1
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Yuan M, Lou M, Li G, Qi X. Triflic Anhydride Promoted Decarboxylative Functionalization of α-Amino Acids. Org Lett 2024; 26:7382-7386. [PMID: 39177205 DOI: 10.1021/acs.orglett.4c02589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
The decarboxylation of naturally abundant amino acids, followed by subsequent inter- or intramolecular reaction cascades, enables the rapid synthesis of a variety of diverse and high-value amine derivatives. Previous methods have relied heavily on transition metals, involved tedious procedures, or required harsh conditions. Herein, we present a novel reaction cascade for the decarboxylation and nucleophilic functionalization of α-amino acids. This method is characterized by being transition-metal-free, convenient to operate, environmentally friendly and having mild conditions.
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Affiliation(s)
- Mingyue Yuan
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, People's Republic of China
- National Institute of Biological Sciences, Beijing 102206, People's Republic of China
| | - Mingliang Lou
- National Institute of Biological Sciences, Beijing 102206, People's Republic of China
| | - Gen Li
- National Institute of Biological Sciences, Beijing 102206, People's Republic of China
| | - Xiangbing Qi
- Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, People's Republic of China
- National Institute of Biological Sciences, Beijing 102206, People's Republic of China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 100084, People's Republic of China
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2
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Porras M, Hernández D, González CC, Boto A. “Cut and Paste” Processes in the Search of Bioactive Products: One-Pot, Metal-free O-Radical Scission-Oxidation-Addition of C, N or P-Nucleophiles. Front Chem 2022; 10:884124. [PMID: 35665068 PMCID: PMC9158125 DOI: 10.3389/fchem.2022.884124] [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: 02/25/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Hypervalent iodine reagents have been applied in many metal-free, efficient synthesis of natural products and other bioactive compounds. In particular, treatment of alcohols, acetals and acids with hypervalent iodine reagents and iodine results in O-radicals that can undergo a β-scission reaction. Under these oxidative conditions, derivatives of amino acids, peptides or carbohydrates are converted into cationic intermediates, which can subsequently undergo inter- or intramolecular addition of nucleophiles. Most reported papers describe the addition of oxygen nucleophiles, but this review is focused on the addition of carbon, nitrogen and phosphorous nucleophiles. The resulting products (nucleoside and alkaloid analogs, unnatural amino acids, site-selectively modified peptides) are valuable intermediates or analogs of bioactive compounds.
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3
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Robert EGL, Le Du E, Waser J. Synthesis of Polycyclic Aminal Heterocycles via Decarboxylative Cyclisation of Dipeptide Derivatives. Chem Commun (Camb) 2022; 58:3473-3476. [DOI: 10.1039/d2cc00167e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An oxidative-decarboxylative intramolecular cyclisation of dipeptide derivatives is reported. This transformation is promoted by phenyl iodine (III) diacetate (PIDA) in combination with BF3·OEt2. The reaction gives access to a variety...
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4
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Zeng Z, Feceu A, Sivendran N, Gooßen LJ. Decarboxylation‐Initiated Intermolecular Carbon‐Heteroatom Bond Formation. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100211] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhongyi Zeng
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Abigail Feceu
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Nardana Sivendran
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Lukas J. Gooßen
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Germany
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5
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Le Du E, Garreau M, Waser J. Small peptide diversification through photoredox-catalyzed oxidative C-terminal modification. Chem Sci 2021; 12:2467-2473. [PMID: 34164012 PMCID: PMC8179259 DOI: 10.1039/d0sc06180h] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 12/22/2020] [Indexed: 12/12/2022] Open
Abstract
A photoredox-catalyzed oxidative decarboxylative coupling of small peptides is reported, giving access to a variety of N,O-acetals. They were used as intermediates for the addition of phenols and indoles, leading to novel peptide scaffolds and bioconjugates. Amino acids with nucleophilic side chains, such as serine, threonine, tyrosine and tryptophan, could also be used as partners to access tri- and tetrapeptide derivatives with non-natural cross-linking.
