1
|
Wu JH, Tan JP, Zheng JY, He J, Song Z, Su Z, Wang T. Towards Axially Chiral Pyrazole-Based Phosphorus Scaffolds by Dipeptide-Phosphonium Salt Catalysis. Angew Chem Int Ed Engl 2023; 62:e202215720. [PMID: 36694276 DOI: 10.1002/anie.202215720] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/26/2023]
Abstract
Given the comparatively lower rotational barriers, the catalytic asymmetric construction of axially chiral biaryl structures, especially those containing a five-membered heterocycle, still remains a challenge. Herein, we described a general and modular protocol to access atropisomeric arylpyrazole scaffolds containing a phosphorus unit by a dipeptide phosphonium salt catalyzed reaction involving an oxidative central-to-axial chirality conversion. This reaction features excellent yields and enantioselectivities, broad substrate scope, and a low catalyst loading, delivering axially chiral phosphine compounds.
Collapse
Affiliation(s)
- Jia-Hong Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jian-Ping Tan
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China.,Hunan Province Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, 411104, P. R. China
| | - Jia-Yan Zheng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Jiajia He
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Zhenlei Song
- West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China.,Beijing National Laboratory for Molecular Sciences, Beijing, 100190, P. R. China
| |
Collapse
|
2
|
Hommelsheim R, Bausch S, Selvakumar A, Amer MM, Truong KN, Rissanen K, Bolm C. A Copper-Catalyzed Interrupted Domino Reaction for the Synthesis of Fused Triazolyl Benzothiadiazine-1-oxides. Chemistry 2023; 29:e202203729. [PMID: 36453242 DOI: 10.1002/chem.202203729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/03/2022]
Abstract
Copper(I)-catalyzed domino reactions of 2-azido sulfoximines with 1-iodoalkynes yield fused triazolyl-containing benzothiadiazine-1-oxides. The protocol features the synthesis of two fused heterocyclic rings in one step with good to excellent yields and a broad functional group tolerance. Detailed mechanistic investigations indicate that a copper π-complex initiates a cycloaddition and oxidative C-N coupling reaction sequence. The results suggest an interrupted domino process involving an iodinated triazole as a key intermediate.
Collapse
Affiliation(s)
- Renè Hommelsheim
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Sandra Bausch
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Arjuna Selvakumar
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Mostafa M Amer
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany.,Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt
| | - Khai-Nghi Truong
- University of Jyvaskyla, Department of Chemistry, P.O. Box. 35, Survontie 9 B, 40014, Jyväskylä, Finland
| | - Kari Rissanen
- University of Jyvaskyla, Department of Chemistry, P.O. Box. 35, Survontie 9 B, 40014, Jyväskylä, Finland
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| |
Collapse
|
3
|
Linden M, Hofmann S, Herman A, Ehler N, Bär RM, Waldvogel SR. Electrochemical Synthesis of Pyrazolines and Pyrazoles via [3+2] Dipolar Cycloaddition. Angew Chem Int Ed Engl 2023; 62:e202214820. [PMID: 36478106 DOI: 10.1002/anie.202214820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Pyrazolines and pyrazoles are common and important motifs of pharmaceutical agents and agrochemicals. Herein, the first electrochemical approach for their direct synthesis from easily accessible hydrazones and dipolarophiles up to decagram scale is presented. The application of a biphasic system (aqueous/organic) even allows for the conversion of highly sensitive alkenes, wherein inexpensive sodium iodide is employed in a dual role as supporting electrolyte and mediator. In addition, mechanistic insight into the reaction is given by the isolation of key step intermediates. The relevance of the presented reaction is underlined by the synthesis of commercial herbicide safener mefenpyr-diethyl in good yields.
Collapse
Affiliation(s)
- Martin Linden
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Silja Hofmann
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Antonia Herman
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Nicole Ehler
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Robin M Bär
- Research & Development, Crop Science, Bayer AG, Alfred-Nobel-Str. 50, 40789, Monheim am Rhein, Germany
| | - Siegfried R Waldvogel
- Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| |
Collapse
|
4
|
Guo S, Sun W, Tucker JW, Hesp KD, Szymczak NK. Preparation and Functionalization of Mono- and Polyfluoroepoxides via Fluoroalkylation of Carbonyl Electrophiles. Chemistry 2023; 29:e202203578. [PMID: 36478306 DOI: 10.1002/chem.202203578] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/07/2022] [Accepted: 12/07/2022] [Indexed: 12/12/2022]
Abstract
We outline a new synthetic method to prepare mono- and polyfluoroepoxides from a diverse pool of electrophiles (ketones, acyl chlorides, esters) and fluoroalkyl anion equivalents. The initially formed α-fluoro alkoxides undergo subsequent intramolecular ring closure when heated. We demonstrated the versatility of the method through the isolation of 16 mono- and polyfluoroepoxide products. These compounds provide unique entry points for further diversification via either fluoride migration coupled with ring opening, or defluorinative functionalization reactions, the latter of which can be used as a late-stage method to install select bioactive moieties. The reaction sequences described herein provide a pathway to functionalize the commonly observed products formed from 1,2-addition into carbonyl electrophiles.
Collapse
Affiliation(s)
- Shuo Guo
- Department of Chemistry, University of Michigan, Willard Henry Dow Laboratory, 930 North University Ave., Ann Arbor, MI 48109, USA
| | - Wei Sun
- Department of Chemistry, University of Michigan, Willard Henry Dow Laboratory, 930 North University Ave., Ann Arbor, MI 48109, USA
| | - Joseph W Tucker
- Medicine Design, Pfizer Inc.: Eastern Point Rd., Groton, CT., 06340, USA
| | - Kevin D Hesp
- Medicine Design, Pfizer Inc.: Eastern Point Rd., Groton, CT., 06340, USA
| | - Nathaniel K Szymczak
- Department of Chemistry, University of Michigan, Willard Henry Dow Laboratory, 930 North University Ave., Ann Arbor, MI 48109, USA
| |
Collapse
|
5
|
Wang G, Li L, Jiang Y, Zhao X, Ban X, Shao T, Yin Y, Jiang Z. Kinetic Resolution of Azaarylethynyl Tertiary Alcohols by Chiral Brønsted Acid Catalysed Phosphine-Mediated Deoxygenation. Angew Chem Int Ed Engl 2023; 62:e202214838. [PMID: 36412539 DOI: 10.1002/anie.202214838] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/07/2022] [Accepted: 11/22/2022] [Indexed: 11/23/2022]
Abstract
A chiral Brønsted acid catalysed phosphine-mediated deoxygenation protocol is reported. This metal-free method provides a precise kinetic resolution platform for azaarylethynyl tertiary alcohols, which are a broad category of biologically and synthetically important azaarene derivatives. In addition to providing an efficient method for the first asymmetric preparation of these tertiary alcohols, the strategy facilitates the construction of azaaryl-functionalized allenes with good to excellent enantioselectivities. The high selectivity factors (s up to 235), broad substrate scope, and ability to convert azaaryl compounds into both chiral tertiary alcohols and allenes robustly underscore the efficiency and promising utility of this method. The practicability is further validated by the successful synthesis of deuterated allenes with high ee values and substantial incorporation of deuterium using inexpensive D2 O as the deuterium source.
