1
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Karan G, Sahu S, Metya A, Maji MS. Asymmetric 1,2-Migration at Vicinal Tetrasubstituted Stereocenters Constructed from α-Keto Imines. Angew Chem Int Ed Engl 2024:e202405212. [PMID: 38721919 DOI: 10.1002/anie.202405212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Indexed: 06/21/2024]
Abstract
A carbonyl-assisted asymmetric 1,2-migratory allylation through in situ generation of vicinal tetrasubstituted stereocenters is reported to access enantiopure α-amino ketones and amino alcohols with excellent yields and diastereoselectivities. In a remarkable divergence, despite higher steric hindrance, the allylation exclusively occurs on ketones over imines in the first step, followed by a face-selective 1,2-allyl transfer, thus highlighting an exciting interplay between two distinct electrophiles. The methodology distinguishes itself through its adaptability to gram-scale synthesis, showcasing broad functional-group tolerance and stereodivergence. Density functional theory (DFT) analysis led to a deeper understanding of its selectivity and mechanistic framework. Highlighting its transformative potential, the method was applied to the total synthesis of hapalindole alkaloids.
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Affiliation(s)
- Ganesh Karan
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Samrat Sahu
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Abhisek Metya
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
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2
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Yang R, Zhou Z, Jiang H, Kam TS, Chen K, Ma Z. Asymmetric Synthesis of Arboduridine. Angew Chem Int Ed Engl 2024; 63:e202316016. [PMID: 38038685 DOI: 10.1002/anie.202316016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/30/2023] [Accepted: 11/30/2023] [Indexed: 12/02/2023]
Abstract
The first asymmetric total synthesis of the monoterpenoid indole alkaloid arboduridine has been accomplished. The tricyclic A/B/D ring system was constructed by an enantioselective Michael reaction followed by intramolecular nucleophilic addition. Intramolecular α-amination of a ketone forged the piperidine ring, while a Horner-Wadsworth-Emmons (HWE) reaction was used to form the pyrrolidine ring. A reduction cyclization cascade led to formation of the tetrahydrofuran ring.
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Affiliation(s)
- Rui Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Zeyu Zhou
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, P. R. China
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen, Guangdong, 518055, P.R. China
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3
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Bai L, Wei JS, Zhong LY, Ma AQ, Wang J, Du ZQ, Xia AB, Xu DQ. Enantioselective α-Amination of Amides by One-Pot Organo-/Iodine Sequential Catalysis. Org Lett 2024; 26:258-263. [PMID: 38157251 DOI: 10.1021/acs.orglett.3c03925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
An one-pot organo- and iodine sequential catalysis strategy for reactions of amides with pyrazole-based primary amines was described to synthesize chiral α-amino amides with a quaternary stereocenter. This methodology exhibited strong asymmetric induction, resulting in a typical enantiomeric excess value exceeding 99% and diastereoselectivity up to >99:1 dr. Moreover, the reaction was conducted without the use of any metals or strong bases.
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Affiliation(s)
- Liang Bai
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jian-Sheng Wei
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Ling-Yi Zhong
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Ao-Qiang Ma
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jian Wang
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Zhi-Qiang Du
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Ai-Bao Xia
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China
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4
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Tian JS, Xu SW, Bi YH, Cao ZZ, Loh TP. Oxidative Amination of Aldehydes with Amines into α-Amino Ketones. Org Lett 2023. [PMID: 38057263 DOI: 10.1021/acs.orglett.3c03771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Oxidative amination for the installation of nitrogen functional molecules from nitrogen nucleophiles has always been a very challenging topic in organic synthesis. Here we report a novel conversion of different aldehydes with secondary amines for the synthesis of diversified α-amino ketones. This method can be achieved through oxidative rearrangement of an in situ-generated enamine intermediate promoted by commercially available sodium percarbonate. Furthermore, this one-pot process is also suitable for the functional modification of complex molecules.
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Affiliation(s)
- Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Shuang-Wen Xu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Yan-Hang Bi
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Zhan-Zhi Cao
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Teck-Peng Loh
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China
- School of Chemistry, Chemical Engineering and Biotechnology (CCEB), Nanyang Technological University, Singapore 637371
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5
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Donthoju A, Phanindrudu M, Ellandula S, Lal MR, Nanubolu JB, Chegondi R. Rh 2(II)-Catalyzed Selective C(sp 3)-H Bond Electrophilic Amination of Aryl Azide-Tethered 1,3-Dicarbonyl Compounds. Org Lett 2023; 25:7589-7594. [PMID: 37818903 DOI: 10.1021/acs.orglett.3c03067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Herein, we report the accomplishment of Rh2(II)-catalyzed intramolecular amination of aryl azide-tethered 1,3-dicarbonyls to access privileged heterocyclic scaffolds with exclusive diastereoselectivity under simple reaction conditions. This method also allows an unconventional direct α-amination at electron-deficient C(sp3)-H bonds of aryl azide-tethered 1,3-diketones to afford fused 2-azatricyclo[4.4.0.02,8]decanones and 2,2-disubstituted indolines, which are present in several biologically active alkaloids. Kinetic isotope experiments revealed that the nucleophilic addition of enol π-bonds on the transient electrophilic rhodium-nitrenoid intermediate enables C-N bond formation.
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Affiliation(s)
- Ashok Donthoju
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | | | | | | | | | - Rambabu Chegondi
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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6
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Feng M, Fernandes AJ, Sirvent A, Spinozzi E, Shaaban S, Maulide N. Transfer freier Aminogruppen via α-Aminierung von Carbonylen. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 135:e202304990. [PMID: 38516250 PMCID: PMC10952326 DOI: 10.1002/ange.202304990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Indexed: 03/23/2024]
Abstract
AbstractEine Strategie zur direkten α‐Aminierung unfunktionalisierter Carbonylverbindungen wird berichtet. Unter Verwendung einer kommerziell verfügbaren Stickstoffquelle zur Übertragung der freien Aminogruppe (NH2) werden primäre α‐Aminocarbonylverbindungen unter besonders milden Bedingungen hergestellt. Die direkte Einführung einer ungeschützten, primären Aminogruppe ermöglicht in der Folge zahlreiche in situ Funktionalisierungen der erhaltenen Reaktionsprodukte, einschließlich Peptidkupplungen und Pictet–Spengler Cyclisierungen.
