1
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Liu T, Yisimayili N, Chu LF, Lu CD. Diastereoselective Synthesis of Less Accessible Fluorine-Containing Acyclic Tetrasubstituted Stereocenters via Electrophilic Fluorination of β,β-Disubstituted Metalloenamines. J Org Chem 2024; 89:5726-5740. [PMID: 38598176 DOI: 10.1021/acs.joc.4c00306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
A stereocontrolled protocol was developed to construct less accessible fluorine-containing acyclic tetrasubstituted stereocenters bearing two sterically and electronically similar alkyl groups at the α-position of carbonyls. In this process, tBuOK-promoted stereospecific α-deprotonation of α,α-disubstituted N-tert-butanesulfinyl ketimines or NH deprotonation of β,β-disubstituted enesulfinamides generates geometry-defined multisubstituted metalloenamines, followed by stereoselective electrophilic fluorination with the N-fluoro ammonium salt of quinine, affording the acyclic α-fluorinated ketimines with excellent diastereoselectivities.
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Affiliation(s)
- Tao Liu
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China
| | | | - Li-Feng Chu
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China
| | - Chong-Dao Lu
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan 650091, China
- School of Health, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
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2
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Huang J, Li T, Lu X, Ma D. Copper-Catalyzed α-Arylation of Nitroalkanes with (Hetero)aryl Bromides/Iodides. Angew Chem Int Ed Engl 2024; 63:e202315994. [PMID: 38151905 DOI: 10.1002/anie.202315994] [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: 10/22/2023] [Revised: 12/21/2023] [Accepted: 12/27/2023] [Indexed: 12/29/2023]
Abstract
α-Aryl substituted nitroalkanes are valuable synthetic building blocks that can be easily converted into α-aryl substituted aldehydes, ketones, carboxylic acids, as well as amines. Herein, an efficient Cu/oxalamide-catalyzed coupling between nitroalkanes and (hetero)aryl halides (Br, I) was developed to direct access highly diverse α-aryl substituted nitroalkanes. Compared with the current state of art, this protocol is more environmentally friendly and practical for synthetic chemists. This approach is characterized by a broad substrate scope on both nitroalkane part (primary nitroalkanes and nitromethane) and sp2 halide part ((hetero)aryl bromides/iodides and alkenyl bromides/iodides). The excellent functional group tolerance was observed, which would enable real world synthetic applications. More importantly, TON of current transformation reached to 3640, when some aryl iodides were used as coupling partners. This represents currently the highest catalyst turnover for transition-metal catalyzed α-arylation of nitroalkanes. Furthermore, the successful application in late-stage modification of complex molecules and synthesis of a known retinoid X receptor (RXR) antagonist exemplified its synthetic potential.
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Affiliation(s)
- Jianqiang Huang
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology (SUSTech), Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Taian Li
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology (SUSTech), Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Xiaobiao Lu
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology (SUSTech), Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Dawei Ma
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology (SUSTech), Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
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3
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Shavrina OM, Rassukana YV, Onysko PP. Recent Advancements in the Synthesis of α-fluoroalkylated Azine-derived Heterocycles through Direct Fluorination. Curr Org Synth 2024; 21:1053-1074. [PMID: 38037906 DOI: 10.2174/0115701794271650231016094853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/08/2023] [Accepted: 09/21/2023] [Indexed: 12/02/2023]
Abstract
The review highlights recent advancements in the synthesis of α-fluoro and α,α- difluoroalkylated azines, focusing on two main approaches. The first approach involves nucleophilic deoxofluorination, wherein α-hydroxy- or α-oxoalkylated azines are treated with diethylaminosulfur trifluoride or other S-F reagents to introduce fluorine atoms. The second approach employs direct electrophilic benzylic fluorination, whereby alkylazines undergo fluorination using N-F reagents. Both methods provide flexibility in designing and synthesizing fluoroalkylated heterocycles.
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Affiliation(s)
- Oksana M Shavrina
- Department of Chemistry of Organoelement Compounds, Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukharya str., Kyiv, 02660, Ukraine
| | - Yuliya V Rassukana
- Department of Chemistry of Organoelement Compounds, Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukharya str., Kyiv, 02660, Ukraine
| | - Petro P Onysko
- Department of Chemistry of Organoelement Compounds, Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 5 Akademika Kukharya str., Kyiv, 02660, Ukraine
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4
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Bing JA, Johnston JN. Enantioselective Synthesis of cis- and trans-Cycloheptyl β-Fluoro Amines by Sequential aza-Henry Addition/Ring-Closing Metathesis. Org Lett 2023; 25:950-955. [PMID: 36735762 PMCID: PMC10240541 DOI: 10.1021/acs.orglett.2c04285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The synthesis of 7-membered carbocyclic β-fluoroamines is accomplished by a combination of the enantioselective aza-Henry reaction of aliphatic N-Boc imines and ring-closing metathesis. Use of reductive denitration gives both diastereomers of the β-fluoro amine carbocycle, each with high enantiomeric excess.
