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Chen J, Wang N, Qi C, Chang J, Wang XN. Brønsted acid catalyzed Ficini [2 + 2] cycloaddition of ynamides with enones. Org Biomol Chem 2024; 22:4264-4268. [PMID: 38742913 DOI: 10.1039/d4ob00470a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Herein, we describe a novel metal-free Brønsted acid-catalyzed Ficini [2 + 2] cycloaddition of ynamides with enones under mild reaction conditions, leading to the formation of various cyclobutenamides in generally good to excellent yields within short reaction times. This work represents the first example of ynamides involved in a nonmetal-catalyzed [2 + 2] cycloaddition with enones.
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Affiliation(s)
- Jinyue Chen
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Nanfang Wang
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Chaofan Qi
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Junbiao Chang
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Xiao-Na Wang
- Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, P. R. China.
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2
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Abstract
AbstractContinuous flow photochemistry as a field has witnessed an increasing popularity over the last decade in both academia and industry. Key drivers for this development are safety, practicality as well as the ability to rapidly access complex chemical structures. Continuous flow reactors, whether home-built or from commercial suppliers, additionally allow for creating valuable target compounds in a reproducible and automatable manner. Recent years have furthermore seen the advent of new energy efficient LED lamps that in combination with innovative reactor designs provide a powerful means to increasing both the practicality and productivity of modern photochemical flow reactors. In this review article we wish to highlight key achievements pertaining to the scalability of such continuous photochemical processes.
Graphical abstract
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3
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Synthesis, Doping and Characterization of new Molecular Semiconductors Containing (2E, 4Z)-5, 7-diphenylhepta-2, 4-dien-6-ynoic acids. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-019-01430-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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4
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Affiliation(s)
- Susannah C. Coote
- Department of Chemistry; Lancaster University; Bailrigg Lancaster LA1 4YB UK
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5
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Williams JD, Otake Y, Coussanes G, Saridakis I, Maulide N, Kappe CO. Towards a Scalable Synthesis of 2-Oxabicyclo[2.2.0]hex-5-en-3-one Using Flow Photochemistry. CHEMPHOTOCHEM 2019; 3:229-232. [PMID: 31423462 PMCID: PMC6686974 DOI: 10.1002/cptc.201900017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 01/31/2019] [Indexed: 12/12/2022]
Abstract
Cyclobutene lactones hold great potential as synthetic building blocks, yet their preparation by photochemical rearrangement in batch can often be a bottleneck in synthetic studies. We report the use of flow photochemistry as a tool to enable a higher-throughput approach to the synthesis of 2-oxabicyclo[2.2.0]hex-5-en-3-one, which reduces reaction times from 24 h to 10 min. Accordingly, a significantly improved throughput of 144 mg/h (vs 14-21 mg/h in batch) was achieved. Scale-out experiments showed problematic reactor fouling and steps were taken to explore and minimize this effect.
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Affiliation(s)
- Jason D. Williams
- Center for Continuous Flow Synthesis and Processing (CCFLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 138010GrazAustria
- Institute of ChemistryUniversity of Graz NAWI GrazHeinrichstrasse 288010 GrazAustria
| | - Yuma Otake
- Institute of ChemistryUniversity of Graz NAWI GrazHeinrichstrasse 288010 GrazAustria
- Present address: Laboratory for Chemistry and Life ScienceInstitute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta-cho, Midori-kuYokohama226-8503Japan
| | - Guilhem Coussanes
- Institute of Organic ChemistryUniversity of ViennaWähringer Strasse 381090ViennaAustria
| | - Iakovos Saridakis
- Institute of Organic ChemistryUniversity of ViennaWähringer Strasse 381090ViennaAustria
| | - Nuno Maulide
- Institute of Organic ChemistryUniversity of ViennaWähringer Strasse 381090ViennaAustria
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CCFLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 138010GrazAustria
- Institute of ChemistryUniversity of Graz NAWI GrazHeinrichstrasse 288010 GrazAustria
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6
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Maryasin B, Maulide N. On the Stability of Disubstituted Cyclobutenes - A Computational Study. European J Org Chem 2019; 2019:338-341. [PMID: 31007572 PMCID: PMC6472590 DOI: 10.1002/ejoc.201801243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Indexed: 11/10/2022]
Abstract
A computational study of the electrocyclic ring‐opening of 2‐substituted cyclobutenecarboxylic acids is presented. Detailed calculations suggest a model to predict whether the product of nucleophilic alkylation of a bicyclic lactone electrophile will be a cyclobutenecarboxylic acid or its dienoic acid isomer, based on the used nucleophile.