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Affiliation(s)
- Minghao Feng
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
| | - Anthony J. Fernandes
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
- Christian-Doppler Labor für Entropieorientiertes Drug DesignJosef-Holaubek-Platz 21090WienÖsterreich
| | - Ana Sirvent
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
- Christian-Doppler Labor für Entropieorientiertes Drug DesignJosef-Holaubek-Platz 21090WienÖsterreich
| | - Eleonora Spinozzi
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
| | - Saad Shaaban
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
| | - Nuno Maulide
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
- Christian-Doppler Labor für Entropieorientiertes Drug DesignJosef-Holaubek-Platz 21090WienÖsterreich
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7
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Feng M, Fernandes AJ, Sirvent A, Spinozzi E, Shaaban S, Maulide N. Free Amino Group Transfer via α-Amination of Native Carbonyls. Angew Chem Int Ed Engl 2023; 62:e202304990. [PMID: 37114555 PMCID: PMC10952782 DOI: 10.1002/anie.202304990] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 04/26/2023] [Accepted: 04/28/2023] [Indexed: 04/29/2023]
Abstract
We report herein a straightforward transfer of a free amino group (NH2 ) from a commercially available nitrogen source to unfunctionalized, native carbonyls (amides and ketones) resulting in direct α-amination. Primary α-amino carbonyls are readily produced under mild conditions, further enabling diverse in situ functionalization reactions-including peptide coupling and Pictet-Spengler cyclization-that capitalize on the presence of the unprotected primary amine.
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Affiliation(s)
- Minghao Feng
- Institute of Organic ChemistryUniversity of ViennaWähringer Straße 381090ViennaAustria
| | - Anthony J. Fernandes
- Institute of Organic ChemistryUniversity of ViennaWähringer Straße 381090ViennaAustria
- Christian-Doppler Laboratory for Entropy-Oriented Drug DesignJosef-Holaubek-Platz 21090ViennaAustria
| | - Ana Sirvent
- Institute of Organic ChemistryUniversity of ViennaWähringer Straße 381090ViennaAustria
- Christian-Doppler Laboratory for Entropy-Oriented Drug DesignJosef-Holaubek-Platz 21090ViennaAustria
| | - Eleonora Spinozzi
- Institute of Organic ChemistryUniversity of ViennaWähringer Straße 381090ViennaAustria
| | - Saad Shaaban
- Institute of Organic ChemistryUniversity of ViennaWähringer Straße 381090ViennaAustria
| | - Nuno Maulide
- Institute of Organic ChemistryUniversity of ViennaWähringer Straße 381090ViennaAustria
- Christian-Doppler Laboratory for Entropy-Oriented Drug DesignJosef-Holaubek-Platz 21090ViennaAustria
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8
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Makino K, Kumagai Y, Yoshino T, Kojima M, Matsunaga S. Catalytic Enantioselective Amination of Enol Silyl Ethers Using a Chiral Paddle-Wheel Diruthenium Complex. Org Lett 2023; 25:3234-3238. [PMID: 37140361 DOI: 10.1021/acs.orglett.3c00940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A chiral paddle-wheel dinuclear ruthenium catalyst was applied to a catalytic asymmetric nitrene-transfer reaction with enol silyl ethers. The ruthenium catalyst was applicable to aliphatic enol silyl ethers as well as aryl-containing enol silyl ethers. The substrate scope of the ruthenium catalyst was superior to that of analogous chiral paddle-wheel rhodium catalysts. α-Amino ketones derived from aliphatic substrates were obtained in up to 97% ee with the ruthenium catalyst, while analogous rhodium catalysts resulted in only moderate enantioselectivity.
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Affiliation(s)
- Kotoko Makino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Yuhei Kumagai
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan
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9
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Okumatsu D, Kawanaka K, Kainuma S, Kiyokawa K, Minakata S. α-Amination of Carbonyl Compounds by Using Hypervalent Iodine-Based Aminating Reagents Containing a Transferable (Diarylmethylene)amino Group. Chemistry 2023; 29:e202203722. [PMID: 36604401 DOI: 10.1002/chem.202203722] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 01/07/2023]
Abstract
Hypervalent iodine-based aminating reagents containing a transferable (diarylmethylene)amino group can be used for the α-amination of simple carbonyl compounds such as esters, amides, and ketones in the presence of a lithium base. The (diarylmethylene)amino groups of the products can be readily modified, thus providing access to primary amines and diarylmethylamines. The developed method features transition-metal-free conditions and a simple one-pot procedure without the need to prepare enolate equivalents separately, thus offering a general and practical approach to the synthesis of a wide variety of α-amino carbonyl compounds. Experimental mechanistic investigations indicate that this amination proceeds through a unique radical coupling of an α-carbonyl radical with an iminyl radical; they are generated through a single-electron transfer between a lithium enolate and the hypervalent iodine reagent.
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Affiliation(s)
- Daichi Okumatsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Kazuki Kawanaka
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Shunpei Kainuma
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - Kensuke Kiyokawa
- 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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10
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Zhou Y, Yue X, Jiang F, Sun J, Guo W. Catalytic asymmetric synthesis of α-tertiary aminoketones from sulfoxonium ylides bearing two aryl groups. Chem Commun (Camb) 2023; 59:1193-1196. [PMID: 36629287 DOI: 10.1039/d2cc06147c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Disclosed herein is an efficient organocatalytic formal N-H insertion reaction of arylamines with α-keto sulfoxonium ylides bearing two aryl groups, delivering a broad range of α-tertiary aminoketones with good to excellent yields and enantioselectivities (up to 90% yield and 94% ee). The utilities of this protocol were also demonstrated by facile preparation of enantioenriched 2-amino-1,2-diarylethanol bearing two different aryl groups, a type of important building block lacking efficient access.
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Affiliation(s)
- Ying Zhou
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Xin Yue
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Feng Jiang
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
| | - Jianwei Sun
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Wengang Guo
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
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11
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Cao J, Su YX, Zhang XY, Zhu SF. Highly Enantioselective Brønsted Acid Catalyzed Heyns Rearrangement. Angew Chem Int Ed Engl 2023; 62:e202212976. [PMID: 36316277 DOI: 10.1002/anie.202212976] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Indexed: 12/05/2022]
Abstract
Herein we report the first method for highly enantioselective Brønsted acid catalyzed Heyns rearrangements. These reactions, catalyzed by a chiral spiro phosphoric acid, afforded synthetically valuable chiral α-aryl-α-aminoketones which cannot be obtained by means of previously reported Heyns rearrangement methods. This method features low catalyst loadings, high yields and high enantioselectivities, making these reactions highly practical. We used the method to efficiently synthesize various chiral amines, including some biologically active molecules. We experimentally proved that these acid-catalyzed Heyns rearrangements proceeded via a proton-transfer process involving an enol intermediate and the stereocontrol was realized during the proton-transfer step.