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Affiliation(s)
- Jade A. Bing
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235
| | - Jeffrey N. Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235
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5
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Gu W, Li J, Li K, Sun Q, Li T, Zha Z, Wang Z. Construction of a Chiral β-Fluoroamine by Asymmetric Mannich Reaction of 2-Fluoroindanone with Pyrazolinone Ketimines. J Org Chem 2023. [PMID: 36749177 DOI: 10.1021/acs.joc.2c02040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The asymmetric Mannich reaction of 2-fluoroindanone with ketimine was developed under the catalysis of a kind of chiral copper complex, affording a chiral tetrahedral center containing fluorine. A series of β-fluoroamine derivatives can be obtained in excellent yields (73-94%) with high diastereoselectivities (>99:1 dr) and enantioselectivities (89-99%). The possible transition state was supported by density functional theory calculation.
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Affiliation(s)
- Weizhi Gu
- Hefei National Research Center for Physical Sciences at Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jindong Li
- Hefei National Research Center for Physical Sciences at Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Kuiliang Li
- Hefei National Research Center for Physical Sciences at Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Qi Sun
- Hefei National Research Center for Physical Sciences at Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Tong Li
- Hefei National Research Center for Physical Sciences at Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhenggen Zha
- Hefei National Research Center for Physical Sciences at Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhiyong Wang
- Hefei National Research Center for Physical Sciences at Microscale, Center for Excellence in Molecular Synthesis, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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6
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Fu H, Qiao T, Carceller JM, MacMillan SN, Hyster TK. Asymmetric C-Alkylation of Nitroalkanes via Enzymatic Photoredox Catalysis. J Am Chem Soc 2023; 145:787-793. [PMID: 36608280 DOI: 10.1021/jacs.2c12197] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Tertiary nitroalkanes and the corresponding α-tertiary amines represent important motifs in bioactive molecules and natural products. The C-alkylation of secondary nitroalkanes with electrophiles is a straightforward strategy for constructing tertiary nitroalkanes; however, controlling the stereoselectivity of this type of reaction remains challenging. Here, we report a highly chemo- and stereoselective C-alkylation of nitroalkanes with alkyl halides catalyzed by an engineered flavin-dependent "ene"-reductase (ERED). Directed evolution of the old yellow enzyme from Geobacillus kaustophilus provided a triple mutant, GkOYE-G7, capable of synthesizing tertiary nitroalkanes in high yield and enantioselectivity. Mechanistic studies indicate that the excitation of an enzyme-templated charge-transfer complex formed between the substrates and cofactor is responsible for radical initiation. Moreover, a single-enzyme two-mechanism cascade reaction was developed to prepare tertiary nitroalkanes from simple nitroalkenes, highlighting the potential to use one enzyme for two mechanistically distinct reactions.
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Affiliation(s)
- Haigen Fu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
| | - Tianzhang Qiao
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
| | - Jose M Carceller
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States.,Institute of Chemical Technology (ITQ), Universitat Politècnica de València, València 46022, Spain
| | - Samantha N MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
| | - Todd K Hyster
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
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7
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Smajlagic I, Johnston JN, Dudding T. Secondary Orbital Effect Involving Fluorine is Responsible for Substrate-Controlled Diastereodivergence in the Catalyzed syn-aza-Henry Reaction of α-Fluoronitroalkanes. Chemistry 2023; 29:e202204066. [PMID: 36607705 DOI: 10.1002/chem.202204066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 01/07/2023]
Abstract
The fluorine atom is a powerful, yet enigmatic influence on chemical reactions. True to form, fluorine was recently discovered to effect diastereodivergence in an enantioselective aza-Henry reaction, resulting in a very rare case of syn-β-amino nitroalkane products. More bewildering was the observation of an apparent hierarchy of substituents within this substrate-controlled behavior: Ph>F>alkyl. These cases have now been examined comprehensively by computational methods, including both non-fluorinated and α-fluoro nitronate additions to aldimines catalyzed by a chiral bis(amidine) [BAM] proton complex. This study revealed the network of non-covalent interactions that dictate anti- (α-aryl) versus syn-selectivity (α-alkyl) using α-fluoronitronate nucleophiles, and an underlying secondary orbital interaction between fluorine and the activated azomethine.