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Affiliation(s)
- Boris Maryasin
- Institute of Organic Chemistry University of Vienna Währinger Strasse 38 1090 Vienna Austria.,Institute of Theoretical Chemistry University of Vienna Währinger Strasse 17 1090 Vienna Austria
| | - Nuno Maulide
- Institute of Organic Chemistry University of Vienna Währinger Strasse 38 1090 Vienna Austria
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7
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Pusch S, Schollmeyer D, Opatz T. Synthesis and Unusual NMR-Spectroscopic Behavior of a Strained Bicyclic Ammonium Salt. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Stefan Pusch
- Institute of Organic Chemistry; Johannes Gutenberg University; Duesbergweg 10-14 55128 Mainz Germany
| | - Dieter Schollmeyer
- Institute of Organic Chemistry; Johannes Gutenberg University; Duesbergweg 10-14 55128 Mainz Germany
| | - Till Opatz
- Institute of Organic Chemistry; Johannes Gutenberg University; Duesbergweg 10-14 55128 Mainz Germany
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8
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Berger M, Chen Y, Bampali K, Ernst M, Maulide N. Expeditious synthesis of polyacetylenic water hemlock toxins and their effects on the major GABAA receptor isoform. Chem Commun (Camb) 2018; 54:2008-2011. [DOI: 10.1039/c7cc09801d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Classical synthetic approaches to highly unsaturated polyene/yne natural products rely on iterative cross-coupling of linear fragments.
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Affiliation(s)
- Martin Berger
- Institute of Organic Chemistry
- University of Vienna
- 1090 Vienna
- Austria
| | - Yong Chen
- Institute of Organic Chemistry
- University of Vienna
- 1090 Vienna
- Austria
| | - Konstantina Bampali
- Department of Molecular Neurosciences
- Center for Brain Research/Medical University of Vienna
- 1090 Vienna
- Austria
| | - Margot Ernst
- Department of Molecular Neurosciences
- Center for Brain Research/Medical University of Vienna
- 1090 Vienna
- Austria
| | - Nuno Maulide
- Institute of Organic Chemistry
- University of Vienna
- 1090 Vienna
- Austria
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9
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Huang J, Li L, Chen H, Xiao T, He Y, Zhou L. Synthesis of 3-Aryl-2-pyrones by Palladium-Catalyzed Cross-Coupling of Aryl Iodides with Cyclic Vinyldiazo Ester. J Org Chem 2017; 82:9204-9209. [PMID: 28786682 DOI: 10.1021/acs.joc.7b01470] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Huang
- School
of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
- College
of Chemistry and Materials Science, Guangxi Teachers Education University, 175 Mingxiu East Road, Nanning 530001, China
| | - Linyong Li
- School
of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Haoguo Chen
- School
of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Tiebo Xiao
- School
of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Yuwei He
- School
of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
| | - Lei Zhou
- School
of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, China
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10
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Schmidt B, Audörsch S. Stereoselective Total Syntheses of Polyacetylene Plant Metabolites via Ester-Tethered Ring Closing Metathesis. J Org Chem 2017; 82:1743-1760. [PMID: 28085285 DOI: 10.1021/acs.joc.6b02987] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Total syntheses of five naturally occurring polyacetylenes from three different plants are described. These natural products have in common an E,Z-configured conjugated diene linked to a di- or triyne chain. As the key method to stereoselectively establish the E,Z-diene part, an ester-tethered ring-closing metathesis/base-induced eliminative ring opening sequence was used. The results presented herein do not only showcase the utility of this tethered RCM variant but have also prompted us to suggest that the originally assigned absolute configurations of chiral polyacetylenes from Atractylodes macrocephala should be revised or at least reconsidered.