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Affiliation(s)
- Jin Cao
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Yu-Xuan Su
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Xin-Yu Zhang
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China
| | - Shou-Fei Zhu
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 300071, Tianjin, China.,Haihe Laboratory of Sustainable Chemical Transformations, 300192, Tianjin, China
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12
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Zhou M, Lu H, Wang Z, Kato T, Liu Y, Maruoka K. Synthesis of 1,3‑dicarbonyl compounds bearing hetero-substituted α-quaternary carbon via Fe(II)-catalyzed alkylation with alkylsilyl peroxides. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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13
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Rezayee NM, Lamhauge JN, Jørgensen KA. Organocatalyzed Cross-Nucleophile Couplings: Umpolung of Catalytic Enamines. Acc Chem Res 2022; 55:1703-1717. [PMID: 35652370 DOI: 10.1021/acs.accounts.2c00149] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
ConspectusThe concept of umpolung, or polarity reversal, introduced by Seebach and Corey nearly half a century ago, ushered a new paradigm into synthetic chemistry. Novel connections were able to be forged among functional groups that were typically inaccessible. Conceptually, an umpolung reaction is identified only upon retrosynthetic analysis. Stoichiometric examples have served as a platform to develop and refine elegant methodologies into catalytic processes. The advent of these unconventional arrangements of canonical synthons into new points of diversity has expanded the repertoire of the synthetic toolbox. Within this context, asymmetric organocatalyzed methodologies remain rare, and there are even fewer aminocatalyzed variants.Recent years have witnessed a renaissance in α-functionalizations of aldehydes, specifically in the context of oxidative umpolung strategies. Unlike previous open-shell approaches, application of a quinone-based oxidant in conjunction with an aminocatalyst leads to a discrete, substitutionally labile quinone adduct. These have proven to be valuable building blocks toward polar reactivity─auguring the advent of new avenues to construct tetrasubstituted tertiary stereocenters through the application of conventional nucleophiles to form C-C, C-N, C-O, and C-S bonds through an organocatalyzed cross-nucleophile coupling (organo-CNC) reaction. The resulting nonepimerizable stereocenter demonstrates high optical fidelity and provides a significant advancement in many applications that suffer from racemization, such as in vivo studies.This strategy harnesses a trifunctional aminocatalyst to promote an unusual SN2 reaction at a highly congested center. The selection of the quinone oxidant and nucleophile converges to a continuum of reactivity ranging from enantioselective oxidation to stereoselective substitution. A remarkable aspect of these developments is the identification of an asymmetric SN2 dynamic kinetic resolution (SN2-DKR) manifold. These organo-CNC reactions are highly modular and demonstrate complete stereocontrol from the catalyst with minimal influence from incoming chiral nucleophiles. Leveraging this facet, these technologies have been extended to peptidic bioconjugations bearing bio-orthogonoal linker molecules.This Account aims to highlight the progress, from an internal perspective, toward directing the initial result into established methodologies. Within this construct, the underlying principles of each reaction will be disseminated with specific content on inherent challenges and opportunity. Combined, these will serve as an instructive tool to stimulate applications in cross-disciplinary interfaces.
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Affiliation(s)
- Nomaan M. Rezayee
- Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - Johannes N. Lamhauge
- Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - Karl Anker Jørgensen
- Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
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14
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Zhang Q, Liang Y, Li R, Huang Z, Kong L, Du P, Peng B. Sulfur(iv)-mediated umpolung α-heterofunctionalization of 2-oxazolines. Chem Sci 2022; 13:5164-5170. [PMID: 35655558 PMCID: PMC9093176 DOI: 10.1039/d2sc00476c] [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: 01/25/2022] [Accepted: 04/08/2022] [Indexed: 11/21/2022] Open
Abstract
The α-umpolung of carbonyl compounds significantly expands the boundaries of traditional carbonyl chemistry. Despite various umpolung methods available today, reversing the inherent reactivity of carbonyls still remains a substantial challenge. In this article, we report the first use of sulfonium salts, in lieu of well-established hypervalent iodines, for the carbonyl umpolung event. The protocol enables the incorporation of a wide variety of heteroatom nucleophiles into the α-carbon of 2-oxazolines. The success of this investigation hinges on the following factors: (1) the use of sulfoxides, which are abundant, structurally diverse and tunable, and easily accessible, ensures the identification of a superior oxidant namely phenoxathiin sulfoxide for the umpolung reaction; (2) the "assembly/deprotonation" protocol previously developed for rearrangement reactions in our laboratory was successfully applied here for the construction of α-umpoled 2-oxazolines.
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Affiliation(s)
- Qifeng Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Yuchen Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Ruiqi Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Ziyi Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Peng Du
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
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15
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Hwang Y, Baek SB, Kim D, Chang S. Chain Walking as a Strategy for Iridium-Catalyzed Migratory Amidation of Alkenyl Alcohols to Access α-Amino Ketones. J Am Chem Soc 2022; 144:4277-4285. [PMID: 35200026 DOI: 10.1021/jacs.2c00948] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Catalytic carbon-nitrogen bond formation in hydrocarbons is an appealing synthetic tool to access valuable nitrogen-containing compounds. Although a number of synthetic approaches have been developed to construct a bifunctional α-amino carbonyl scaffold in this realm, installation of an amino functionality at the remote and unfunctionalized aliphatic sites remains underdeveloped. Here we present a tandem iridium catalysis that enables the redox-relay amidation of alkenyl alcohols via chain walking and metal-nitrenoid transfer, which eventually offers a new route to various α-amino ketones with excellent regioselectivity. The virtue of this transformation is that an unrefined isomeric mixture of alkenyl alcohols can be utilized as the readily available starting materials to lead to the regioconvergent amidation. Mechanistic investigations revealed that the reaction proceeds via a tandem process involving two key components of redox-relay chain walking and intermolecular nitrenoid transfer with the assistance of hydrogen bonding, thus representing the competence of Ir catalysis for the olefin migratory C-N coupling with high efficiency and exquisite selectivity.
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Affiliation(s)
- Yeongyu Hwang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Seung Beom Baek
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
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16
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Wang D, Zhang W, Lu X, Zhou H, Zhong F. Cinchona Alkaloid Derived Iodide Catalyzed Enantioselective Oxidative α-Amination of Carbonyl Compounds toward the Construction of Spiroindolyloxindole. Org Lett 2022; 24:842-847. [PMID: 35025513 DOI: 10.1021/acs.orglett.1c04118] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Novel cinchona alkaloid derived iodide catalysts were developed for the enantioselective oxidative α-amination of 2-oxindoles, providing various functionalized spiropyrrolidine oxindoles in high yields and with good enantioselectivities. This iodide/ROOH catalytic system features a one-step synthesis of a catalyst with multiple functionalities, ease of operation, and good scalability, thereby enriching the repertoire of iodide catalysis for enantioselective oxidative coupling reactions.
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Affiliation(s)
- Dangui Wang
- School of Pharmacy, Weifang Medical University, Weifang 261053, People's Republic of China.,Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, People's Republic of China
| | - Wentao Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, People's Republic of China
| | - Xunbo Lu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, People's Republic of China
| | - Hongwei Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, People's Republic of China
| | - Fangrui Zhong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, People's Republic of China
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17
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He L, Liang C, Ouyang Y, Li L, Guo Y, Zhang P, Li W. α-Functionalization of ketones promoted by sunlight and heterogeneous catalysis in the aqueous phase. Org Biomol Chem 2022; 20:790-795. [PMID: 34994749 DOI: 10.1039/d1ob02249k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Herein, a protocol that combines heterogeneous catalysis and solar photocatalysis for the regioselective α-substitution of asymmetric ketones with quinoxalinones has been reported. The result indicates that the reaction is more likely to occur on the α-carbon. This strategy provides a green and efficient way for the α-functionalization of ketones. A singlet oxygen involved mechanism is suggested for the transformation.