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Affiliation(s)
- Ivor Smajlagic
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St., Catharines, ON L2S 3A1, Canada
| | - Jeffrey N Johnston
- Department of Chemistry and Institute of Chemical Biology, Vanderbilt University Nashville, Tennessee, 37235, USA
| | - Travis Dudding
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St., Catharines, ON L2S 3A1, Canada
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8
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Lang K, Hu Y, Cindy Lee WC, Zhang XP. Combined radical and ionic approach for the enantioselective synthesis of β-functionalized amines from alcohols. NATURE SYNTHESIS 2022; 1:548-557. [PMID: 36713299 PMCID: PMC9881596 DOI: 10.1038/s44160-022-00107-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Chiral amines are among the most important organic compounds and have widespread applications. Enantioselective construction of chiral amines is a major aim in organic synthesis. Among synthetic methods, direct functionalization of omnipresent C-H bonds with common organic nitrogen compounds represents one of the most attractive strategies. However, C-H amination strategies are largely limited to constructing a specific type of N-heterocycles or amine derivatives. To maximize the synthetic potential of asymmetric C-H amination, we report here an approach that unites the complementary reactivities of radical and ionic chemistry for streamlined synthesis of functionalized chiral amines. This synthesis merges the development of an enantioselective radical process for 1,5-C(sp 3)-H amination of alkoxysulfonyl azides via Co(II)-based metalloradical catalysis with an enantiospecific ionic process for ring-opening of the resulting five-membered chiral sulfamidates by nucleophiles. Given that alkoxysulfonyl azides are derived from the corresponding alcohols, this approach offers a powerful synthetic tool for enantioselective β-C-H amination of common alcohols while converting the hydroxy group to other functionalities through formal nucleophilic substitution.
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Affiliation(s)
- Kai Lang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Yang Hu
- Department of Chemistry, University of South Florida, Tampa, FL, USA
| | - Wan-Chen Cindy Lee
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - X. Peter Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA.,
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9
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Bing JA, Schley ND, Johnston JN. Fluorine-induced diastereodivergence discovered in an equally rare enantioselective syn-aza-Henry reaction. Chem Sci 2022; 13:2614-2623. [PMID: 35356677 PMCID: PMC8890141 DOI: 10.1039/d1sc05910f] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/03/2022] [Indexed: 11/21/2022] Open
Abstract
Attention to the aza-Henry reaction, particularly over the past two decades, has resulted in a wide range of effective catalysts for the enantio- and diastereoselective versions, driven by the versatility of the β-amino nitroalkane products as precursors to secondary amines and vic-diamines. Despite this broad effort, syn-diastereoselective variants are exceedingly rare. We have discovered a subset of α-fluoro nitroalkane additions that are characterized by an unusual crossover in diastereoselection, often delivering the products with high selectivities. We report here a rigorous comparative analysis of non-fluorinated and α-fluoro nitroalkanes in their additions to azomethines. Both homogeneous and heterogeneous catalysis were applied to probe the possibility that this phenomenon might be more widely operative in the enantioselective additions of fluorine-substituted carbon nucleophiles. A complete correlation within four categories is described that uncovered a clear trend, while revealing a dramatic and distinct reversal of diastereoselection that would normally go undetected.
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Affiliation(s)
- Jade A Bing
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University Nashville Tennessee 37235-1822 USA
| | - Nathan D Schley
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University Nashville Tennessee 37235-1822 USA
| | - Jeffrey N Johnston
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University Nashville Tennessee 37235-1822 USA
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10
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Struble TJ, Smajlagic I, Foy H, Dudding T, Johnston JN. DFT-Based Stereochemical Rationales for the Bifunctional Brønsted Acid/Base-Catalyzed Diastereodivergent and Enantioselective aza-Henry Reactions of α-Nitro Esters. J Org Chem 2021; 86:15606-15617. [PMID: 34669416 DOI: 10.1021/acs.joc.1c02112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A pair of chiral bis(amidine) [BAM] proton complexes provide reagent (catalyst)-controlled, highly diastereo- and enantioselective direct aza-Henry reactions leading to α-alkyl-substituted α,β-diamino esters. A C2-symmetric ligand provides high anti-selectivity, while a nonsymmetric congener exhibits syn-selectivity in this example of diastereodivergent, enantioselective catalysis. A detailed computational analysis is reported for the first time, one that supports distinct models for selectivity resulting from the more hindered binding cavity of the C1-symmetric ligand. Binding in this congested pocket accommodates four hydrogen bond contacts among ligands and substrates, ultimately favoring a pre-syn arrangement highlighted by pyridinium-azomethine activation and quinolinium-nitronate activation. The complementary transition states reveal a wide range of alternatives. Comparing the C1- and C2-symmetric catalysts highlights distinct electrophile binding orientations despite their common hydrogen bond donor-acceptor features. Among the factors driving unusual high syn-diastereoselection are favorable dispersion forces that leverage the anthracenyl substituent of the C1-symmetric ligand.