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Affiliation(s)
- Eliott Le Du
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Lausanne CH-1015 Switzerland
| | - Marion Garreau
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Lausanne CH-1015 Switzerland
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Lausanne CH-1015 Switzerland
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6
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Rippel R, Pinheiro L, Lopes M, Lourenço A, Ferreira LM, Branco PS. Synthetic Approaches to a Challenging and Unusual Structure—An Amino-Pyrrolidine Guanine Core. Molecules 2020; 25:molecules25040797. [PMID: 32059504 PMCID: PMC7070370 DOI: 10.3390/molecules25040797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/07/2020] [Accepted: 02/10/2020] [Indexed: 11/22/2022] Open
Abstract
The synthesis of an unreported 2-aminopyrrolidine-1-carboxamidine unit is here described for the first time. This unusual and promising structure was attained through the oxidative decarboxylation of amino acids using the pair of reagents, silver(I)/peroxydisulfate (Ag(I)/S2O82−) followed by intermolecular (in the case of l-proline derivative) and intramolecular trapping (in the case of acyl l-arginine) by N-nucleophiles. The l-proline approach has a broader scope for the synthesis of 2-aminopyrrolidine-1-carboxamidine derivatives, whereas the intramolecular cyclization afforded by the l-acylarginines, when applied, results in higher yields. The former allowed the first synthesis of cernumidine, a natural alkaloid isolated in 2011 from Solanum cernuum Vell, as its racemic form.
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7
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Nanjo T, Kato N, Takemoto Y. Oxidative Decarboxylation Enables Chemoselective, Racemization-Free Esterification: Coupling of α-Ketoacids and Alcohols Mediated by Hypervalent Iodine(III). Org Lett 2018; 20:5766-5769. [PMID: 30168722 DOI: 10.1021/acs.orglett.8b02466] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An α-ketoacid could be converted into a reactive acylating agent by treatment with hypervalent iodine(III) species, and in so doing, we discovered a novel decarboxylative acylation of alcohols that affords a variety of esters in excellent yields. The esterification has been applied to a sterol bearing a free carboxylic acid and shows unique chemoselectivity. The procedure is racemization-free and operates under mild conditions.
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Affiliation(s)
- Takeshi Nanjo
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Natsuki Kato
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
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8
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Kiyokawa K, Okumatsu D, Minakata S. Hypervalent iodine(III)-mediated decarboxylative acetoxylation at tertiary and benzylic carbon centers. Beilstein J Org Chem 2018; 14:1046-1050. [PMID: 29977378 PMCID: PMC6009488 DOI: 10.3762/bjoc.14.92] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/27/2018] [Indexed: 01/20/2023] Open
Abstract
The decarboxylative acetoxylation of carboxylic acids using a combination of PhI(OAc)2 and I2 in a CH2Cl2/AcOH mixed solvent is reported. The reaction was successfully applied to two types of carboxylic acids containing an α-quaternary and a benzylic carbon center under mild reaction conditions. The resulting acetates were readily converted into the corresponding alcohols by hydrolysis.
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Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Daichi Okumatsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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9
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Zhou X, Wang P, Zhang L, Chen P, Ma M, Song N, Ren S, Li M. Transition-Metal-Free Synthesis of C-Glycosylated Phenanthridines via K 2S 2O 8-Mediated Oxidative Radical Decarboxylation of Uronic Acids. J Org Chem 2018; 83:588-603. [PMID: 29261315 DOI: 10.1021/acs.joc.7b02346] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We have developed an efficient protocol for the synthesis of C-glycosylated phenanthridines. Tetrafuranos-4-yl and pentapyranos-5-yl radicals, generated from K2S2O8-mediated oxidative decarboxylation of furan- and pyranuronic acids, undergo attack to 2-isocyanodiphenyls and ensuing homolytic aromatic substitution to provide diverse C-glycosylated phenanthridines in satisfactory yields without resort to transition metals. This reaction tolerates various functional groups, and enables ready synthesis of complex oligosaccharide-based phenanthridines. The C-glycosylated phenanthridine derived from β-cyclodextrin has been prepared, which might be potential in medicinal and biological chemistry due to its flexible conformation.