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Affiliation(s)
- Bernd Schmidt
- Universität Potsdam , Institut für Chemie, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam-Golm, Germany
| | - Stephan Audörsch
- Universität Potsdam , Institut für Chemie, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam-Golm, Germany
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11
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Misale A, Niyomchon S, Maulide N. Cyclobutenes: At a Crossroad between Diastereoselective Syntheses of Dienes and Unique Palladium-Catalyzed Asymmetric Allylic Substitutions. Acc Chem Res 2016; 49:2444-2458. [PMID: 27797480 DOI: 10.1021/acs.accounts.6b00375] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The rich chemistry of cyclobutanes is underpinned by a large body of synthetic literature devoted to their synthesis and decoration. This is motivated by the widespread representation of cyclobutane moieties in biologically active natural products and man-made molecules. Surprisingly, this vast array of knowledge finds no parallel in the chemistry of cyclobutenes, their unsaturated analogues. In particular, a dearth of methods to synthesize enantioenriched cyclobutenes is apparent upon cursory investigation of the literature. As a leading example, the photocycloaddition of maleic anhydride to acetylene or dichloroethylene, probably a benchmark of cyclobutene synthesis, delivers a meso cyclic anhydride which can be further converted to a cyclobutene product by enantioselective desymmetrization by ring opening. Nonetheless, such an approach delivers products with a rather inflexible substitution pattern around the four-membered ring. The lack of general approaches has motivated our group and others to develop novel routes to cyclobutene scaffolds, leading to the development of a strategy that combines photochemistry and catalysis. Indeed, we have coupled the simple and efficient photochemical isomerization of 2-pyrone into a strained bicyclo[2.2.0] lactone with palladium-catalyzed allylic alkylation as a simple and versatile access to functionalized cyclobutenes. Several nucleophiles can be added to the activated, strained intermediate, including malonate anions and azlactones. The products are mono- and bicyclic building blocks richly decorated with functional groups. Importantly, they are formed with high levels of diastereoselectivity as expected by the tenets of palladium-catalyzed allylic alkylation, which posit that the oxidative addition and nucleophilic capture steps proceed with inversion of configuration, resulting in overall retention (inversion + inversion). However, the transposition of the methodology to an asymmetric version subsequently led to the surprising discovery of a family of highly enantioselective, diastereodivergent catalytic processes. Indeed, we observed a ligand-dependent stereochemical outcome for a range of palladium-catalyzed allylic alkylations affording either overall retention or overall inversion of configuration, and that with very high levels of enantio- and diastereoselectivity. The new family of diastereodivergent reactions enables the conversion of the aforementioned racemic bicyclo[2.2.0] lactone into each of 4 stereoisomeric products, at will. Although the mechanistic details at the origin of this unusual stereodivergence are not yet fully elucidated, it became clear through our studies that unique Pd-allyl complexes, residing preferentially as their σ-(monohapto)-bound isomers, are at the heart of the process. The cyclobutenes prepared can also engage in electrocyclic ring-opening reactions (often spontaneous depending on the substitution pattern) that link this chemistry with that of diene and polyene frameworks. Using the strategies laid out above, our group was then able to harness the high stereospecificity of electrocyclic reactions and design modular syntheses of several natural products and natural product fragments. We believe that the methods presented herein shall soon pave the way for the streamlined synthesis of more complex polyenic natural products.
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Affiliation(s)
- Antonio Misale
- University of Vienna, Institute of Organic Chemistry, Währinger Straße 38, 1090 Vienna, Austria
| | - Supaporn Niyomchon
- University of Vienna, Institute of Organic Chemistry, Währinger Straße 38, 1090 Vienna, Austria
| | - Nuno Maulide
- University of Vienna, Institute of Organic Chemistry, Währinger Straße 38, 1090 Vienna, Austria
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12
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Dobler D, Reiser O. Synthesis of 6-Substituted 2-Pyrones Starting from Renewable Resources: Total Synthesis of Sibirinone, (E)-6-(Pent-1-en-1-yl)-2H-pyran-2-one, and (E)-6-(Hept-1-en-1-yl)-2H-pyran-2-one. J Org Chem 2016; 81:10357-10365. [DOI: 10.1021/acs.joc.6b01339] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel Dobler
- Institut für Organische
Chemie, Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Oliver Reiser
- Institut für Organische
Chemie, Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
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13
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Henrot M, Jean A, Peixoto PA, Maddaluno J, De Paolis M. Flexible Total Synthesis of (±)-Aureothin, a Potent Antiproliferative Agent. J Org Chem 2016; 81:5190-201. [DOI: 10.1021/acs.joc.6b00878] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthias Henrot
- COBRA-IRCOF, CNRS, Université & INSA de Rouen, Mont Saint Aignan, France
| | - Alexandre Jean
- COBRA-IRCOF, CNRS, Université & INSA de Rouen, Mont Saint Aignan, France
| | | | - Jacques Maddaluno
- COBRA-IRCOF, CNRS, Université & INSA de Rouen, Mont Saint Aignan, France
| | - Michaël De Paolis
- COBRA-IRCOF, CNRS, Université & INSA de Rouen, Mont Saint Aignan, France
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14
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Direct Metal-Free Entry to Aminocyclobutenes or Aminocyclobutenols from Ynamides: Synthetic Applications. Chemistry 2016; 22:8998-9005. [DOI: 10.1002/chem.201601044] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Indexed: 01/28/2023]
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15
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Schmidt B, Audörsch S. Stereoselective Total Synthesis of Atractylodemayne A, a Conjugated 2(E),8(Z),10(E)-Triene-4,6-diyne. Org Lett 2016; 18:1162-5. [DOI: 10.1021/acs.orglett.6b00274] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Bernd Schmidt
- Universitaet Potsdam, Institut fuer Chemie (Organische
Synthesechemie), Karl-Liebknecht-Strasse
24-25, D-14476 Potsdam-Golm, Germany
| | - Stephan Audörsch
- Universitaet Potsdam, Institut fuer Chemie (Organische
Synthesechemie), Karl-Liebknecht-Strasse
24-25, D-14476 Potsdam-Golm, Germany
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16
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Sheikh NS. Captodative substitution induced acceleration effect towards 4π electrocyclic ring-opening of substituted cyclobutenes. RSC Adv 2016. [DOI: 10.1039/c5ra26590h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Significance of quantum chemical calculations as a theoretical tool to identify the optimum substitution pattern for a rapid 4π electrocyclic ring-opening of substituted cyclobutenes is presented.