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Affiliation(s)
- Thomas J Struble
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ivor Smajlagic
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Hayden Foy
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Travis Dudding
- Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Jeffrey N Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
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11
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Dabiri M, Lehi NF, Mohammadian R. Catalytic stereoselective Mannich-type reactions for construction of fluorinated compounds. Mol Divers 2021; 26:1267-1310. [PMID: 34228344 DOI: 10.1007/s11030-021-10235-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 05/13/2021] [Indexed: 10/20/2022]
Abstract
For its unique role in developing and designing new bioactive materials and healthcare products, fluoro-organic compounds have attracted remarkable interest. Along with ever-increasing demand for a wider availability of fluorine-containing structural units, a large diversity of methods has been introduced to incorporate fluorine atoms specially in a stereoselective fashion. Among them, catalytic Mannich reaction can proceed with a broad variety of reactants and open clear paths for the synthesis of versatile amine synthons in the synthesis of natural product and pharmaceutical molecules. This review provides an overview of the employment of catalytic asymmetric Mannich reactions in the synthesis of fluorine-containing amine compounds and highlights the conceivable distinct mechanisms.
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Affiliation(s)
- Minoo Dabiri
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran.
| | - Noushin Farajinia Lehi
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran
| | - Reza Mohammadian
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran
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12
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Peng CJ, Pei JP, Chen YH, Wu ZY, Liu M, Liu YK. Enantioselective organocatalytic sequential Michael-cyclization of functionalized nitroalkanes to 2-hydroxycinnamaldehydes: synthesis of benzofused dioxa[3.3.1] and oxa[4.3.1] methylene-bridged compounds. Org Chem Front 2021. [DOI: 10.1039/d1qo00501d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic enantioselective conjugate addition-initiated reaction sequence of 2-hydroxycinnamaldehydes with various functionalized nitroalkanes has been described to synthesize structurally diverse chromane-containing compounds.
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Affiliation(s)
- Chen-Jun Peng
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Jun-Ping Pei
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Ying-Han Chen
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Zhi-Yong Wu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Ming Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
| | - Yan-Kai Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs
- Ministry of Education
- School of Medicine and Pharmacy
- Ocean University of China
- Qingdao 266003
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13
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Fused multifunctionalized bridge aromatic hydrocarbons from in situ-generated arynes and anthracene derivatives. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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González‐Martínez D, Cuetos A, Sharma M, García‐Ramos M, Lavandera I, Gotor‐Fernández V, Grogan G. Asymmetric Synthesis of Primary and Secondary β‐Fluoro‐arylamines using Reductive Aminases from Fungi. ChemCatChem 2020. [DOI: 10.1002/cctc.201901999] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Daniel González‐Martínez
- Department of Chemistry University of York Heslington, York YO10 5DD UK
- Department of Organic and Inorganic Chemistry University of Oviedo Avenida Julián Clavería 8 33006 Oviedo (Asturias) Spain
| | - Aníbal Cuetos
- Department of Chemistry University of York Heslington, York YO10 5DD UK
| | - Mahima Sharma
- Department of Chemistry University of York Heslington, York YO10 5DD UK
| | - Marina García‐Ramos
- Department of Organic and Inorganic Chemistry University of Oviedo Avenida Julián Clavería 8 33006 Oviedo (Asturias) Spain
| | - Iván Lavandera
- Department of Organic and Inorganic Chemistry University of Oviedo Avenida Julián Clavería 8 33006 Oviedo (Asturias) Spain
| | - Vicente Gotor‐Fernández
- Department of Organic and Inorganic Chemistry University of Oviedo Avenida Julián Clavería 8 33006 Oviedo (Asturias) Spain
| | - Gideon Grogan
- Department of Chemistry University of York Heslington, York YO10 5DD UK
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15
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Trost BM, Tracy JS, Yusoontorn T, Hung CJ. Acyclic Branched α‐Fluoro Ketones for the Direct Asymmetric Mannich Reaction Leading to the Synthesis of β‐Tetrasubstituted β‐Fluoro Amines. Angew Chem Int Ed Engl 2020; 59:2370-2374. [DOI: 10.1002/anie.201913927] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Jacob S. Tracy
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Tas Yusoontorn
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Chao‐I Joey Hung
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
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16
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Trost BM, Tracy JS, Yusoontorn T, Hung CJ. Acyclic Branched α‐Fluoro Ketones for the Direct Asymmetric Mannich Reaction Leading to the Synthesis of β‐Tetrasubstituted β‐Fluoro Amines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913927] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Jacob S. Tracy
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Tas Yusoontorn
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Chao‐I Joey Hung
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
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17
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Tiwari V, Bingham JT, Vyas S, Singh A. Intermolecular fluoroamination of allenes towards substituted vinyl fluorides. Org Biomol Chem 2020; 18:9044-9049. [DOI: 10.1039/d0ob01697g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Allene difunctionalization: Selectfluor mediated intermolecular aminofluorination of allenes with triazole and tetrazole nucleophiles towards vinyl fluorides.