Collapse
Affiliation(s)
- Guanghui Wang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Lulu Li
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Yifeng Jiang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Xiaowei Zhao
- International Scientific and Technological Cooperation Base of Chiral Chemistry, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Xu Ban
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Tianju Shao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Yanli Yin
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China.,College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou, Henan, 450001, P. R. China
| | - Zhiyong Jiang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China.,International Scientific and Technological Cooperation Base of Chiral Chemistry, Henan University, Kaifeng, Henan, 475004, P. R. China
| |
Collapse
|
6
|
Zoll AJ, Molas JC, Mercado BQ, Ellman JA. Imine Directed Cp*Rh III -Catalyzed N-H Functionalization and Annulation with Amino Amides, Aldehydes, and Diazo Compounds. Angew Chem Int Ed Engl 2023; 62:e202210822. [PMID: 36331194 PMCID: PMC9805510 DOI: 10.1002/anie.202210822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Indexed: 11/06/2022]
Abstract
A multicomponent annulation that proceeds by imine directed Cp*RhIII -catalyzed N-H functionalization is disclosed. The transformation affords piperazinones displaying a range of functionality and is the first example of transition metal-catalyzed multicomponent N-H functionalization. A broad range of readily available α-amino amides, including those derived from glycine, α-substituted, and α,α-disubstituted amino acids, were effective inputs and enabled the incorporation of a variety of amino acid side chains with minimal racemization. Branched and unbranched alkyl aldehydes and various stabilized diazo compounds were also efficient reactants. The piperazinone products were further modified through efficient transformations. Mechanistic studies, including X-ray crystallographic characterization of a catalytically competent five-membered rhodacycle with imine and amide nitrogen chelation, provide support for the proposed mechanism.
Collapse
Affiliation(s)
| | | | - Brandon Q. Mercado
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
| | - Jonathan A. Ellman
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, CT 06520 (USA)
| |
Collapse
|
7
|
Li L, Mayer RJ, Stephenson DS, Mayer P, Ofial AR, Mayr H. Quantification of the Electrophilicities of Diazoalkanes: Kinetics and Mechanism of Azo Couplings with Enamines and Sulfonium Ylides. Chemistry 2022; 28:e202201376. [PMID: 35758555 DOI: 10.1002/chem.202201376] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Indexed: 01/07/2023]
Abstract
Kinetics and mechanism of the reactions of methyl diazoacetate, dimethyl diazomalonate, 4-nitrophenyldiazomethane, and diphenyldiazomethane with sulfonium ylides and enamines were investigated by UV-Vis and NMR spectroscopy. Ordinary alkenes undergo 1,3-dipolar cycloadditions with these diazo compounds. In contrast, sulfonium ylides and enamines attack at the terminal nitrogen of the diazo alkanes to give zwitterions, which undergo various subsequent reactions. As only one new bond is formed in the rate-determining step of these reactions, the correlation lg k2 (20 °C)=sN (N+E) could be used to determine the one-bond electrophilicities E of the diazo compounds from the measured second-order rate constants and the known reactivity indices N and sN of the sulfonium ylides and enamines. The resulting electrophilicity parameters (-21<E<-18), which are 11-14 orders of magnitude smaller than that of the benzenediazonium ion, are used to define the scope of one-bond nucleophiles which may react with these diazoalkanes.
Collapse
Affiliation(s)
- Le Li
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Robert J Mayer
- Institut des Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg & CNRS, 8 Allée Gaspard Monge, 67000, Strasbourg, France
| | - David S Stephenson
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Peter Mayer
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Armin R Ofial
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| | - Herbert Mayr
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany
| |
Collapse
|
8
|
Seoane A, Mascareñas JL. Exporting Homogeneous Transition Metal Catalysts to Biological Habitats. European J Org Chem 2022; 2022:e202200118. [PMID: 36248016 PMCID: PMC9542366 DOI: 10.1002/ejoc.202200118] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/16/2022] [Indexed: 01/23/2023]
Abstract
The possibility of performing designed transition-metal catalyzed reactions in biological and living contexts can open unprecedented opportunities to interrogate and interfere with biology. However, the task is far from obvious, in part because of the presumed incompatibly between organometallic chemistry and complex aqueous environments. Nonetheless, in the past decade there has been a steady progress in this research area, and several transition-metal (TM)-catalyzed bioorthogonal and biocompatible reactions have been developed. These reactions encompass a wide range of mechanistic profiles, which are very different from those used by natural metalloenzymes. Herein we present a summary of the latest progress in the field of TM-catalyzed bioorthogonal reactions, with a special focus on those triggered by activation of multiple carbon-carbon bonds.