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Affiliation(s)
- Lei He
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Chenfeng Liang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Yani Ouyang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Lin Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Yirui Guo
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Pengfei Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Wanmei Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, China.
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18
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Wen W, Ai ZP, Yang CL, Li CX, Wu ZL, Cai T, Guo QX. Enantioselective synthesis of α-amino ketones through palladium-catalyzed asymmetric arylation of α-keto imines. Chem Sci 2022; 13:3796-3802. [PMID: 35432891 PMCID: PMC8966749 DOI: 10.1039/d2sc00386d] [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: 01/20/2022] [Accepted: 03/06/2022] [Indexed: 11/23/2022] Open
Abstract
Chiral α-amino ketones are common structural motifs in natural products and pharmaceuticals, as well as important synthons in organic synthesis. Thus, establishing efficient methods for preparing compounds with these privileged scaffolds is an important endeavor in synthetic chemistry. Herein we disclose a new catalytic asymmetric approach for the synthesis of chiral α-amino ketones through a chiral palladium-catalyzed arylation reaction of in situ generated challenging α-keto imines from previously unreported C-acyl N-sulfonyl-N,O-aminals, with arylboronic acids. The current reaction offers a straightforward approach to the asymmetric synthesis of acyclic α-amino ketones in a practical and highly stereocontrolled manner. Meanwhile, the multiple roles of the chiral Pd(ii) complex catalyst in the reaction were also reported. Chiral α-amino ketones are common structural motifs in natural products and pharmaceuticals, as well as important synthons in organic synthesis.![]()
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Affiliation(s)
- Wei Wen
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Zhao-Pin Ai
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Chang-Lin Yang
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Chao-Xing Li
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Zhu-Lian Wu
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Tian Cai
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Qi-Xiang Guo
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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19
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Nguyen NH, Oh SM, Park CM, Shin S. Ortho-selective C–H arylation of phenols with N-carboxyindoles under Brønsted acid- or Cu(i)-catalysis. Chem Sci 2022; 13:1169-1176. [PMID: 35211284 PMCID: PMC8790926 DOI: 10.1039/d1sc06157g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 12/26/2021] [Indexed: 01/25/2023] Open
Abstract
Control over chemo- and regioselectivity is a critical issue in the heterobiaryl synthesis via C–H oxidative coupling. To address this challenge, a strategy to invert the normal polarity of indoles in the heterobiaryl coupling was developed. With N-carboxyindoles as umpoled indoles, an exclusively ortho-selective coupling with phenols has been realized, employing a Brønsted acid- or Cu(i)-catalyst (as low as 0.01 mol%). A range of phenols and N-carboxyindoles coupled with exceptional efficiency and selectivity at ambient temperature and the substrates bearing redox-active aryl halides (–Br and –I) smoothly coupled in an orthogonal manner. Notably, preliminary examples of atropselective heterobiaryl coupling have been demonstrated, based on a chiral disulfonimide or a Cu(i)/chiral bisphosphine catalytic system. The reaction was proposed to occur through SN2′ substitution or a Cu(i)–Cu(iii) cycle, with Brønsted acid or Cu(i) catalysts, respectively. Control over chemo- and regioselectivity is a critical issue in the heterobiaryl synthesis via C–H oxidative coupling. To address this challenge, a strategy to invert the normal polarity of indoles was developed.![]()
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Affiliation(s)
- Nguyen H. Nguyen
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS), Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Soo Min Oh
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS), Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Cheol-Min Park
- Department of Chemistry, UNIST (Ulsan National Institute of Science and Technology), Ulsan 44919, Korea
| | - Seunghoon Shin
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS), Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
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20
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Pandey CB, Mishra BK, Azaz T, Mourya H, Ram B, Tiwari B. A General Method for α-Oxyacylation of Vinyl Ketones Using Koser's Reagent. J Org Chem 2021; 86:17318-17327. [PMID: 34783551 DOI: 10.1021/acs.joc.1c01517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A direct general method for the preparation of α-oxyacylated vinyl ketones using Koser's hypervalent iodine reagent is reported. A variety of acyloxy groups from long-chain aliphatic, aromatic, α,β-unsaturated carboxylic acids have been installed efficiently for the first time. The oxyacylated adducts were used for the preparation of densely functionalized chiral δ-lactones and cyclopentenes using carbene organocatalysis.
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Affiliation(s)
- Chandra Bhan Pandey
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Bal Krishna Mishra
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Tazeen Azaz
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Hemlata Mourya
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Bali Ram
- Department of Chemistry Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Bhoopendra Tiwari
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
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21
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Wang C, Pang Y, Wu Y, Zhang N, Yang R, Li Y, Chen P, Jiang H, Xu X, Kam T, Fan T, Ma Z. Divergent Synthesis of Skeletally Distinct Arboridinine and Arborisidine. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Cheng Wang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Yubing Pang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Yuecheng Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Nanping Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Rui Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Ying Li
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 P. R. China
| | - Pengquan Chen
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Xue‐Tao Xu
- School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 P. R. China
| | - Toh‐Seok Kam
- Department of Chemistry Faculty of Science University of Malaya 50603 Kuala Lumpur Malaysia
| | - Ting Fan
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry & Chemical Engineering South China University of Technology Wushan Road-381 Guangzhou 510641 China
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22
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Wang C, Pang Y, Wu Y, Zhang N, Yang R, Li Y, Chen P, Jiang H, Xu XT, Kam TS, Fan T, Ma Z. Divergent Synthesis of Skeletally Distinct Arboridinine and Arborisidine. Angew Chem Int Ed Engl 2021; 60:26978-26985. [PMID: 34665909 DOI: 10.1002/anie.202110149] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Indexed: 01/10/2023]
Abstract
A divergent synthesis of skeletally distinct arboridinine and arborisidine was achieved. The central divergent strategy was inspired by the divergent biosynthetic cyclization mode of arboridinine and arborisidine and their hidden topological connection. The branch point was reached through a Michael and Mannich cascade process. A site-selective intramolecular Mannich reaction was developed to construct the tetracyclic core of arboridinine, while a site-selective intramolecular α-amination of ketone was used to access the tetracyclic core of arborisidine. A strategic Peterson olefination through intramolecular nucleophile delivery was able to set up the exocyclic olefin of arboridinine.