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Affiliation(s)
- Xin Zhou
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003, People's Republic of China
| | - Peng Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003, People's Republic of China
| | - Li Zhang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003, People's Republic of China
| | - Pengwei Chen
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003, People's Republic of China
| | - Mingxu Ma
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003, People's Republic of China
| | - Ni Song
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003, People's Republic of China
| | - Sumei Ren
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003, People's Republic of China
| | - Ming Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003, People's Republic of China.,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology , Qingdao 266237, People's Republic of China
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10
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Yuan Z, Zhao T, Yu T, Wang J, Wei H. Hypervalent Iodine(III)-Mediated Oxidative Decarboxylation of β-Keto Acids. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Zhipeng Yuan
- Shaanxi Key Laboratory of Natural Products & Chemical Biology; College of Sciences; Northwest A&F University; Yangling 712100 Shaanxi China
| | - Tiantian Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Department of Chemistry&Materials Science; Northwest University; Xi'an 710127 P. R. China
| | - Tianyang Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Department of Chemistry&Materials Science; Northwest University; Xi'an 710127 P. R. China
| | - Junru Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology; College of Sciences; Northwest A&F University; Yangling 712100 Shaanxi China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Department of Chemistry&Materials Science; Northwest University; Xi'an 710127 P. R. China
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11
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Yu K, Gao B, Liu Z, Ding H. Enantioselective total synthesis and structural reassignment of (+)-alsmaphorazine E via a traceless chirality transfer strategy. Chem Commun (Camb) 2016; 52:4485-8. [DOI: 10.1039/c6cc00930a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first enantioselective total synthesis of (+)-alsmaphorazine E was described, which led to the structural reassignment of the title molecule.
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Affiliation(s)
- Kuan Yu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310058
- P. R. China
| | - Beiling Gao
- Department of Chemistry
- Zhejiang University
- Hangzhou 310058
- P. R. China
| | - Zhaobo Liu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310058
- P. R. China
| | - Hanfeng Ding
- Department of Chemistry
- Zhejiang University
- Hangzhou 310058
- P. R. China
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12
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Kiyokawa K, Kojima T, Hishikawa Y, Minakata S. Iodine-Catalyzed Decarboxylative Amidation of β,γ-Unsaturated Carboxylic Acids with Chloramine Salts Leading to Allylic Amides. Chemistry 2015; 21:15548-52. [PMID: 26493878 DOI: 10.1002/chem.201503298] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Indexed: 01/05/2023]
Abstract
The iodine-catalyzed decarboxylative amidation of β,γ-unsaturated carboxylic acids with chloramine salts is described. This method enables the regioselective synthesis of allylic amides from various types of β,γ-unsaturated carboxylic acids containing substituents at the α- and β-positions. In the reaction, N-iodo-N-chloroamides, generated by the reaction of a chloramine salt with I2 , function as a key active species. The reaction provides an attractive alternative to existing methods for the synthesis of useful secondary allylic amine derivatives.
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Affiliation(s)
- Kensuke Kiyokawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871 (Japan)
| | - Takumi Kojima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871 (Japan)
| | - Yusuke Hishikawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871 (Japan)
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871 (Japan).
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13
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Xu K, Wang Z, Zhang J, Yu L, Tan J. Cobalt-Catalyzed Decarboxylative Acetoxylation of Amino Acids and Arylacetic Acids. Org Lett 2015; 17:4476-8. [DOI: 10.1021/acs.orglett.5b02142] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kun Xu
- College
of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061 P. R. China
| | - Zhiqiang Wang
- College
of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061 P. R. China
| | - Jinjin Zhang
- College
of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061 P. R. China
| | - Lintao Yu
- College
of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061 P. R. China
| | - Jiajing Tan
- Process
Chemistry, Merck Research Laboratories, P.O. Box 2000, Rahway, New
Jersey 07065, United States
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14
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Bortoluzzi M, Hayatifar M, Marchetti F, Pampaloni G, Zacchini S. Synthesis of α-amino acidato derivatives of niobium and tantalum pentahalides and their conversion into iminium salts. Inorg Chem 2015; 54:4047-55. [PMID: 25844933 DOI: 10.1021/acs.inorgchem.5b00286] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Dinuclear complexes of formula Nb2Cl9[O2CCH(R)NR'R″2-κO,κO] (R = CH2CHMe2, R' = R″ = H, 1a; R = CH2Ph, R' = R″ = H, 1b; R = CH2CH2SCH3, R' = R″ = H, 1c; R = R' = H, R″ = Me, 1d; R = CH2Ph, R' = R″ = Me, 1e; Nb2Cl9[O2C⌈CH(CH2)3NH⌉], 1f) were prepared by allowing NbCl5 to react in dichloromethane with the appropriate α-amino acid in 1:2 amino acid/Nb molar ratio. The 1:1 reactions between MX5 (M = Nb, Ta; X = Cl, Br) and a series of α-amino acids resulted in the formation of the iminium salts [(R)CH═NR'R″2][MX6] (R = CH2Ph, R' = R″ = Me: M = Nb, X = Cl, 2a; M = Nb, X = Br, 2b; M = Ta, X = Cl, 2c; M = Ta, X = Br, 2d; R = CH2Ph, R' = R″ = H, M = Nb: X = Cl, 3a; X = Br, 3b; R = CH2CHMe2, R' = R″ = H, M = Nb, X = Cl, 4; R = R' = H, R″ = Me, M = Nb, X = Cl, 5). The formate/amino acidate derivative NbCl3(O2CH)[O2CCH(CH2Ph)NMe2], 6, was isolated and identified as coproduct of the 1:1 reaction between NbCl5 and N,N-dimethyl-l-phenylalanine, leading to 2a. All of the compounds were characterized by analytical and spectroscopic methods and by X-ray diffractometry in the cases of 2a, 2b, and 2d. Moreover, density functional theory studies were carried out to shed light on mechanistic and structural aspects.