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Affiliation(s)
- Vibha Tiwari
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | | | - Shubham Vyas
- Department of Chemistry
- Colorado School of Mines
- Golden
- USA
| | - Anand Singh
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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18
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Devannah V, Sharma R, Watson DA. Nickel-Catalyzed Asymmetric C-Alkylation of Nitroalkanes: Synthesis of Enantioenriched β-Nitroamides. J Am Chem Soc 2019; 141:8436-8440. [PMID: 31082224 DOI: 10.1021/jacs.9b04175] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A general catalytic method for asymmetric C-alkylation of nitroalkanes using nickel catalysis is described. This method enables the formation of highly enantioenriched β-nitroamides from readily available α-bromoamides using mild reaction conditions that are compatible with a wide range of functional groups. When combined with subsequent reactions, this method allows access to highly enantioenriched products with nitrogen-bearing fully substituted carbon centers.
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Affiliation(s)
- Vijayarajan Devannah
- Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States
| | - Rajgopal Sharma
- Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States
| | - Donald A Watson
- Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States
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19
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Chevis PJ, Wangngae S, Thaima T, Carroll AW, Willis AC, Pattarawarapan M, Pyne SG. Highly diastereoselective synthesis of enantioenriched anti-α-allyl-β-fluoroamines. Chem Commun (Camb) 2019; 55:6050-6053. [PMID: 31065637 DOI: 10.1039/c9cc02765c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A highly diastereoselective synthesis of anti-α-allyl-β-fluoroamines has been developed involving enantioselective α-fluorination of aldehydes followed by a diastereoselective Petasis allyl borono-Mannich reaction. The products are obtained generally in good overall yields for the two steps and with drs of 97 : 3-99 : 1 and ees of 86-92%. Selected products were converted to 3-, 5- and 6-membered ring heterocycles, the latter two types incorporating an exo-cyclic fluorine.
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Affiliation(s)
- Philip J Chevis
- School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, New South Wales 2522, Australia.
| | - Sirilak Wangngae
- School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, New South Wales 2522, Australia. and Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Thanaphat Thaima
- School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, New South Wales 2522, Australia.
| | - Anthony W Carroll
- School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, New South Wales 2522, Australia.
| | - Anthony C Willis
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Mookda Pattarawarapan
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Stephen G Pyne
- School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, New South Wales 2522, Australia.
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20
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Crocker MS, Foy H, Tokumaru K, Dudding T, Pink M, Johnston JN. Direct Observation and Analysis of the Halo-Amino-Nitro Alkane Functional Group. Chem 2019; 5:1248-1264. [PMID: 32766460 DOI: 10.1016/j.chempr.2019.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Conventional amide synthesis is a mainstay in discipline-spanning applications, and it is a reaction type that historically developed as a singular paradigm when considering the carbon-nitrogen bond-forming step. Umpolung amide synthesis (UmAS) exploits the unique properties of an α-halo nitroalkane in its reaction with an amine to produce an amide. The "umpolung" moniker reflects its paradigm-breaking C-N bond formation on the basis of evidence that the nucleophilic nitronate carbon and electrophilic nitrogen engage to form a tetrahedral intermediate (TI) that is an unprecedented functional group, a 1,1,1-halo-amino-nitro alkane (HANA). Studies probing HANA transience have failed to capture this (presumably) highly reactive intermediate. We report here the direct observation of a HANA, its conversion thermally to an amide functionality, and quantitative analysis of this process using computational techniques. These findings validate the HANA as a functional group common to UmAS and diverted UmAS, opening the door to its targeted use and creative manipulation.