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Affiliation(s)
- Cheng Wang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Yubing Pang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Yuecheng Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Nanping Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Rui Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Ying Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, P. R. China
| | - Pengquan Chen
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Xue-Tao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, P. R. China
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Ting Fan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road-381, Guangzhou, 510641, China
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23
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Rezayee NM, Rusbjerg M, Marx M, Linde ST, Jørgensen KA. Metal-free, Oxidative α-Coupling of Aldehydes with Amine Nucleophiles for the Preparation of Congested C(sp 3)-N Bonds. J Org Chem 2021; 87:1756-1766. [PMID: 34610236 DOI: 10.1021/acs.joc.1c01937] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This article discloses the direct α-amination of α-branched aldehydes applying nitrogen-based nucleophiles. Under organocatalyzed, oxidative conditions α-branched aldehydes are umpoled to their electrophilic synthons and, subsequently, displaced by a variety of nucleophilic amines to form tetrasubstituted tertiary centers. A similar strategy has been previously employed to form congested C-C, C-O, and C-S bonds; however, unsatisfactory results were received when extending the methodology to include C-N bonds. Initially, intramolecular α-amination reactions were undertaken to foster dihydroquinoxaline-type products. A solvent exchange to the polar, aprotic solvent, MeNO2, proved critical to facilitate intermolecular α-C-N bond formation with a wide range of amine coupling partners (N-heterocycles, N,N-diaryl amines, and anilines). Application of the solvent exchange to the enantioselective SN2-DKR manifold provided distinct regimes leading to refinement in yield and enantioselectivity.
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Affiliation(s)
- Nomaan M Rezayee
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Matilde Rusbjerg
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Maximilian Marx
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Sif T Linde
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
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24
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Zhou C, Lv J, Xu W, Lu H, Kato T, Liu Y, Maruoka K. Highly Selective Monoalkylation of Active Methylene and Related Derivatives using Alkylsilyl Peroxides by a Catalytic CuI‐DMAP System. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100440] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Canhua Zhou
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Jiamin Lv
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Weiping Xu
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Hanbin Lu
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Terumasa Kato
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangdong University of Technology Guangzhou 510006 P. R. China
- Graduate School of Pharmaceutical Sciences Kyoto University Sakyo Kyoto 606-8501 Japan
| | - Yan Liu
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Keiji Maruoka
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangdong University of Technology Guangzhou 510006 P. R. China
- Graduate School of Pharmaceutical Sciences Kyoto University Sakyo Kyoto 606-8501 Japan
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25
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Kumar R, Nguyen QH, Um TW, Shin S. Recent Progress in Enolonium Chemistry under Metal-Free Conditions. CHEM REC 2021; 22:e202100172. [PMID: 34418282 DOI: 10.1002/tcr.202100172] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 11/09/2022]
Abstract
Umpolung approach through inversion of the polarity of conventional enolates, has opened up an unprecedented opportunity in the cross-coupling via alkylation. The enolonium equivalents can be accessed either by hypervalent iodine reagents, activation/oxidation of amides, or the oxidation of alkynes. Under umpolung conditions, highly basic conditions required for classical enolate chemistry can be avoided, and they can couple with unmodified nucleophiles such as heteroatom donors and electron-rich arenes.
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Quynh H Nguyen
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Tae-Woong Um
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
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26
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Zhao H, Hu B, Xu L, Walsh PJ. Palladium-catalyzed benzylic C(sp 3)-H carbonylative arylation of azaarylmethyl amines with aryl bromides. Chem Sci 2021; 12:10862-10870. [PMID: 34476065 PMCID: PMC8372623 DOI: 10.1039/d1sc02078a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/06/2021] [Indexed: 01/08/2023] Open
Abstract
A highly selective palladium-catalyzed carbonylative arylation of weakly acidic benzylic C(sp3)-H bonds of azaarylmethylamines with aryl bromides under 1 atm of CO gas has been achieved. This work represents the first examples of use of such weakly acidic pronucleophiles in this class of transformations. In the presence of a NIXANTPHOS-based palladium catalyst, this one-pot cascade process allows a range of azaarylmethylamines containing pyridyl, quinolinyl and pyrimidyl moieties and acyclic and cyclic amines to undergo efficient reactions with aryl bromides and CO to provide α-amino aryl-azaarylmethyl ketones in moderate to high yields with a broad substrate scope and good tolerance of functional groups. This reaction proceeds via in situ reversible deprotonation of the benzylic C-H bonds to give the active carbanions, thereby avoiding prefunctionalized organometallic reagents and generation of additional waste. Importantly, the operational simplicity, scalability and diversity of the products highlight the potential applicability of this protocol.
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Affiliation(s)
- Haoqiang Zhao
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Bowen Hu
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Lijin Xu
- Department of Chemistry, Renmin University of China Beijing 100872 China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
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27
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Chen R, Jia RL, Li W, Zhao W, Wang KK, Wang ZY, Ma X, Dai W, Sun A. A copper iodide-catalyzed coupling reaction of benzofuran-3(2H)-ones with amines: an approach to α-ketoamides. Org Biomol Chem 2021; 19:5294-5297. [PMID: 34085691 DOI: 10.1039/d1ob00715g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A CuI-catalyzed coupling reaction of benzofuran-3(2H)-ones with amines has been well established for the direct synthesis of α-ketoamides. This process involves C-O bond cleavage and C[double bond, length as m-dash]O/C-N bond formation. Mechanism studies indicated that this α-ketoamide formation reaction may involve a free radical process.
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Affiliation(s)
- Rongxiang Chen
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Ruo-Ling Jia
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Wenbo Li
- School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453000, P.R. of China
| | - Wei Zhao
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Kai-Kai Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Zhan-Yong Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Xueji Ma
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Wei Dai
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Aili Sun
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
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28
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Guo W, Zuo L, Cui M, Yan B, Ni S. Propargylic Amination Enabled the Access to Enantioenriched Acyclic α-Quaternary α-Amino Ketones. J Am Chem Soc 2021; 143:7629-7634. [PMID: 33988363 DOI: 10.1021/jacs.1c03182] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A propargylic amination approach toward chiral acyclic α-quaternary α-amino ketones is described. This Cu-catalyzed procedure could be performed open to air using commercially available amines as nucleophiles. The key to success is the use of rationally designed propargylic cyclic carbonates as substrates, which can generate a Cu-bonded enolate zwitterionic intermediate upon decarboxylation. This protocol features wide functional group tolerance and high asymmetric induction, with typical ee value higher than 93%, and thus advances a great step forward in the challenging synthesis of acyclic chiral α-quaternary α-amino ketones.