Collapse
Affiliation(s)
- Andrés Seoane
- Centro Singular de Investigación Química Biolóxica e Materiais Moleculares (CIQUS)Departamento de Química Orgánica.Universidade de Santiago de Compostela15782Santiago de CompostelaA CoruñaSpain
| | - José Luis Mascareñas
- Centro Singular de Investigación Química Biolóxica e Materiais Moleculares (CIQUS)Departamento de Química Orgánica.Universidade de Santiago de Compostela15782Santiago de CompostelaA CoruñaSpain
| |
Collapse
|
9
|
Pommainville A, Campeau D, Gagosz F. The Synthetic Potential of Thiophenium Ylide Cycloadducts**. Angew Chem Int Ed Engl 2022; 61:e202205963. [DOI: 10.1002/anie.202205963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Alice Pommainville
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa K1N 6N5 Canada
| | - Dominic Campeau
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa K1N 6N5 Canada
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa K1N 6N5 Canada
| |
Collapse
|
10
|
Vardé M, Marino C, Repetto E, Varela OJ. Enantioselective Synthesis of 2,3,4,5‐Tetra(hydroxyalkyl)pyrrolidines through 1,3‐Dipolar Cycloadditions. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mariana Vardé
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Organic chemistry ARGENTINA
| | - Carla Marino
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Organic chemistry ARGENTINA
| | - Evangelina Repetto
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Organic chemistry ARGENTINA
| | - Oscar Jose Varela
- Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Organic Chemistry Pabellon 2, Ciudad Universitaria 1428 Buenos Aires ARGENTINA
| |
Collapse
|
11
|
Cherkasov SA, Kaletina PM, Polienko YF, Parkhomenko D. The Kinetic Solvent Effect on 1,3‐Dipolar Cycloaddition to 2,2,5,5‐Tetramethyl‐3‐imidazoline‐3‐oxide‐1‐oxyl. Chempluschem 2022; 87:e202200119. [DOI: 10.1002/cplu.202200119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 07/04/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Sergey A. Cherkasov
- NIOCH SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN laboratory of magnetic radiospectroscopy 9 Lavrentiev Avenue 630090 Novosibirsk RUSSIAN FEDERATION
| | - Polina M. Kaletina
- NIOCH SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN laboratory of magnetic radiospectroscopy 9 Lavrentiev Avenue 630090 Novosibirsk RUSSIAN FEDERATION
| | - Yuliya F. Polienko
- NIOCH SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN laboratory of nitrogenous compounds 9 Lavrentiev Avenue 630090 Novosibirsk RUSSIAN FEDERATION
| | - Dmitriy Parkhomenko
- NIOCH SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN laboratory of magnetic radiospectroscopy 9 Lavrentiev Avenue 630090 Novosibirsk RUSSIAN FEDERATION
| |
Collapse
|
12
|
Pommainville A, Campeau D, Gagosz F. The Synthetic Potential of Thiophenium Ylide Cycloadducts**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alice Pommainville
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa K1N 6N5 Canada
| | - Dominic Campeau
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa K1N 6N5 Canada
| | - Fabien Gagosz
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa K1N 6N5 Canada
| |
Collapse
|
13
|
Tao LF, Zhang S, Huang F, Wang WT, Luo ZH, Qian L, Liao JY. Diastereo- and Enantioselective Silver-Catalyzed [3+3] Cycloaddition and Kinetic Resolution of Azomethine Imines with Activated Isocyanides. Angew Chem Int Ed Engl 2022; 61:e202202679. [PMID: 35289973 DOI: 10.1002/anie.202202679] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 12/15/2022]
Abstract
In contrast to the well-established [3+2] cycloaddition reactions, the catalytic enantioselective [3+n] (n≥3) cycloaddition reaction of activated isocyanides for the preparation of six-membered or larger ring systems has remained underdeveloped. Herein, we report the first example of highly diastereo- and enantioselective [3+3] cycloaddition of activated isocyanides with azomethine imines. By employing silver catalysis, a wide range of biologically important bicyclic 1,2,4-triazines were obtained in high yields (up to 99 %) with good to excellent stereoselectivities (up to >20 : 1 dr, 99 % ee). In addition, the same catalytic system could be applied to both the late-stage functionalization of complex bioactive molecules and the kinetic resolution of racemic azomethine imines, further highlighting its versatility and synthetic utility.
Collapse
Affiliation(s)
- Ling-Fei Tao
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Sen Zhang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Fen Huang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Wen-Tao Wang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Zhang-Hong Luo
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Linghui Qian
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Jia-Yu Liao
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China.,Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou, 310018, China
| |
Collapse
|
14
|
Seeman JI. The Many Chemists Who Could Have Proposed the Woodward-Hoffmann Rules But Didn't: The Organic Chemists Who Discovered the Smoking Guns [ ]. CHEM REC 2022; 22:e202200065. [PMID: 35713274 DOI: 10.1002/tcr.202200065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/06/2022] [Indexed: 01/25/2023]
Abstract
It is a reasonable question to ask, why, as of 1965 when the five Woodward-Hoffmann communications appeared, did no other organic chemist discover the orbital symmetry rules for pericyclic reactions? Two theoretical chemists - Luitzen Oosterhoff (in 1961) and Kenichi Fukui (in 1964) had discovered portions of the orbital symmetry rules before Woodward and Hoffmann. Why not organic chemists? Indeed, perhaps the greatest motivation to discover the mechanism of a mysterious reaction is to uncover key examples of that mysterious reaction in your very own laboratory. The stories of 20 chemists and R. B. Woodward are discussed in this paper which is Paper 6 in a 27-paper series on the history of Woodward-Hoffmann rules. Social, political, and scientific explanations will also be presented as partial explanations as to why none of these individuals - except Woodward with Hoffmann - solved the pericyclic no-mechanism problem.
Collapse
Affiliation(s)
- Jeffrey I Seeman
- Department of Chemistry, University of Richmond, Richmond, VA 23173, USA
| |
Collapse
|
15
|
Volpi G. Luminescent imidazo[1,5‐a] pyridine scaffold: synthetic heterocyclization strategies overview and promising applications. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Giorgio Volpi
- University of Turin: Universita degli Studi di Torino Chemistry ITALY
| |
Collapse
|
16
|
Tao L, Zhang S, Huang F, Wang W, Luo Z, Qian L, Liao J. Diastereo‐ and Enantioselective Silver‐Catalyzed [3+3] Cycloaddition and Kinetic Resolution of Azomethine Imines with Activated Isocyanides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ling‐Fei Tao
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Sen Zhang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Fen Huang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Wen‐Tao Wang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Zhang‐Hong Luo
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Linghui Qian
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Jia‐Yu Liao
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University Hangzhou 310018 China
| |
Collapse
|
17
|
Li L, Mayer P, Stephenson DS, Ofial AR, Mayer RJ, Mayr H. An Overlooked Pathway in 1,3‐Dipolar Cycloadditions of Diazoalkanes with Enamines. Angew Chem Int Ed Engl 2022; 61:e202117047. [PMID: 35023245 PMCID: PMC9306659 DOI: 10.1002/anie.202117047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Indexed: 11/25/2022]
Abstract
Methyl diazoacetate reacts with 1‐(N‐pyrrolidino)cycloalkenes to give products of 1,3‐dipolar cycloadditions and azo couplings. The kinetics and mechanisms of these reactions were investigated by NMR spectroscopy and DFT calculations. Orthogonal π‐systems in the 1,3‐dipoles of the propargyl‐allenyl type allow for two separate reaction pathways for the (3+2)‐cycloadditions. The commonly considered concerted pathway is rationalized by the interaction of the enamine HOMO with LUMO+1, the lowest unoccupied orbital of the heteropropargyl anion fragment of methyl diazoacetate. We show that HOMO/LUMO(π*N=N) interactions between enamines and methyl diazoacetate open a previously unrecognized reaction path for stepwise cycloadditions through zwitterionic intermediates with barriers approximately 40 kJ mol−1 lower in energy in CHCl3 (DFT calculations) than for the concerted path.
