [PMID: 36853206 PMCID: PMC10028607 DOI: 10.1021/acs.joc.2c02902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
We report the development of an isothiouronium salt as a reagent for the operationally simple synthesis of cyanomethyl thioesters with high functional group tolerance and avoiding the use of thiols. Additionally, we show that the products can be engaged in amide synthesis in either a two-step or one-pot fashion.
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Affiliation(s)
| | - Bogdan R Brutiu
- Institute of Organic Chemistry, University of Vienna, 1090 Vienna Austria
| | - Tobias Stopka
- Institute of Organic Chemistry, University of Vienna, 1090 Vienna Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, 1090 Vienna Austria
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Merad J, Matyašovský J, Stopka T, Brutiu BR, Pinto A, Drescher M, Maulide N. Stable and easily available sulfide surrogates allow a stereoselective activation of alcohols. Chem Sci 2021; 12:7770-7774. [PMID: 34168830 PMCID: PMC8188487 DOI: 10.1039/d1sc01602d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Isothiouronium salts are easily accessible and stable compounds. Herein, we report their use as versatile deoxasulfenylating agents enabling a stereoselective, thiol-free protocol for synthesis of thioethers from alcohols. The method is simple, scalable and tolerates a broad range of functional groups otherwise incompatible with other methods. Late-stage modification of several pharmaceuticals provides access to multiple analogues of biologically relevant molecules. Performed experiments give insight into the reaction mechanism. A simple and scalable method for stereoselective synthesis of thioethers directly from alcohols using isothiouronium salts is presented. The utility of this thiol-free reaction was exemplified by late-stage modification of complex molecules.![]()
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Affiliation(s)
- Jérémy Merad
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at.,Univ. Lyon, Université Claude Bernard Lyon 1, CNRS CPE Lyon, INSA Lyon, ICBMS, UMR 5246 Bât. Lederer 1 rue Victor Grignard 69622 Villeurbanne France
| | - Ján Matyašovský
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Tobias Stopka
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Bogdan R Brutiu
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Alexandre Pinto
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Martina Drescher
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Nuno Maulide
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
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4
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Abstract
A method for the Brønsted acid promoted desulfination of aryl sulfoxides is presented. In the presence of a thiol, electron-rich sulfoxides undergo C–S bond cleavage to give the corresponding protodesulfinated arenes and disulfides.
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Lemmerer M, Abraham M, Brutiu BR, Roller A, Widhalm M. Synthesis, Structure, and Reactivity of Binaphthyl Supported Dihydro[1,6]diazecines. Molecules 2019; 24:E3098. [PMID: 31455006 PMCID: PMC6749229 DOI: 10.3390/molecules24173098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/23/2019] [Accepted: 08/25/2019] [Indexed: 11/16/2022] Open
Abstract
A short approach to chiral diaza-olefines from protected 2,2'-diamino-1,1'-binaphthyl is presented. Cis- and trans-olefines can be selectively obtained by twofold N-allylation followed by RCM or by bridging a 2,2'-diamino-1,1'-binaphthyl precursor with trans-1,4-dibromo-2-butene. Deprotection afforded cis- and trans-dihydro[1,6]diazecines 1 in 58 and 64% overall yield. The reactivity of the but-2-ene-1,4-diyl fragment was investigated yielding corresponding epoxides, diols, and mono- and dibromo products. In several cases rearrangements and participation of the proximate N-Boc group was observed. In no case could allylic substitution be accomplished. From 13 compounds X-ray structure analyses could be obtained.
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Affiliation(s)
- Miran Lemmerer
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, 1090 Wien, Austria
| | - Michael Abraham
- Institute of Chemical Catalysis, University of Vienna, Währinger Straße 38, 1090 Wien, Austria
| | - Bogdan R Brutiu
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, 1090 Wien, Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry, University of Vienna, Währinger Straße 42, 1090 Wien, Austria
| | - Michael Widhalm
- Institute of Chemical Catalysis, University of Vienna, Währinger Straße 38, 1090 Wien, Austria.
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Brutiu BR, Bubeneck WA, Cvetkovic O, Li J, Maulide N. On the formation of seven-membered rings by arene-ynamide cyclization. Monatsh Chem 2018; 150:3-10. [PMID: 30662090 PMCID: PMC6320749 DOI: 10.1007/s00706-018-2320-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 10/10/2018] [Indexed: 12/31/2022]
Abstract
ABSTRACT A Brønsted acid-catalyzed selective arene-ynamide cyclization is described. This reaction proceeds via a keteniminium intermediate and enables the preparation of seven-membered ring enamide products. Mechanistic studies uncover an unusual product inhibition behavior. GRAPHICAL ABSTRACT
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Affiliation(s)
- Bogdan R. Brutiu
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Wilhelm Andrei Bubeneck
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Olivera Cvetkovic
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Jing Li
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
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Adler P, Pons A, Li J, Heider J, Brutiu BR, Maulide N. Chemoselective Activation of Diethyl Phosphonates: Modular Synthesis of Biologically Relevant Phosphonylated Scaffolds. Angew Chem Int Ed Engl 2018; 57:13330-13334. [PMID: 30067301 PMCID: PMC6175129 DOI: 10.1002/anie.201806343] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/14/2018] [Indexed: 01/13/2023]
Abstract
Phosphonates have garnered considerable attention for years owing to both their singular biological properties and their synthetic potential. State-of-the-art methods for the preparation of mixed phosphonates, phosphonamidates, phosphonothioates, and phosphinates rely on harsh and poorly selective reaction conditions. We report herein a mild method for the modular preparation of phosphonylated derivatives, several of which exhibit interesting biological activities, that is based on chemoselective activation with triflic anhydride. This procedure enables flexible and even iterative substitution with a broad range of O, S, N, and C nucleophiles.
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Affiliation(s)
- Pauline Adler
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Amandine Pons
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Jing Li
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Jörg Heider
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Bogdan R Brutiu
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
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Adler P, Pons A, Li J, Heider J, Brutiu BR, Maulide N. Chemoselektive Aktivierung von Diethylphosphonaten: modulare Synthese von biologisch relevanten phosphonylierten Grundgerüsten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Pauline Adler
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Amandine Pons
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Jing Li
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Jörg Heider
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Bogdan R. Brutiu
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
| | - Nuno Maulide
- Institut für Organische ChemieUniversität Wien Währinger Straße 38 1090 Wien Österreich
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