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Affiliation(s)
- Nadeem S. Sheikh
- Department of Chemistry
- Faculty of Science
- King Faisal University
- Al-Ahsa 31982
- Saudi Arabia
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17
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Sheikh NS. 4π electrocyclisation in domino processes: contemporary trends and synthetic applications towards natural products. Org Biomol Chem 2015; 13:10774-96. [PMID: 26440536 DOI: 10.1039/c5ob01703c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recent most instructive and reliable literature reports which deal with domino processes involving conrotatory 4π electrocyclic reactions, along with a precise mechanistic insight and latest synthetic applications towards biologically active natural products are concisely reviewed. To inspire further research in this domain, a real insight into the overarching emerging themes and potential imminent prospects is also provided.
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Affiliation(s)
- Nadeem S Sheikh
- Department of Chemistry, Faculty of Science, King Faisal University, P.O. Box 380, Al-Ahsa 31982, Saudi Arabia.
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18
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Souris C, Misale A, Chen Y, Luparia M, Maulide N. From Stereodefined Cyclobutenes to Dienes: Total Syntheses of Ieodomycin D and the Southern Fragment of Macrolactin A. Org Lett 2015; 17:4486-9. [PMID: 26349917 DOI: 10.1021/acs.orglett.5b02149] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A copper-promoted flexible synthesis of cyclobutenes carrying simple alkyl chains, enabling even the most hindered nucleophiles to be employed, has been developed. The versatility of this approach was exemplified by a short total synthesis of ieodomycin D and a straightforward preparation of the southeastern fragment of macrolactin A. The latter features a late-stage, double cyclobutene electrocyclic ring opening that directly delivers a bis-diene of defined geometry.
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Affiliation(s)
- Caroline Souris
- University of Vienna , Faculty of Chemistry, Institute of Organic Chemistry, Währinger Straße 38, 1090 Vienna, Austria
| | - Antonio Misale
- University of Vienna , Faculty of Chemistry, Institute of Organic Chemistry, Währinger Straße 38, 1090 Vienna, Austria
| | - Yong Chen
- University of Vienna , Faculty of Chemistry, Institute of Organic Chemistry, Währinger Straße 38, 1090 Vienna, Austria
| | - Marco Luparia
- University of Vienna , Faculty of Chemistry, Institute of Organic Chemistry, Währinger Straße 38, 1090 Vienna, Austria
| | - Nuno Maulide
- University of Vienna , Faculty of Chemistry, Institute of Organic Chemistry, Währinger Straße 38, 1090 Vienna, Austria
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19
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Alcaide B, Almendros P, Fernández I, Lázaro-Milla C. Unveiling the uncatalyzed reaction of alkynes with 1,2-dipoles for the room temperature synthesis of cyclobutenes. Chem Commun (Camb) 2015; 51:3395-8. [PMID: 25622085 DOI: 10.1039/c4cc10111a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
2-(Pyridinium-1-yl)-1,1-bis(triflyl)ethanides have been used as 1,2-dipole precursors in a metal-free direct [2+2] cycloaddition reaction of alkynes. Starting from stable zwitterionic pyridinium salts, the electron deficient olefin 1,1-bis(trifluoromethylsulfonyl)ethene is generated in situ and immediately reacted at room temperature with an alkyne to afford substituted cyclobutenes. Remarkably, this mild and facile uncatalyzed protocol requires neither irradiation nor heating.
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Affiliation(s)
- Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos, Departamento de Química Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040-Madrid, Spain.
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20
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Souris C, Frébault F, Patel A, Audisio D, Houk KN, Maulide N. Stereoselective synthesis of dienyl-carboxylate building blocks: formal synthesis of inthomycin C. Org Lett 2013; 15:3242-5. [PMID: 23763296 DOI: 10.1021/ol401226y] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A direct synthesis of stereodefined halodienes is reported. Those key building blocks enable a concise access to polyenic products, as demonstrated in a modular synthesis of Inthomycin C.
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Affiliation(s)
- Caroline Souris
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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