Collapse
Affiliation(s)
- Le Li
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Germany
| | - Peter Mayer
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Germany
| | - David S. Stephenson
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Germany
| | - Armin R. Ofial
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Germany
| | - Robert J. Mayer
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS) Université de Strasbourg & CNRS 8 Allée Gaspard Monge 67000 Strasbourg France
| | - Herbert Mayr
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Germany
| |
Collapse
|
18
|
Rico L, Li D, Hanessian S. Stereocontrolled Synthesis of 1,3‐Substituted 2‐Oxabicyclo[3.1.0]hexanes as Ring‐Constrained Tetrahydrofuranosyl C‐Glycosides. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lorena Rico
- Department of Chemistry Université de Montréal Station Centre-Ville, C.P. 6128 Montreal QC, H3 C 3 J7 Canada
| | - Da Li
- Department of Chemistry Université de Montréal Station Centre-Ville, C.P. 6128 Montreal QC, H3 C 3 J7 Canada
| | - Stephen Hanessian
- Department of Chemistry Université de Montréal Station Centre-Ville, C.P. 6128 Montreal QC, H3 C 3 J7 Canada
| |
Collapse
|
19
|
Li L, Mayer P, Stephenson DS, Ofial AR, Mayer RJ, Mayr H. An Overlooked Pathway in 1,3‐Dipolar Cycloadditions of Diazoalkanes with Enamines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Le Li
- Ludwig-Maximilians-Universitat Munchen Fakultat fur Chemie und Pharmazie Dept. Chemie GERMANY
| | - Peter Mayer
- Ludwig-Maximilians-Universitat Munchen Fakultat fur Chemie und Pharmazie Dept. Chemie GERMANY
| | - David S. Stephenson
- Ludwig-Maximilians-Universitat Munchen Fakultat fur Chemie und Pharmazie Dept. Chemie GERMANY
| | - Armin R. Ofial
- Ludwig-Maximilians-Universitat Munchen Fakultat fur Chemie und Pharmazie Dept. Chemie GERMANY
| | - Robert J. Mayer
- Université de Strasbourg: Universite de Strasbourg Institut de Science et d'Ingenierie Supramoleculaire (ISIS) FRANCE
| | - Herbert Mayr
- Ludwig-Maximilians-Universität München Fakultät für Chemie und Pharmazie: Ludwig-Maximilians-Universitat Munchen Fakultat fur Chemie und Pharmazie Dept. Chemie Butenandtstr. 5-13 81377 München GERMANY
| |
Collapse
|
20
|
Haas TM, Wiesler S, Dürr‐Mayer T, Ripp A, Fouka P, Qiu D, Jessen HJ. The Aryne Phosphate Reaction**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Thomas M. Haas
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Stefan Wiesler
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Tobias Dürr‐Mayer
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Alexander Ripp
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
- DFG Cluster of Excellence “Living, Adaptive and Energy-Autonomous Materials Systems” (livMatS) 79110 Freiburg Germany
| | - Paraskevi Fouka
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Danye Qiu
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Henning J. Jessen
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
- DFG Cluster of Excellence “Living, Adaptive and Energy-Autonomous Materials Systems” (livMatS) 79110 Freiburg Germany
| |
Collapse
|
21
|
Li J, Daniliuc CG, Kehr G, Erker G. Three‐Component Reaction to 1,4,2‐Diazaborole‐Type Heteroarene Systems. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jun Li
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraβe 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraβe 40 48149 Münster Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraβe 40 48149 Münster Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraβe 40 48149 Münster Germany
| |
Collapse
|
22
|
Li J, Daniliuc CG, Kehr G, Erker G. Three-Component Reaction to 1,4,2-Diazaborole-Type Heteroarene Systems. Angew Chem Int Ed Engl 2021; 60:27053-27061. [PMID: 34597449 DOI: 10.1002/anie.202111946] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Indexed: 12/14/2022]
Abstract
The borane FmesBH2 reacts in a three-component reaction with an isonitrile and a small series of organonitriles to give rare examples of the class of dihydro-1,4,2-diazaborole derivatives. In a related way, annulated BN-indolizine derivatives became conveniently available, as were dihydro-1,4,2-oxaza- or thiazaborole derivatives. The nucleophilic framework of a dihydro-1,4,2-diazaborole example allowed for an uncatalyzed acylation reaction. It also served as a 1,3-dipolar reagent and underwent a [3+2] cycloaddition/[4+2] cycloreversion sequence when treated with methyl propiolate to give the respective pyrrole product. The [3+2] cycloaddition product of a dihydro-1,4,2-diazaborole derivative with N-phenylmaleimide was isolated and its heterobicyclo[2.2.1]heptane derived structure characterized by X-ray diffraction.