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Affiliation(s)
- Wusheng Guo
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Yanxiang Road 99, Xi'an 710045, China
| | - Linhong Zuo
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Yanxiang Road 99, Xi'an 710045, China
| | - Manying Cui
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Yanxiang Road 99, Xi'an 710045, China
| | - Biwei Yan
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Yanxiang Road 99, Xi'an 710045, China
| | - Shaofei Ni
- Department of Chemistry, Shantou University, Shantou 515063, China
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29
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Fu X, Hao Y, Bai HY, Duan A, Zhang SY. Co-Catalyzed Direct Regio- and Enantioselective Intermolecular γ-Amination of N-Acylpyrazoles. Org Lett 2020; 23:25-30. [DOI: 10.1021/acs.orglett.0c03522] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xin Fu
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
- College of Environmental Science & Technology, Hunan University, Changsha 410082, China
| | - Yu Hao
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
| | - He-Yuan Bai
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Abing Duan
- College of Environmental Science & Technology, Hunan University, Changsha 410082, China
| | - Shu-Yu Zhang
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
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30
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Kumar J, Suresh E, Bhadra S. Catalytic Direct α-Amination of Arylacetic Acid Synthons with Anilines. J Org Chem 2020; 85:13363-13374. [PMID: 32998508 DOI: 10.1021/acs.joc.0c02122] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A unique α-amination approach using various anilines has been developed for arylacetic acids via adaptation as benzazoles. The reaction proceeds through a single electron transfer mechanism utilizing an iron-based catalyst system to access α-(N-arylamino)acetic acid equivalents. Modification of approved drugs, facile cleavage of the benzazole auxiliary, and tolerance of amide linkage forming conditions constitute the potential applicability of this strategy.
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Affiliation(s)
- Jogendra Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Eringathodi Suresh
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sukalyan Bhadra
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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31
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Rhodium-catalyzed [4+1] annulation of sulfoxonium ylides: Sequential ortho-C H functionalization/carbonyl α-amination toward polycyclic quinazolinones. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152441] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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32
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Jarret M, Tap A, Turpin V, Denizot N, Kouklovsky C, Poupon E, Evanno L, Vincent G. Bioinspired Divergent Oxidative Cyclizations of Geissoschizine: Total Synthesis of (–)‐17‐nor‐Excelsinidine, (+)‐16‐
epi
‐Pleiocarpamine, (+)‐16‐Hydroxymethyl‐Pleiocarpamine and (+)‐Taberdivarine H. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000962] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Maxime Jarret
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
| | - Aurélien Tap
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
| | - Victor Turpin
- Biomolécules: Conception, Isolement et Synthèse (BioCIS) Université Paris‐Saclay, CNRS, BioCIS 92290 Châtenay‐Malabry France
| | - Natacha Denizot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
| | - Erwan Poupon
- Biomolécules: Conception, Isolement et Synthèse (BioCIS) Université Paris‐Saclay, CNRS, BioCIS 92290 Châtenay‐Malabry France
| | - Laurent Evanno
- Biomolécules: Conception, Isolement et Synthèse (BioCIS) Université Paris‐Saclay, CNRS, BioCIS 92290 Châtenay‐Malabry France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) Université Paris‐Saclay, CNRS 91405 Orsay France
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33
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Guo W, Luo Y, Sung HHY, Williams ID, Li P, Sun J. Chiral Phosphoric Acid Catalyzed Enantioselective Synthesis of α-Tertiary Amino Ketones from Sulfonium Ylides. J Am Chem Soc 2020; 142:14384-14390. [DOI: 10.1021/jacs.0c07210] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Wengang Guo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, SAR China
| | - Yuzheng Luo
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Herman H.-Y. Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, SAR China
| | - Ian D. Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, SAR China
| | - Pingfan Li
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, SAR China
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34
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Lee M, Jung H, Kim D, Park JW, Chang S. Modular Tuning of Electrophilic Reactivity of Iridium Nitrenoids for the Intermolecular Selective α-Amidation of β-Keto Esters. J Am Chem Soc 2020; 142:11999-12004. [DOI: 10.1021/jacs.0c04344] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Minhan Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Hoimin Jung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Jung-Woo Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
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35
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Rong Z, Hu W, Dai N, Qian G. A Hg(OTf)2-Catalyzed Enolate Umpolung Reaction Enables the Synthesis of Coumaran-3-ones and Indolin-3-ones. Org Lett 2020; 22:3286-3290. [DOI: 10.1021/acs.orglett.0c01096] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhouting Rong
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People’s Republic of China
| | - Weican Hu
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People’s Republic of China
| | - Ning Dai
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People’s Republic of China
| | - Guoying Qian
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, People’s Republic of China
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36
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Sanz-Marco A, Martinez-Erro S, Pauze M, Gómez-Bengoa E, Martín-Matute B. An umpolung strategy to react catalytic enols with nucleophiles. Nat Commun 2019; 10:5244. [PMID: 31748504 PMCID: PMC6868166 DOI: 10.1038/s41467-019-13175-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 10/24/2019] [Indexed: 01/07/2023] Open
Abstract
The selective synthesis of α-functionalized ketones with two similar enolizable positions can be accomplished using allylic alcohols and iridium(III) catalysts. A formal 1,3-hydrogen shift on allylic alcohols generates catalytic iridium-enolates in a stereospecific manner, which are able to react with electrophiles to yield α-functionalized ketones as single constitutional isomers. However, the employment of nucleophiles to react with the nucleophilic catalytic enolates in this chemistry is still unknown. Herein, we report an umpolung strategy for the selective synthesis of α-alkoxy carbonyl compounds by the reaction of iridium enolates and alcohols promoted by an iodine(III) reagent. Moreover, the protocol also works in an intramolecular fashion to synthesize 3(2H)-furanones from γ-keto allylic alcohols. Experimental and computational investigations have been carried out, and mechanisms are proposed for both the inter- and intramolecular reactions, explaining the key role of the iodine(III) reagent in this umpolung approach. Nucleophiles cannot be directly reacted with enolates due to polarity mismatching. Here, the authors developed an umpolung strategy for the selective synthesis of α-alkoxy carbonyl compounds by reaction of iridium enolates with nucleophilic alcohols promoted by an iodine(III) reagent.
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Affiliation(s)
- Amparo Sanz-Marco
- Department of Organic Chemistry, Stockholm University, Stockholm, SE-10691, Sweden
| | - Samuel Martinez-Erro
- Department of Organic Chemistry, Stockholm University, Stockholm, SE-10691, Sweden
| | - Martin Pauze
- Department of Organic Chemistry, Stockholm University, Stockholm, SE-10691, Sweden.,Departamento de Química Orgánica I, Universidad del País Vasco/UPV-EHU, Manuel de Lardizabal 3, Donostia - San Sebastián, 20018, Spain
| | - Enrique Gómez-Bengoa
- Departamento de Química Orgánica I, Universidad del País Vasco/UPV-EHU, Manuel de Lardizabal 3, Donostia - San Sebastián, 20018, Spain
| | - Belén Martín-Matute
- Department of Organic Chemistry, Stockholm University, Stockholm, SE-10691, Sweden.