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Affiliation(s)
- Michael S Crocker
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA
| | - Hayden Foy
- Department of Chemistry, Brock University, St. Catharines, ON, Canada
| | - Kazuyuki Tokumaru
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA
| | - Travis Dudding
- Department of Chemistry, Brock University, St. Catharines, ON, Canada
| | - Maren Pink
- Indiana University Molecular Structure Center, Bloomington, IN 47405, USA
| | - Jeffrey N Johnston
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235-1822, USA.,Lead Contact
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21
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Politanskaya LV, Selivanova GA, Panteleeva EV, Tretyakov EV, Platonov VE, Nikul’shin PV, Vinogradov AS, Zonov YV, Karpov VM, Mezhenkova TV, Vasilyev AV, Koldobskii AB, Shilova OS, Morozova SM, Burgart YV, Shchegolkov EV, Saloutin VI, Sokolov VB, Aksinenko AY, Nenajdenko VG, Moskalik MY, Astakhova VV, Shainyan BA, Tabolin AA, Ioffe SL, Muzalevskiy VM, Balenkova ES, Shastin AV, Tyutyunov AA, Boiko VE, Igumnov SM, Dilman AD, Adonin NY, Bardin VV, Masoud SM, Vorobyeva DV, Osipov SN, Nosova EV, Lipunova GN, Charushin VN, Prima DO, Makarov AG, Zibarev AV, Trofimov BA, Sobenina LN, Belyaeva KV, Sosnovskikh VY, Obydennov DL, Usachev SA. Organofluorine chemistry: promising growth areas and challenges. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4871] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Balaji PV, Brewitz L, Kumagai N, Shibasaki M. Achiral Trisubstituted Thioureas as Secondary Ligands to Cu
I
Catalysts: Direct Catalytic Asymmetric Addition of α‐Fluoronitriles to Imines. Angew Chem Int Ed Engl 2019; 58:2644-2648. [DOI: 10.1002/anie.201812673] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Indexed: 12/27/2022]
Affiliation(s)
| | - Lennart Brewitz
- Institute of Microbial Chemistry(BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry(BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry(BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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23
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Motornov VA, Tabolin AA, Nelyubina YV, Nenajdenko VG, Ioffe SL. Copper-mediated oxidative [3 + 2]-annulation of nitroalkenes and pyridinium ylides: general access to functionalized indolizines and efficient synthesis of 1-fluoroindolizines. Org Biomol Chem 2019; 17:1442-1454. [PMID: 30672946 DOI: 10.1039/c8ob03126f] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A general method for the synthesis of substituted indolizines by copper(ii) acetate-promoted oxidative [3 + 2]-annulation of α-fluoronitroalkenes with in situ generated pyridinium ylides was developed. Application of the copper(ii) acetate-2,6-lutidine system provides efficient access to various 1-fluoroindolizines in up to 81% yield. Both electron-rich and electron-deficient nitroalkenes as well as different pyridinium and isoquinolinium salts can be involved in the reaction. Moreover, it was found that copper-mediated annulation is applicable for other α-substituted (alkyl, chloro, and ester) nitroalkenes giving rise to the corresponding indolizines. First synthesis of monofluorinated [3,2,2]cyclazines was demonstrated via oxidative annulation of 3-unsubstituted fluoroindolizines with diethyl acetylene dicarboxylate.
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Affiliation(s)
- Vladimir A Motornov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
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24
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Vishe M, Johnston JN. The inverted ketene synthon: a double umpolung approach to enantioselective β 2,3-amino amide synthesis. Chem Sci 2019; 10:1138-1143. [PMID: 30774911 PMCID: PMC6349014 DOI: 10.1039/c8sc04330b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 11/11/2018] [Indexed: 12/29/2022] Open
Abstract
A stereocontrolled synthesis of β2,3-amino amides is reported. Innovation is encapsulated by the first use of nitroalkenes to achieve double umpolung in enantioselective β-amino amide synthesis. Step economy is also fulfilled by the use of Umpolung Amide Synthesis (UmAS) in the second step, delivering the amide product without intermediacy of a carboxylic acid or activated derivative. Molybdenum oxide-mediated hydride reduction provides the anti-β2,3-amino amide with high selectivity.
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Affiliation(s)
- Mahesh Vishe
- Department of Chemistry , Vanderbilt Institute of Chemical Biology Vanderbilt University , Nashville , Tennessee 37235 , USA .
| | - Jeffrey N Johnston
- Department of Chemistry , Vanderbilt Institute of Chemical Biology Vanderbilt University , Nashville , Tennessee 37235 , USA .
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25
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Pupo G, Vicini AC, Ascough DMH, Ibba F, Christensen KE, Thompson AL, Brown JM, Paton RS, Gouverneur V. Hydrogen Bonding Phase-Transfer Catalysis with Potassium Fluoride: Enantioselective Synthesis of β-Fluoroamines. J Am Chem Soc 2019; 141:2878-2883. [DOI: 10.1021/jacs.8b12568] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gabriele Pupo
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Anna Chiara Vicini
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - David M. H. Ascough
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Francesco Ibba
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Kirsten E. Christensen
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Amber L. Thompson
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - John M. Brown
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Robert S. Paton
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Véronique Gouverneur
- Chemistry Research
Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
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26
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Balaji PV, Brewitz L, Kumagai N, Shibasaki M. Achiral Trisubstituted Thioureas as Secondary Ligands to Cu
I
Catalysts: Direct Catalytic Asymmetric Addition of α‐Fluoronitriles to Imines. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812673] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Lennart Brewitz
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN) 3-14-23 Kamiosaki, Shinagawa-ku Tokyo 141-0021 Japan
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27
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Huang W, Yao Y, Xu YJ, Lu CD. Diastereoselective α-Fluorination of N- tert-Butanesulfinyl Imidates. J Org Chem 2018; 83:14777-14785. [PMID: 30407820 DOI: 10.1021/acs.joc.8b02375] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A diastereoselective α-fluorination of N- tert-butanesulfinyl imidates was developed. Deprotonation of N- tert-butanesulfinyl imidates with lithium hexamethyldisilazide generates aza-enolates that can be intercepted, with excellent diastereocontrol, by the inexpensive electrophilic fluorinating agent NFSI. This protocol was applied to the preparation of synthetically useful trans-2-fluoro-cyclohexamine with high enantiomeric purity (99.5% ee).