Collapse
Affiliation(s)
- Jun Li
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 40, 48149, Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 40, 48149, Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraβe 40, 48149, Münster, Germany
| |
Collapse
|
23
|
Haas TM, Wiesler S, Dürr-Mayer T, Ripp A, Fouka P, Qiu D, Jessen HJ. The Aryne Phosphate Reaction*. Angew Chem Int Ed Engl 2021; 61:e202113231. [PMID: 34727582 PMCID: PMC9299019 DOI: 10.1002/anie.202113231] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Indexed: 11/10/2022]
Abstract
Condensed phosphates are a critically important class of molecules in biochemistry. Non‐natural analogues are important for various applications, such as single‐molecule real‐time DNA sequencing. Often, such analogues contain more than three phosphate units in their oligophosphate chain. Consequently, investigations into phosphate reactivity enabling new ways of phosphate functionalization and oligophosphorylation are essential. Here, we scrutinize the potential of phosphates to act as arynophiles, paving the way for follow‐up oligophosphorylation reactions. The aryne phosphate reaction is a powerful tool to—depending on the perspective—(oligo)phosphorylate arenes or arylate (oligo‐cyclo)phosphates. Based on Kobayashi‐type o‐silylaryltriflates, the aryne phosphate reaction enables rapid entry into a broad spectrum of arylated products, like monophosphates, diphosphates, phosphodiesters and polyphosphates. The synthetic potential of these new transformations is demonstrated by efficient syntheses of nucleotide analogues and an unprecedented one‐flask octaphosphorylation.
Collapse
Affiliation(s)
- Thomas M Haas
- Institute of Organic Chemistry, Albert-Ludwigs University Freiburg, Albertstraße 21, 79102, Freiburg im Breisgau, Germany
| | - Stefan Wiesler
- Institute of Organic Chemistry, Albert-Ludwigs University Freiburg, Albertstraße 21, 79102, Freiburg im Breisgau, Germany
| | - Tobias Dürr-Mayer
- Institute of Organic Chemistry, Albert-Ludwigs University Freiburg, Albertstraße 21, 79102, Freiburg im Breisgau, Germany
| | - Alexander Ripp
- Institute of Organic Chemistry, Albert-Ludwigs University Freiburg, Albertstraße 21, 79102, Freiburg im Breisgau, Germany.,DFG Cluster of Excellence "Living, Adaptive and Energy-Autonomous Materials Systems" (livMatS), 79110, Freiburg, Germany
| | - Paraskevi Fouka
- Institute of Organic Chemistry, Albert-Ludwigs University Freiburg, Albertstraße 21, 79102, Freiburg im Breisgau, Germany
| | - Danye Qiu
- Institute of Organic Chemistry, Albert-Ludwigs University Freiburg, Albertstraße 21, 79102, Freiburg im Breisgau, Germany
| | - Henning J Jessen
- Institute of Organic Chemistry, Albert-Ludwigs University Freiburg, Albertstraße 21, 79102, Freiburg im Breisgau, Germany.,DFG Cluster of Excellence "Living, Adaptive and Energy-Autonomous Materials Systems" (livMatS), 79110, Freiburg, Germany
| |
Collapse
|
24
|
Jyoti Kalita S, Zhao Z, Li Z, Cheng F, Zhao Y, Huang Y. Diastereodivergent 1,3‐Dipolar Cycloaddition of α‐Fluoro‐α,β‐Unsaturated Arylketones and Azomethine Ylides: Experimental and Theoretical DFT Studies. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Subarna Jyoti Kalita
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Zhen‐Ni Zhao
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Zi‐Han Li
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Feng Cheng
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Yan Zhao
- State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| | - Yi‐Yong Huang
- Department of Chemistry School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology 122 Luoshi Road 430070 Wuhan China
| |
Collapse
|
25
|
Chen C, Daniliuc CG, Kehr G, Erker G. Formation and Cycloaddition Reactions of a Reactive Boraalkene Stabilized Internally by N-Heterocyclic Carbene. Angew Chem Int Ed Engl 2021; 60:19905-19911. [PMID: 34219331 DOI: 10.1002/anie.202106724] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/28/2021] [Indexed: 01/07/2023]
Abstract
The synthesis of element-carbon double bonds is of great importance for the development and understanding of reactive π-bonded systems in chemistry. The seven-membered heterocyclic system 4 b is readily made by internal C-H activation at a pendent isopropyl methyl group of the respective [(IPr)C6 F5 BH]+ borenium ion. Subsequent deprotonation with the IMes carbene gives the neutral cyclic boraalkene system 5 b. The B=C double bond in compound 5 b adds carbon dioxide, CS2 , sulfur dioxide, phenyl isocyanate, an acetylenic ester or two NO molecules to give the corresponding four-membered ring annulated heterocycles. With sulfur or selenium 5 b gives the respective three-membered ring systems. N2 O reacts with 5 b to give a mixture of the related oxaborirane 18 and a unique [B]OH containing diazoalkane product 19.
Collapse
Affiliation(s)
- Chaohuang Chen
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| |
Collapse
|
26
|
Su Y, Dong K, Zheng H, Doyle MP. Generation of Diazomethyl Radicals by Hydrogen Atom Abstraction and Their Cycloaddition with Alkenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yong‐Liang Su
- Department of Chemistry The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Kuiyong Dong
- Department of Chemistry The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Haifeng Zheng
- Department of Chemistry The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Michael P. Doyle
- Department of Chemistry The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| |
Collapse
|
27
|
Mummel S, Lederle F, Hübner EG, Namyslo JC, Nieger M, Schmidt A. Sydnone Methides-A Forgotten Class of Mesoionic Compounds for the Generation of Anionic N-Heterocyclic Carbenes. Angew Chem Int Ed Engl 2021; 60:18882-18887. [PMID: 34153173 PMCID: PMC8456854 DOI: 10.1002/anie.202107495] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Indexed: 12/25/2022]
Abstract
Sydnone methides are described from which only one single example has been mentioned in the literature so far. Their deprotonation gave anions which can be formulated as π-electron rich anionic N-heterocyclic carbenes. Sulfur and selenium adducts were stabilized as their methyl ethers, and mercury, gold as well as rhodium complexes of the sydnone methide carbenes were prepared. Sydnone methide anions also undergo C-C coupling reactions with 1-fluoro-4-iodobenzene under Pd(PPh3 )4 and CuBr catalysis. 77 Se NMR resonance frequencies and 1 JC4-Se as well as 1 JC4-H coupling constants have been determined to gain knowledge about the electronic properties of the anionic N-heterocyclic carbenes. The carbene carbon atom of the sydnone methide anion 3 j resonates at δ=155.2 ppm in 13 C NMR spectroscopy at -40 °C which is extremely shifted upfield in comparison to classical N-heterocyclic carbenes.