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37
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Velasco-Rubio Á, Alexy EJ, Yoritate M, Wright AC, Stoltz BM. Stereospecific Overman Rearrangement of Substituted Cyclic Vinyl Bromides: Access to Fully Substituted α-Amino Ketones. Org Lett 2019; 21:8962-8965. [PMID: 31663754 DOI: 10.1021/acs.orglett.9b03347] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A versatile thermal Overman rearrangement of enantioenriched, cyclic allylic alcohols providing tertiary allylic amines has been developed. The vinyl bromide used to control enantioselectivity in a preceding CBS reduction is utilized as a synthetic handle for the preparation of tertiary α-amino ketones and related derivatives in an asymmetric fashion.
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Affiliation(s)
- Álvaro Velasco-Rubio
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Eric J Alexy
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Makoto Yoritate
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Austin C Wright
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Brian M Stoltz
- Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
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38
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Goliszewska K, Rybicka-Jasińska K, Szurmak J, Gryko D. Visible-Light-Mediated Amination of π-Nucleophiles with N-Aminopyridinium Salts. J Org Chem 2019; 84:15834-15844. [DOI: 10.1021/acs.joc.9b02073] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Katarzyna Goliszewska
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | | | - Jakub Szurmak
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Dorota Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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39
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Abstract
A boron-catalyzed α-amination of simple carboxylic acids was developed. Catalytically generated boron enolates of carboxylic acids reacted with an electrophilic aminating reagent, diisopropylazodicarboxylate, to provide amino acid derivatives. The catalysis afforded not only α-monosubstituted glycine derivatives but also α,α-disubstituted derivatives. The resulting α-aminocarboxylic acid was easily converted to carboxylic acid derivatives. Extension to a catalytic asymmetric variant was possible by introducing a chiral ligand on the boron catalyst.
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Affiliation(s)
- Takuto Morisawa
- Department of Chemistry, Faculty of Science , Hokkaido University , Kita 10 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-0810 , Japan
| | - Masaya Sawamura
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) , Hokkaido University , Kita 21 Nishi 10, Kita-ku , Sapporo , Hokkaido 001-0021 , Japan.,Department of Chemistry, Faculty of Science , Hokkaido University , Kita 10 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-0810 , Japan
| | - Yohei Shimizu
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) , Hokkaido University , Kita 21 Nishi 10, Kita-ku , Sapporo , Hokkaido 001-0021 , Japan.,Department of Chemistry, Faculty of Science , Hokkaido University , Kita 10 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-0810 , Japan
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40
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Nguyen QH, Nguyen NH, Kim H, Shin S. Synthesis of γ-substituted carbonyl compounds from DMSO-mediated oxidation of enynamides: mechanistic insights and carbon- and hetero-functionalizations. Chem Sci 2019; 10:8799-8805. [PMID: 31803452 PMCID: PMC6849631 DOI: 10.1039/c9sc03663f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/04/2019] [Indexed: 02/05/2023] Open
Abstract
1,3-Enynamides underwent oxygenative coupling with carbon- and heteroatom nucleophiles with high remote selectivity. Kinetic analysis revealed a continuum mechanism between concerted SN2′′ and via a carbocation, depending on the nucleophiles used.
Oxidative coupling of 1,3-enynamides using DMSO as a terminal oxidant has been developed. Carbon as well as unmodified heteroatom nucleophiles, including aliphatic alcohols, thiols, and hydrazides, could be efficiently alkylated at the γ-position in a highly regioselective fashion. The kinetic analysis suggested a nucleophile-dependent mechanism ranging from a concerted SN2′′ to a carbocationic mechanism. Thus, the remote site-selectivity was ascribed to the partial positive charge developing at the terminal carbocationic center.
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Affiliation(s)
- Quynh H Nguyen
- Department of Chemistry , Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro, Seongdong-gu , Seoul 04763 , Korea .
| | - Nguyen H Nguyen
- Department of Chemistry , Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro, Seongdong-gu , Seoul 04763 , Korea .
| | - Hanbyul Kim
- Department of Chemistry , Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro, Seongdong-gu , Seoul 04763 , Korea .
| | - Seunghoon Shin
- Department of Chemistry , Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro, Seongdong-gu , Seoul 04763 , Korea .
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41
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Chalotra N, Rizvi MA, Shah BA. Photoredox-Mediated Generation of gem-Difunctionalized Ketones: Synthesis of α,α-Aminothioketones. Org Lett 2019; 21:4793-4797. [PMID: 31184917 DOI: 10.1021/acs.orglett.9b01677] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Neha Chalotra
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | | | - Bhahwal Ali Shah
- AcSIR and Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
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42
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Huang YH, Wang SR, Wu DP, Huang PQ. Intermolecular Dehydrative [4 + 2] Aza-Annulation of N-Arylamides with Alkenes: A Direct and Divergent Entrance to Aza-Heterocycles. Org Lett 2019; 21:1681-1685. [DOI: 10.1021/acs.orglett.9b00233] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ying-Hong Huang
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P.R. China
| | - Shu-Ren Wang
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P.R. China
| | - Dong-Ping Wu
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P.R. China
| | - Pei-Qiang Huang
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P.R. China
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43
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Kuchuk E, Muratov K, Perekalin DS, Chusov D. Anthracene-rhodium complexes with metal coordination at the central ring - a new class of catalysts for reductive amination. Org Biomol Chem 2018; 17:83-87. [PMID: 30520492 DOI: 10.1039/c8ob02561d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new class of anthracene complexes with a metal coordinated at the central ring was applied in catalysis for the first time. As a result, a simple and efficient protocol for reductive amination that involves CO as a reducing agent has been developed. The rhodium complex [(cyclooctadiene)Rh(C10H4Me2(OMe)4)]+ (1 mol%) catalyses such reactions under mild conditions (40-130 °C) and produces a variety of amines in good yields (74-95%) without affecting the functional groups. The protocol is acceptable for all combinations of aldehydes (aromatic and aliphatic), ketones (aromatic and aliphatic) and amines (aromatic and aliphatic; primary and secondary).
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Affiliation(s)
- Ekaterina Kuchuk
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia.