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Affiliation(s)
- Wei Huang
- Key Laboratory of Plant Resources and Chemistry of Arid Zones, Xinjiang Technical Institute of Physics and Chemistry , Chinese Academy of Sciences , Urumqi 830011 , China
| | - Yun Yao
- School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China
| | - Yan-Jun Xu
- Key Laboratory of Plant Resources and Chemistry of Arid Zones, Xinjiang Technical Institute of Physics and Chemistry , Chinese Academy of Sciences , Urumqi 830011 , China
| | - Chong-Dao Lu
- School of Chemical Science and Technology , Yunnan University , Kunming 650091 , China.,Key Laboratory of Plant Resources and Chemistry of Arid Zones, Xinjiang Technical Institute of Physics and Chemistry , Chinese Academy of Sciences , Urumqi 830011 , China
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28
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Affiliation(s)
- Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Jianwei Sun
- Department of Chemistry, the Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
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29
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Furukawa Y, Suzuki R, Nakashima T, Gramage-Doria R, Ohmatsu K, Ooi T. Protonated Bis-1,2,3-triazole as an Anion-Binding Chiral Brønsted Acid for Catalytic Asymmetric Friedel–Crafts Reaction of Indoles with Imines. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180098] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yukino Furukawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Ryuhei Suzuki
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Tsubasa Nakashima
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Rafael Gramage-Doria
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Kohsuke Ohmatsu
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
- CREST, Japan Science and Technology Agency (JST), Chikusa, Nagoya, Aichi 464-8601, Japan
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30
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A diastereoselective Mannich reaction of α-fluoroketones with ketimines: Construction of β-fluoroamine motifs with vicinal tetrasubstituted stereocenters. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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31
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Yip SJ, Yoshidomi T, Murakami K, Itami K. Synthesis of α-Fluoroimines by Copper-catalyzed Reaction of Diarylacetylenes and N-Fluorobenzenesulfonimide. CHEM LETT 2018. [DOI: 10.1246/cl.171097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shu Jan Yip
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Tetsushi Yoshidomi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Kei Murakami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Kenichiro Itami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
- JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
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32
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Parisi G, Colella M, Monticelli S, Romanazzi G, Holzer W, Langer T, Degennaro L, Pace V, Luisi R. Exploiting a "Beast" in Carbenoid Chemistry: Development of a Straightforward Direct Nucleophilic Fluoromethylation Strategy. J Am Chem Soc 2017; 139:13648-13651. [PMID: 28892363 DOI: 10.1021/jacs.7b07891] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The first direct and straightforward nucleophilic fluoromethylation of organic compounds is reported. The tactic employs a "fleeting" lithium fluorocarbenoid (LiCH2F) generated from commercially available fluoroiodomethane. Precise reaction conditions were developed for the generation and synthetic exploitation of such a labile species. The versatility of the strategy is showcased in ca. 50 examples involving a plethora of electrophiles. Highly valuable chemicals such as fluoroalcohols, fluoroamines, and fluoromethylated oxygenated heterocycles could be prepared in very good yields through a single synthetic operation. The scalability of the reaction and its application to complex molecular architectures (e.g., steroids) are documented.
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Affiliation(s)
- Giovanna Parisi
- Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" , Via E. Orabona 4, 70125 Bari, Italy.,Department of Pharmaceutical Chemistry, University of Vienna , Althanstrasse 14, 1090 Vienna, Austria
| | - Marco Colella
- Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" , Via E. Orabona 4, 70125 Bari, Italy
| | - Serena Monticelli
- Department of Pharmaceutical Chemistry, University of Vienna , Althanstrasse 14, 1090 Vienna, Austria
| | | | - Wolfgang Holzer
- Department of Pharmaceutical Chemistry, University of Vienna , Althanstrasse 14, 1090 Vienna, Austria
| | - Thierry Langer
- Department of Pharmaceutical Chemistry, University of Vienna , Althanstrasse 14, 1090 Vienna, Austria
| | - Leonardo Degennaro
- Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" , Via E. Orabona 4, 70125 Bari, Italy
| | - Vittorio Pace
- Department of Pharmaceutical Chemistry, University of Vienna , Althanstrasse 14, 1090 Vienna, Austria
| | - Renzo Luisi
- Department of Pharmacy - Drug Sciences, University of Bari "A. Moro" , Via E. Orabona 4, 70125 Bari, Italy
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33
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Choudhury AR, Manna MS, Mukherjee S. Nitro-enabled catalytic enantioselective formal umpolung alkenylation of β-ketoesters. Chem Sci 2017; 8:6686-6690. [PMID: 28989696 PMCID: PMC5625255 DOI: 10.1039/c7sc02232h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 07/30/2017] [Indexed: 01/10/2023] Open
Abstract
A formal umpolung strategy is presented for the enantioselective installation of an alkenyl group with a terminal double bond at a tertiary center. This one-pot two-step sequence relies on the unique features of the nitro group, which after inverting the polarity of the alkenylating agent toward the desired bond formation, itself serves as a leaving group. The application of this protocol to cyclic β-ketoesters results in densely functionalized products, bearing an all-carbon quaternary stereocenter including an alkenyl substituent with a terminal double bond, in high yields with excellent enantioselectivities.