Collapse
Affiliation(s)
- Sebastian Mummel
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
| | - Felix Lederle
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
- Fraunhofer Heinrich Hertz Institute HHIFiber Optical Sensor SystemsAm Stollen 19HD-38640GoslarGermany
| | - Eike G. Hübner
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
- Fraunhofer Heinrich Hertz Institute HHIFiber Optical Sensor SystemsAm Stollen 19HD-38640GoslarGermany
| | - Jan C. Namyslo
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
| | - Martin Nieger
- University of HelsinkiDepartment of ChemistryP.O. Box 55FIN-00014HelsinkiFinland
| | - Andreas Schmidt
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
| |
Collapse
|
28
|
Mummel S, Lederle F, Hübner EG, Namyslo JC, Nieger M, Schmidt A. Sydnonmethide – fast vergessene Mesoionen als Vorläufermoleküle von anionischen N‐heterocyclischen Carbenen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Sebastian Mummel
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
| | - Felix Lederle
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
- Fraunhofer Heinrich-Hertz-Institut HHI Faseroptische Sensorsysteme Am Stollen 19H 38640 Goslar Deutschland
| | - Eike G. Hübner
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
- Fraunhofer Heinrich-Hertz-Institut HHI Faseroptische Sensorsysteme Am Stollen 19H 38640 Goslar Deutschland
| | - Jan C. Namyslo
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
| | - Martin Nieger
- Universität Helsinki Department für Chemie P.O. Box 55 00014 Helsinki Finnland
| | - Andreas Schmidt
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
| |
Collapse
|
29
|
Belabbes A, Selva V, Foubelo F, De Gracia Retamosa M, Sansano JM. Synthesis of Spiro{pyrrolidine‐3,1′‐pyrrolo[3,4‐
c
]pyrrole} Basic Framework by Multicomponent 1,3‐Dipolar Cycloaddition. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Asmaa Belabbes
- University of Alicante, Department of Organic Chemistry Instituto de Síntesis Orgánica (ISO) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) PO Box 99 03080 Alicante Spain
| | - Verónica Selva
- University of Alicante, Department of Organic Chemistry Instituto de Síntesis Orgánica (ISO) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) PO Box 99 03080 Alicante Spain
| | - Francisco Foubelo
- University of Alicante, Department of Organic Chemistry Instituto de Síntesis Orgánica (ISO) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) PO Box 99 03080 Alicante Spain
| | - M. De Gracia Retamosa
- University of Alicante, Department of Organic Chemistry Instituto de Síntesis Orgánica (ISO) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) PO Box 99 03080 Alicante Spain
| | - José M. Sansano
- University of Alicante, Department of Organic Chemistry Instituto de Síntesis Orgánica (ISO) and Centro de Innovación en Química Avanzada (ORFEO-CINQA) PO Box 99 03080 Alicante Spain
| |
Collapse
|
30
|
Chen C, Daniliuc CG, Kehr G, Erker G. Formation and Cycloaddition Reactions of a Reactive Boraalkene Stabilized Internally by
N
‐Heterocyclic Carbene. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106724] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Chaohuang Chen
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| |
Collapse
|
31
|
Ren P, Li Q, Song T, Wang Z, Motokura K, Yang Y. Highly Efficient and Stable Atomically Dispersed Cu Catalyst for Azide‐Alkyne Cycloaddition Reaction. ChemCatChem 2021. [DOI: 10.1002/cctc.202100831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Peng Ren
- CAS Key Laboratory of Bio-Based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qinglin Li
- CAS Key Laboratory of Bio-Based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Tao Song
- CAS Key Laboratory of Bio-Based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- Shandong Energy Institute Qingdao 266101 P. R. China
- Qingdao New Energy Shandong Laboratory Qingdao 266101 P. R. China
| | - Zhaozhan Wang
- CAS Key Laboratory of Bio-Based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- Shandong Energy Institute Qingdao 266101 P. R. China
- Qingdao New Energy Shandong Laboratory Qingdao 266101 P. R. China
| | - Ken Motokura
- Department of Chemistry and Life Science Yokohama National University Yokohama 240-8501 Japan
| | - Yong Yang
- CAS Key Laboratory of Bio-Based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China
- Shandong Energy Institute Qingdao 266101 P. R. China
- Qingdao New Energy Shandong Laboratory Qingdao 266101 P. R. China
| |
Collapse
|
32
|
Su YL, Dong K, Zheng H, Doyle MP. Generation of Diazomethyl Radicals by Hydrogen Atom Abstraction and Their Cycloaddition with Alkenes. Angew Chem Int Ed Engl 2021; 60:18484-18488. [PMID: 34043866 DOI: 10.1002/anie.202105472] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/23/2021] [Indexed: 12/16/2022]
Abstract
A general catalytic methodology for the synthesis of pyrazolines from α-diazo compounds and conjugated alkenes is reported. The direct hydrogen atom transfer (HAT) process of α-diazo compounds promoted by the tert-butylperoxy radical generates electrophilic diazomethyl radicals, thereby reversing the reactivity of the carbon atom attached with the diazo group. The regiocontrolled addition of diazomethyl radicals to carbon-carbon double bonds followed by intramolecular ring closure on the terminal diazo nitrogen and tautomerization affords a diverse set of pyrazolines in good yields with excellent regioselectivity. This strategy overcomes the limitations of electron-deficient alkenes in traditional dipolar [3+2]-cycloaddition of α-diazo compounds with alkenes. Furthermore, the straightforward formation of the diazomethyl radicals provides umpolung reactivity, thus opening new opportunities for the versatile transformations of diazo compounds.
Collapse
Affiliation(s)
- Yong-Liang Su
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Kuiyong Dong
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Haifeng Zheng
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Michael P Doyle
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| |
Collapse
|
33
|
Reißig H. Eine Hommage an Siegfried Hünig und seine Forschung. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101550] [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)
- Hans‐Ulrich Reißig
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Deutschland
| |
Collapse
|
34
|
Reissig HU. A Homage to Siegfried Hünig and His Research. Angew Chem Int Ed Engl 2021; 60:9180-9191. [PMID: 33738963 DOI: 10.1002/anie.202101550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Indexed: 11/07/2022]
Abstract
Examples from different research areas of Siegfried Hünig are displayed to remind us that organic chemistry owes much more than Hünig's base to this exceptionally versatile and creative chemist. The main research lines dealing with the synthesis and physical characterization of new dyes, multistage redox systems, and organic metals will be presented as well as his contributions to enamine chemistry, the discovery of diimine as a hydrogenation agent, and nucleophilic acylation with trimethylsilyl cyanide, which are less well-known nowadays. In addition, exotic compounds with parallel C=C and N=N bonds were systematically studied in Hünig's group. Reflecting on the development of his research demonstrates both the importance of a systematic approach and how fruitful entirely unexpected results are if they meet a "well-prepared mind". During Hünig's academic career, teaching played an indisputable role. His efforts in modernizing the chemistry institute at Würzburg and his support of young researchers in the academic system in Germany are also highlighted.