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Affiliation(s)
- Marco Bortoluzzi
- †Dipartimento di Scienze Molecolari e Nanosistemi, Ca' Foscari Università di Venezia, Dorsoduro 2137, 30123 Venezia, Italy
| | - Mohammad Hayatifar
- §Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Fabio Marchetti
- ‡Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 3, I-56124 Pisa, Italy
| | - Guido Pampaloni
- ‡Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 3, I-56124 Pisa, Italy
| | - Stefano Zacchini
- §Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy
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15
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Kiyokawa K, Yahata S, Kojima T, Minakata S. Hypervalent Iodine(III)-Mediated Oxidative Decarboxylation of β,γ-Unsaturated Carboxylic Acids. Org Lett 2014; 16:4646-9. [DOI: 10.1021/ol5022433] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kensuke Kiyokawa
- Department
of Applied Chemistry,
Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Shunsuke Yahata
- Department
of Applied Chemistry,
Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Takumi Kojima
- Department
of Applied Chemistry,
Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department
of Applied Chemistry,
Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
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16
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Jereb M, Vražič D, Zupan M. Iodine-catalyzed transformation of molecules containing oxygen functional groups. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.11.086] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Murai K, Morishita M, Nakatani R, Fujioka H, Kita Y. Oxidative decarboxylative synthesis of 2-H-imidazolines from glyoxylic acid and 1,2-diamines. Chem Commun (Camb) 2008:4498-500. [DOI: 10.1039/b807810f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Fan R, Li W, Wang B. A one-pot oxidative decarboxylation–Friedel-Crafts reaction of acyclic α-amino acid derivatives activated by the combination of iodobenzene diacetate/iodine and iron dust. Org Biomol Chem 2008; 6:4615-21. [DOI: 10.1039/b815227f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Iglesias-Arteaga MA, Arcos-Ramos RO, Méndez-Stivalet JM. The unexpected course of the reaction of steroid sapogenins with diacetoxyiodobenzene and BF3·Et2O in formic acid. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.08.071] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Iglesias-Arteaga MA, Velázquez-Huerta GA. Favorskii rearrangement of 23-oxo-3-epi-smilagenin acetate induced by iodosobenzene. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.08.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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23
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Synthesis of 9-Oxo-9,13b-dihydro-7H-benzo[3,4]azepino[2,1-a]isoindole-6-carboxylic Acid Derivatives from Baylis-Hillman Adducts. B KOREAN CHEM SOC 2005. [DOI: 10.5012/bkcs.2005.26.7.1112] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Boto A, Hernández R, de León Y, Murguía JR, Rodriguez-Afonso A. Synthesis of Functionalized Nitrogen Heterocycles by Radical Decarboxylation of β- and γ-Amino Acids. European J Org Chem 2005. [DOI: 10.1002/ejoc.200400698] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Maryanoff BE, Zhang HC, Cohen JH, Turchi IJ, Maryanoff CA. Cyclizations of N-acyliminium ions. Chem Rev 2004; 104:1431-628. [PMID: 15008627 DOI: 10.1021/cr0306182] [Citation(s) in RCA: 551] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bruce E Maryanoff
- Johnson & Johnson Pharmaceutical Research & Development, Spring House, Pennsylvania 19477-0776, USA.