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Affiliation(s)
- Abhijnan Ray Choudhury
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
| | - Madhu Sudan Manna
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
| | - Santanu Mukherjee
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560 012 , India . ; ; Tel: +91-80-2293-2850
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34
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Abstract
Using a commercially available Umemoto's reagent, the metal-free trifluoromethylation of nitroalkanes is now possible. This method provides a general, high-yielding synthesis of α-(trifluoromethyl)nitroalkanes. The quaternary α-(trifluoromethyl)nitroalkanes obtained from this transformation can be elaborated to a variety of complex nitrogen-containing molecules, including α-(trifluoromethyl)amines.
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Affiliation(s)
| | | | - Donald A. Watson
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716 United States
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35
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Motornov VA, Muzalevskiy VM, Tabolin AA, Novikov RA, Nelyubina YV, Nenajdenko VG, Ioffe SL. Radical Nitration-Debromination of α-Bromo-α-fluoroalkenes as a Stereoselective Route to Aromatic α-Fluoronitroalkenes-Functionalized Fluorinated Building Blocks for Organic Synthesis. J Org Chem 2017; 82:5274-5284. [PMID: 28448146 DOI: 10.1021/acs.joc.7b00578] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A new highly efficient method for the synthesis of 2-fluoro-2-nitrostyrenes was described. Radical nitration of readily available 2-bromo-2-fluorostyrenes with Fe(NO3)3·9H2O resulted in the formation of the corresponding α-fluoro-nitroalkenes in isolated yields up to 92%. The reaction proceeded as a nitration-debromination sequence to highly stereoselectively give α-fluoro-nitroalkenes as Z-isomers only. The broad scope of this method was demonstrated. Prepared monofluorinated alkenes were shown to be versatile building blocks for the synthesis of various fluorinated products.
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Affiliation(s)
- Vladimir A Motornov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prosp. 47, Moscow 119991, Russian Federation.,Higher Chemical College, D. I. Mendeleev University of Chemical Technology of Russia , Miusskaya sq. 9, Moscow 125047, Russian Federation
| | - Vasiliy M Muzalevskiy
- Department of Chemistry, M. V. Lomonosov Moscow State University , Leninskie Gory 1, Moscow 119992, Russian Federation
| | - Andrey A Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prosp. 47, Moscow 119991, Russian Federation
| | - Roman A Novikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prosp. 47, Moscow 119991, Russian Federation.,V. A. Engelhardt Institute of Molecular Biology, Russian Academy of Sciences , Vavilov str. 32, Moscow 119991, Russian Federation
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov str. 28, Moscow 119991, Russian Federation
| | - Valentine G Nenajdenko
- Department of Chemistry, M. V. Lomonosov Moscow State University , Leninskie Gory 1, Moscow 119992, Russian Federation
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prosp. 47, Moscow 119991, Russian Federation
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36
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Wu ZJ, Xu HC. Synthesis of C3-Fluorinated Oxindoles through Reagent-Free Cross-Dehydrogenative Coupling. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701329] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zheng-Jian Wu
- i ChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces; Key Laboratory of Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
| | - Hai-Chao Xu
- i ChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces; Key Laboratory of Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
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37
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Reddy MK, Mallik S, Ramakrishna I, Baidya M. Nitrosocarbonyl–Henry and Denitration Cascade: Synthesis of α-Ketoamides and α-Keto Oximes. Org Lett 2017; 19:1694-1697. [DOI: 10.1021/acs.orglett.7b00482] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mallu Kesava Reddy
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Sumitava Mallik
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Isai Ramakrishna
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
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Wu ZJ, Xu HC. Synthesis of C3-Fluorinated Oxindoles through Reagent-Free Cross-Dehydrogenative Coupling. Angew Chem Int Ed Engl 2017; 56:4734-4738. [DOI: 10.1002/anie.201701329] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Zheng-Jian Wu
- i ChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces; Key Laboratory of Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
| | - Hai-Chao Xu
- i ChEM, State Key Laboratory of Physical Chemistry of Solid Surfaces; Key Laboratory of Chemical Biology of Fujian Province and College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 P.R. China
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