Collapse
Affiliation(s)
- Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany
| |
Collapse
|
35
|
Bao G, Wang P, Li G, Yu C, Li Y, Liu Y, He Z, Zhao T, Rao J, Xie J, Hong L, Sun W, Wang R. 1,3‐Dipolar Cycloaddition between Dehydroalanines and C,N‐Cyclic Azomethine Imines: Application to Late‐Stage Peptide Modification. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Guangjun Bao
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Peng Wang
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Guofeng Li
- School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 China
| | - Changjun Yu
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Yiping Li
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Yuyang Liu
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Zeyuan He
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Tiantian Zhao
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Jing Rao
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Junqiu Xie
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Liang Hong
- School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 China
| | - Wangsheng Sun
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Rui Wang
- School of Life Sciences Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science Chinese Academy of Medical Sciences, 2019RU066 Lanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| |
Collapse
|
36
|
da S M Forezi L, Lima CGS, Amaral AAP, Ferreira PG, de Souza MCBV, Cunha AC, de C da Silva F, Ferreira VF. Bioactive 1,2,3-Triazoles: An Account on their Synthesis, Structural Diversity and Biological Applications. CHEM REC 2021; 21:2782-2807. [PMID: 33570242 DOI: 10.1002/tcr.202000185] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 12/14/2022]
Abstract
The triazole heterocycle is a privileged scaffold in medicinal chemistry, since its structure is present in a large number of biologically active molecules, including several drugs currently in the market. Due to their vast applications, a wide variety of methods are described for their preparation, such as the 1,3-dipolar cycloaddition and processes involving diazo compounds and diazo transfer reactions. Considering the significant number of contributions from our research group to this chemistry in recent decades, in this account we discuss both the development of new methods for the synthesis of 1,2,3-triazoles and the preparation of new triazole-functionalized biologically active molecules using classical approaches.
Collapse
Affiliation(s)
- Luana da S M Forezi
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Campus do Valonguinho, 24020-150, Niterói, RJ, Brazil
| | - Carolina G S Lima
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Campus do Valonguinho, 24020-150, Niterói, RJ, Brazil
| | - Adriane A P Amaral
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Campus do Valonguinho, 24020-150, Niterói, RJ, Brazil
| | - Patricia G Ferreira
- Departamento de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal Fluminense, R. Dr. Mario Vianna, 523 - Santa Rosa, 24241-000, Niterói, RJ, Brazil
| | - Maria Cecília B V de Souza
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Campus do Valonguinho, 24020-150, Niterói, RJ, Brazil
| | - Anna C Cunha
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Campus do Valonguinho, 24020-150, Niterói, RJ, Brazil
| | - Fernando de C da Silva
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Campus do Valonguinho, 24020-150, Niterói, RJ, Brazil
| | - Vitor F Ferreira
- Departamento de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal Fluminense, R. Dr. Mario Vianna, 523 - Santa Rosa, 24241-000, Niterói, RJ, Brazil
| |
Collapse
|
37
|
Bao G, Wang P, Li G, Yu C, Li Y, Liu Y, He Z, Zhao T, Rao J, Xie J, Hong L, Sun W, Wang R. 1,3-Dipolar Cycloaddition between Dehydroalanines and C,N-Cyclic Azomethine Imines: Application to Late-Stage Peptide Modification. Angew Chem Int Ed Engl 2021; 60:5331-5338. [PMID: 33179384 DOI: 10.1002/anie.202012523] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/03/2020] [Indexed: 12/12/2022]
Abstract
A non-catalytic, mild, and easy-to-handle protecting group switched 1,3-dipolar cycloaddition (1,3-DC) between bi- or mono-N-protected Dha and C,N-cyclic azomethine imines, which afford various quaternary amino acids with diverse scaffolds, is disclosed. Specifically, normal-electron-demand 1,3-DC reaction occurs between bi-N-protected Dha and C,N-cyclic azomethine imines, while inverse-electron-demand 1,3-DC reaction occurs between mono-N-protected Dha and C,N-cyclic azomethine imines. Above all, the reactions can be carried out between peptides with Dha residues at the position of interest and C,N-cyclic azomethine imines, both in homogeneous phase and on resins in SPPS. It provides a new toolkit for late-stage peptide modification, labeling, and peptide-drug conjugation. To shed light on the high regioselectivity of the reaction, DFT calculations were carried out, which were qualitatively consistent with the experimental observations.
Collapse
Affiliation(s)
- Guangjun Bao
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Peng Wang
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Guofeng Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Changjun Yu
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Yiping Li
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Yuyang Liu
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Zeyuan He
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Tiantian Zhao
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Jing Rao
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Junqiu Xie
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Liang Hong
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Wangsheng Sun
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| | - Rui Wang
- School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences & Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, 199 West Donggang Rd, Lanzhou, 730000, Gansu, P. R. China
| |
Collapse
|
38
|
Wienhold M, Molloy JJ, Daniliuc CG, Gilmour R. Coumarins by Direct Annulation: β‐Borylacrylates as Ambiphilic C
3
‐Synthons. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Max Wienhold
- Organisch Chemisches Intitut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - John J. Molloy
- Organisch Chemisches Intitut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch Chemisches Intitut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches Intitut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| |
Collapse
|
39
|
Wienhold M, Molloy JJ, Daniliuc CG, Gilmour R. Coumarins by Direct Annulation: β-Borylacrylates as Ambiphilic C 3 -Synthons. Angew Chem Int Ed Engl 2021; 60:685-689. [PMID: 32975367 PMCID: PMC7839779 DOI: 10.1002/anie.202012099] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Indexed: 12/26/2022]
Abstract
Modular β-borylacrylates have been validated as programmable, ambiphilic C3 -synthons in the cascade annulation of 2-halo-phenol derivatives to generate structurally and electronically diverse coumarins. Key to this [3+3] disconnection is the BPin unit which serves a dual purpose as both a traceless linker for C(sp2 )-C(sp2 ) coupling, and as a chromophore extension to enable inversion of the alkene geometry via selective energy transfer catalysis. Mild isomerisation is a pre-condition to access 3-substituted coumarins and provides a handle for divergence. The method is showcased in the synthesis of representative natural products that contain this venerable chemotype. Facile entry into π-expanded estrone derivatives modified at the A-ring is disclosed to demonstrate the potential of the method in bioassay development or in drug repurposing.