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44
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Affiliation(s)
- Dilip V. Patil
- Department of Chemistry; Center for New Directions in Organic Synthesis (CNOS); Institution for Natural Sciences; Hanyang University; 222 Wangsimni-ro Seongdong-gu Seoul Korea 14763
| | - Seunghoon Shin
- Department of Chemistry; Center for New Directions in Organic Synthesis (CNOS); Institution for Natural Sciences; Hanyang University; 222 Wangsimni-ro Seongdong-gu Seoul Korea 14763
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45
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Kishi K, Takizawa S, Sasai H. Phosphine-Catalyzed Dual Umpolung Domino Michael Reaction: Facile Synthesis of Hydroindole- and Hydrobenzofuran-2-Carboxylates. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01011] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Kenta Kishi
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
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46
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Jarret M, Tap A, Kouklovsky C, Poupon E, Evanno L, Vincent G. Bioinspired Oxidative Cyclization of the Geissoschizine Skeleton for the Total Synthesis of (−)-17-nor-Excelsinidine. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802610] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maxime Jarret
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); Equipe MSMT; Univ. Paris-Sud, CNRS; Université Paris-Saclay; 15, rue Georges Clémenceau 91405 Orsay, Cedex France
| | - Aurélien Tap
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); Equipe MSMT; Univ. Paris-Sud, CNRS; Université Paris-Saclay; 15, rue Georges Clémenceau 91405 Orsay, Cedex France
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); Equipe MSMT; Univ. Paris-Sud, CNRS; Université Paris-Saclay; 15, rue Georges Clémenceau 91405 Orsay, Cedex France
| | - Erwan Poupon
- Pharmacognosie et chimie des substances naturelles; BioCIS; Univ. Paris-Sud, Université Paris-Saclay, CNRS; 92290 Châtenay-Malabry France
| | - Laurent Evanno
- Pharmacognosie et chimie des substances naturelles; BioCIS; Univ. Paris-Sud, Université Paris-Saclay, CNRS; 92290 Châtenay-Malabry France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO); Equipe MSMT; Univ. Paris-Sud, CNRS; Université Paris-Saclay; 15, rue Georges Clémenceau 91405 Orsay, Cedex France
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47
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Jarret M, Tap A, Kouklovsky C, Poupon E, Evanno L, Vincent G. Bioinspired Oxidative Cyclization of the Geissoschizine Skeleton for the Total Synthesis of (-)-17-nor-Excelsinidine. Angew Chem Int Ed Engl 2018; 57:12294-12298. [PMID: 29575642 DOI: 10.1002/anie.201802610] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 03/19/2018] [Indexed: 11/10/2022]
Abstract
We report the first total synthesis of (-)-17-nor-excelsinidine, a zwitterionic monoterpene indole alkaloid that displays an unusual N4-C16 connection. Inspired by the postulated biosynthesis, we explored an oxidative coupling approach from the geissoschizine framework to forge the key ammonium-acetate connection. Two strategies allowed us to achieve this goal, namely an intramolecular nucleophilic substitution on a 16-chlorolactam with the N4 nitrogen atom or a direct I2 -mediated N4-C16 oxidative coupling from the enolate of geissoschizine.
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Affiliation(s)
- Maxime Jarret
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe MSMT, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clémenceau, 91405, Orsay, Cedex, France
| | - Aurélien Tap
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe MSMT, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clémenceau, 91405, Orsay, Cedex, France
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe MSMT, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clémenceau, 91405, Orsay, Cedex, France
| | - Erwan Poupon
- Pharmacognosie et chimie des substances naturelles, BioCIS, Univ. Paris-Sud, Université Paris-Saclay, CNRS, 92290, Châtenay-Malabry, France
| | - Laurent Evanno
- Pharmacognosie et chimie des substances naturelles, BioCIS, Univ. Paris-Sud, Université Paris-Saclay, CNRS, 92290, Châtenay-Malabry, France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Equipe MSMT, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clémenceau, 91405, Orsay, Cedex, France
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48
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Li Y, Zhang R, Bi X, Fu J. Multifunctionalization of Unactivated Cyclic Ketones via Synergistic Catalysis of Copper and Diarylamine: Access to Cyclic α-Enaminone. Org Lett 2018; 20:1207-1211. [PMID: 29420046 DOI: 10.1021/acs.orglett.8b00125] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A multifunctionalization of unactivated cyclic ketones via synergistic catalysis of copper and diarylamine for the direct synthesis of cyclic α-enaminone is reported for the first time. This reaction goes through oxidative α-amination, followed by a desaturation, and features mild reaction conditions, a broad substrate scope, and great functional group tolerance.
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Affiliation(s)
- Yang Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, China
| | - Ran Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, China
| | - Junkai Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University , Changchun 130024, China.,Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School , Shenzhen 518055, China
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49
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More AA, Pathe GK, Parida KN, Maksymenko S, Lipisa YB, Szpilman AM. α-N-Heteroarylation and α-Azidation of Ketones via Enolonium Species. J Org Chem 2018; 83:2442-2447. [PMID: 29334466 DOI: 10.1021/acs.joc.7b03058] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Enolonium species, resulting from the umpolung of ketone enolates by Koser's hypervalent iodine reagents activated by boron trifluoride, react with a variety of nitrogen heterocycles to form α-aminated ketones. The reactions are mild and complete in 4-5 h. Additionally, α-azidation of the enolonium species takes place using trimethylsilyl azide as a convenient source of azide nucleophile.
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Affiliation(s)
- Atul A More
- Department of Chemical Sciences, Ariel University , 4070000 Ariel, Israel
| | - Gulab K Pathe
- Department of Chemical Sciences, Ariel University , 4070000 Ariel, Israel
| | - Keshaba N Parida
- Department of Chemical Sciences, Ariel University , 4070000 Ariel, Israel
| | - Shimon Maksymenko
- Department of Chemical Sciences, Ariel University , 4070000 Ariel, Israel
| | - Yuriy B Lipisa
- Department of Chemical Sciences, Ariel University , 4070000 Ariel, Israel
| | - Alex M Szpilman
- Department of Chemical Sciences, Ariel University , 4070000 Ariel, Israel
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50
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Jiang Y, Deng JD, Wang HH, Zou JX, Wang YQ, Chen JH, Zhu LQ, Zhang HH, Peng X, Wang Z. Direct access to α-sulfenylated amides/esters via sequential oxidative sulfenylation and C–C bond cleavage of 3-oxobutyric amides/esters. Chem Commun (Camb) 2018; 54:802-805. [DOI: 10.1039/c7cc09026a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An efficient, environmentally benign and unprecedented synthesis of various α-sulfenylated amides/esters has been developed under oxygen atmosphere.
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Affiliation(s)
- Yi Jiang
- School of Pharmacy, Lanzhou University
- Lanzhou 730000
- China
| | - Jie-dan Deng
- Institution State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Hui-hong Wang
- School of Pharmacy, Lanzhou University
- Lanzhou 730000
- China
| | - Jiao-xia Zou
- School of Pharmacy, Lanzhou University
- Lanzhou 730000
- China
| | | | - Jin-hong Chen
- School of Pharmacy, Lanzhou University
- Lanzhou 730000
- China
| | - Long-qing Zhu
- School of Pharmacy, Lanzhou University
- Lanzhou 730000
- China
| | - Hong-hua Zhang
- School of Pharmacy, Lanzhou University
- Lanzhou 730000
- China
| | - Xue Peng
- School of Pharmacy, Lanzhou University
- Lanzhou 730000
- China
| | - Zhen Wang
- School of Pharmacy, Lanzhou University
- Lanzhou 730000
- China
- Institution State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
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