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26
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Iglesias-Arteaga MA, Juaristi E, González FJ. An electrochemical interpretation of the mechanism of the chemical decarboxylation of 6-carboxyperhydropyrimidin-4-ones. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.02.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Chai CL, Elix JA, Huleatt PB. Multi-purpose functionality for the structural elaboration of the piperazine-2,5-dione motif. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(02)02571-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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28
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Aubele DL, Floreancig PE. Oxidative synthesis of cyclic acyl aminals through carbon-carbon sigma-bond activation. Org Lett 2002; 4:3443-6. [PMID: 12323039 DOI: 10.1021/ol026538m] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Acyliminium ions can be prepared through photoinitiated single-electron oxidation reactions of homobenzylic amides and carbamates. Cyclic acyl aminals are formed when these acyliminium ions are appended to nucleophiles such as hydroxyl, ether, and sulfonamide groups. The scope of these reactions is discussed along with mechanistic issues relating to the energetics, chemoselectivity, and stereoelectronic effects of bond activation. [reaction: see text]
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Affiliation(s)
- Danielle L Aubele
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
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29
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Dalla Croce P, La Rosa C. Stereoselective synthesis of (1R,4R)-N-acyl-2-oxa-5-aza-bicyclo[2.2.1]heptan-3-ones via mesoionic compounds. An improved synthesis of cis-4-hydroxy-d-proline. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00074-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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30
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Boto A, Hernández R, de León Y, Suárez E. Synthesis of 2,3-disubstituted pyrrolidines and piperidines via one-pot oxidative decarboxylation-beta-iodination of amino acids. J Org Chem 2001; 66:7796-803. [PMID: 11701038 DOI: 10.1021/jo015877a] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new synthesis of 2,3-disubstituted pyrrolidines and piperidines is described. This mild procedure is based on the one-pot oxidative decarboxylation-beta-iodination of alpha-amino acid carbamates or amides. The iodine is introduced at the previously unfunctionalized 3-position. Different substituents can be introduced at C-2, e.g., hydroxy, alkoxy, allyl, alkyl, etc. A trans relationship between the C-2 and C-3 substituents is exclusively obtained. The influence of the solvent and the ring size of the starting amino acid are studied, as well as the nature of the protecting group on the nitrogen. The stereoselectivity of the reaction was also studied using chiral methyl (2S,4S)-4-acetyloxyproline-1-carboxylate (8). The products obtained can be manipulated to give bicyclic systems present in many natural products. By using the tandem decarboxylation-iodination-alkylation reaction, 2-substituted-3-iodopyrrolidines are formed, which are precursors of 2-substituted-2,5-dihydropyrrols.
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Affiliation(s)
- A Boto
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Carretera de La Esperanza 3, 38206-La Laguna, Tenerife, Spain
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31
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Tandem radical decarboxylation-oxidation of amino acids: A mild and efficient method for the generation of N-acyliminium ions and their nucleophilic trapping. J Org Chem 2000; 65:4930-7. [PMID: 10956474 DOI: 10.1021/jo000356t] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A convenient methodology for the synthesis of 2-substituted pyrrolidines from alpha-amino acids is described. A number of cyclic and acyclic alpha-amino acid derivatives have been prepared in order to test the scope and diastereoselectivity of this method. These substrates were treated with iodosylbenzene or (diacetoxyiodo)benzene (DIB) and iodine in order to generate the corresponding carboxyl radical, which evolves by loss of carbon dioxide to produce a carbon radical which in turn undergoes oxidation to an N-acyliminium ion. This postulated intermediate could be trapped inter- or intramolecularly by oxygen, nitrogen and carbon nucleophiles. In the case of carbon nucleophiles, a Lewis acid is required for the concomitant carbon-carbon bond formation. High yields and modest diastereoselectivities were obtained. The present methodology was applied to the synthesis of omega-amino aldehydes or hemiaminals 8-14, 2-aminopyrrolidine derivative 15, aminolactone derivative 16, and azasugar analogues 17 and 18. When carbon nucleophiles were used, alkaloid precursors such as 2-allyl- or 2-alkylpyrrolidines 19-23 and 25 were obtained.
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32
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Boto A, Hernández R, Suárez E. Synthesis of alkaloids from amino acids via N-acyliminium ions generated by one-pot radical decarboxylation–oxidation. Tetrahedron Lett 2000. [DOI: 10.1016/s0040-4039(00)00306-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Tandem oxidative radical decarboxylation-β-iodination of amino acids. Application to the synthesis of chiral 2,3-disubstituted pyrrolidines. Tetrahedron Lett 2000. [DOI: 10.1016/s0040-4039(00)00188-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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