Collapse
Affiliation(s)
- Max Wienhold
- Organisch Chemisches IntitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - John J. Molloy
- Organisch Chemisches IntitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Constantin G. Daniliuc
- Organisch Chemisches IntitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Ryan Gilmour
- Organisch Chemisches IntitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| |
Collapse
|
40
|
Sample HC, Senge MO. Nucleophilic Aromatic Substitution (S NAr) and Related Reactions of Porphyrinoids: Mechanistic and Regiochemical Aspects. European J Org Chem 2021; 2021:7-42. [PMID: 33519299 PMCID: PMC7821298 DOI: 10.1002/ejoc.202001183] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Indexed: 12/29/2022]
Abstract
The nucleophilic substitution of aromatic moieties (SNAr) has been known for over 150 years and found wide use for the functionalization of (hetero)aromatic systems. Currently, several "types" of SNAr reactions have been established and notably the area of porphyrinoid macrocycles has seen many uses thereof. Herein, we detail the SNAr reactions of seven types of porphyrinoids with differing number and type of pyrrole units: subporphyrins, norcorroles, corroles, porphyrins, azuliporphyrins, N-confused porphyrins, and phthalocyanines. For each we analyze the substitution dependent upon: a) the type of nucleophile and b) the site of substitution (α, β, or meso). Along with this we evaluate this route as a synthetic strategy for the generation of unsymmetrical porphyrinoids. Distinct trends can be identified for each type of porphyrinoid discussed, regardless of nucleophile. The use of nucleophilic substitution on porphyrinoids is found to often be a cost-effective procedure with the ability to yield complex substituent patterns, which can be conducted in non-anhydrous solvents with easily accessible simple porphyrinoids.
Collapse
Affiliation(s)
- Harry C. Sample
- School of ChemistryTrinity Biomedical Sciences InstituteThe University of Dublin152‐160 Pearse StreetDublin 2Ireland
| | - Mathias O. Senge
- Institute for Advanced Study (TUM‐IAS)Technical University of MunichLichtenbergstrasse 2a85748GarchingGermany
| |
Collapse
|
41
|
Salta J, Arp FF, Kühne C, Reissig H. Multivalent 1,2,3‐Triazole‐Linked Carbohydrate Mimetics by Huisgen–Meldal‐Sharpless Cycloadditions of an Azidopyran. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Joana Salta
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
| | - Fabian F. Arp
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
| | - Christian Kühne
- Institut für Laboratoriumsmedizin Klinische Chemie und Pathobiochemie Charité‐Universitätsmedizin Berlin Augustenburger Platz 1 13353 Berlin Germany
| | - Hans‐Ulrich Reissig
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
| |
Collapse
|
42
|
Utecht‐Jarzyńska G, Jasiński M, Würthwein E, Reissig H. The Cyclization of Allenyl‐Substituted Hydroxylamines to 1,2‐Oxazines: an Experimental and Computational Study. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001147] [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)
| | - Marcin Jasiński
- Faculty of Chemistry University of Łódź Tamka 12 91403 Łódź Poland
| | - Ernst‐Ulrich Würthwein
- Organisch‐Chemisches Institut and Center for Multiscale Theory and Computation (CMTC) Westfälische Wilhelms‐Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Hans‐Ulrich Reissig
- Institut für Chemie und Biochemie Freie Universität Berlin Takustrasse 3 14195 Berlin Germany
| |
Collapse
|
43
|
Sonnleitner CM, Park S, Eckl R, Ertl T, Reiser O. Stereoselective Synthesis of Tropanes via a 6π-Electrocyclic Ring-Opening/ Huisgen [3+2]-Cycloaddition Cascade of Monocyclopropanated Heterocycles. Angew Chem Int Ed Engl 2020; 59:18110-18115. [PMID: 32627302 PMCID: PMC7589232 DOI: 10.1002/anie.202006030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Indexed: 12/18/2022]
Abstract
The synthesis of tropanes via a microwave-assisted, stereoselective 6π-electrocyclic ring-opening/ Huisgen [3+2]-cycloaddition cascade of cyclopropanated pyrrole and furan derivatives with electron-deficient dipolarophiles is demonstrated. Starting from furans or pyrroles, 8-aza- and 8-oxabicyclo[3.2.1]octanes are accessible in two steps in dia- and enantioselective pure form, being versatile building blocks for the synthesis of pharmaceutically relevant targets, especially for new cocaine analogues bearing various substituents at the C-6/C-7 positions of the tropane ring system. Moreover, the 2-azabicyclo[2.2.2]octane core (isoquinuclidines), being prominently represented in many natural and pharmaceutical products, is accessible via this approach.
Collapse
Affiliation(s)
- Carina M. Sonnleitner
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 3193053RegensburgGermany
| | - Saerom Park
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 3193053RegensburgGermany
| | - Robert Eckl
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 3193053RegensburgGermany
| | - Thomas Ertl
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 3193053RegensburgGermany
| | - Oliver Reiser
- Institut für Organische ChemieUniversität RegensburgUniversitätsstrasse 3193053RegensburgGermany
| |
Collapse
|
44
|
Sonnleitner CM, Park S, Eckl R, Ertl T, Reiser O. Stereoselektive Synthese von Tropanen über eine 6π‐elektrocyclische Ringöffnung/ Huisgen‐[3+2]‐Cycloadditionskaskade von monocyclopropanierten Heterocyclen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Carina M. Sonnleitner
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Deutschland
| | - Saerom Park
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Deutschland
| | - Robert Eckl
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Deutschland
| | - Thomas Ertl
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Deutschland
| | - Oliver Reiser
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Deutschland
| |
Collapse
|