1
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Guo Q, Jiang Y, Zhu R, Yang W, Hu P. Electrochemical Azo-free Mitsunobu-type Reaction. Angew Chem Int Ed Engl 2024; 63:e202402878. [PMID: 38466140 DOI: 10.1002/anie.202402878] [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: 02/08/2024] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 03/12/2024]
Abstract
The classic chemical Mitsunobu reaction suffers from the need of excess alcohol activation reagents and the generation of significant by-products. Efforts to overcome these limitations have resulted in numerous creative solutions, but the substrate scope of these catalytic processes remains limited. Here we report an electrochemical Mitsunobu-type reaction, which features azo-free alcohol activation and broad substrate scope. This user-friendly technology allows a vast collection of heterocycles as the nucleophile, which can couple with a series of chiral cyclic and acyclic alcohols in moderate to high yields and excellent ee's. This practical reaction is scalable, chemoselective, uses simple Electrasyn setup with inexpensive electrodes and requires no precaution to exclude air and moisture. The synthetic utility is further demonstrated on the structural modification of diverse bioactive natural products and pharmaceutical derivatives and its straightforward application in a multiple-step synthesis of a drug candidate.
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Affiliation(s)
- Quanping Guo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Yangye Jiang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Rongjin Zhu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Wenhui Yang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Pengfei Hu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
- Institute of Natural Sciences Westlake Institute for Advanced Study, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
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2
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Odoh AS, Keeler C, Kim B. SuFEx-Enabled Direct Deoxy-Diversification of Alcohols. Org Lett 2024; 26:4013-4017. [PMID: 38691850 DOI: 10.1021/acs.orglett.4c01016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
We introduce a new use of sulfonyl fluoride as a bifunctional reagent that facilitates the one-step deoxy-diversification of complex alcohol libraries. Our reaction design features a Sulfur(VI) Fluoride Exchange (SuFEx) mediated activation of alcohols and fluoride-induced activation of silicon-bound nucleophiles. This method enables the direct conversion of alcoholic C-O bonds in complex molecules into diverse analogues via C-C, C-N, C-Cl, and C-Br bond formation while suppressing any elimination side-products.
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Affiliation(s)
- Amaechi Shedrack Odoh
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Courtney Keeler
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Byoungmoo Kim
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
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3
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Zwick P, Troncossi A, Borsley S, Vitorica-Yrezabal IJ, Leigh DA. Stepwise Operation of a Molecular Rotary Motor Driven by an Appel Reaction. J Am Chem Soc 2024; 146:4467-4472. [PMID: 38319727 PMCID: PMC10885133 DOI: 10.1021/jacs.3c10266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
To date, only a small number of chemistries and chemical fueling strategies have been successfully used to operate artificial molecular motors. Here, we report the 360° directionally biased rotation of phenyl groups about a C-C bond, driven by a stepwise Appel reaction sequence. The motor molecule consists of a biaryl-embedded phosphine oxide and phenol, in which full rotation around the biaryl bond is blocked by the P-O oxygen atom on the rotor being too bulky to pass the oxygen atom on the stator. Treatment with SOCl2 forms a cyclic oxyphosphonium salt (removing the oxygen atom of the phosphine oxide), temporarily linking the rotor with the stator. Conformational exchange via ring flipping then allows the rotor and stator to twist back and forth past the previous limit of rotation. Subsequently, the ring opening of the tethered intermediate with a chiral alcohol occurs preferentially through a nucleophilic attack on one face. Thus, the original phosphine oxide is reformed with net directional rotation about the biaryl bond over the course of the two-step reaction sequence. Each repetition of SOCl2-chiral alcohol additions generates another directionally biased rotation. Using the same reaction sequence on a derivative of the motor molecule that forms atropisomers rather than fully rotating 360° results in enantioenrichment, suggesting that, on average, the motor molecule rotates in the "wrong" direction once every three fueling cycles. The interconversion of phosphine oxides and cyclic oxyphosphonium groups to form temporary tethers that enable a rotational barrier to be overcome directionally adds to the strategies available for generating chemically fueled kinetic asymmetry in molecular systems.
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Affiliation(s)
- Patrick Zwick
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Axel Troncossi
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Stefan Borsley
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | | | - David A Leigh
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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4
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Liang C, Zheng K, Ding Y, Gao J, Wang Z, Cheng J. Pyridine-catalyzed ring-opening reaction of cyclopropenone with bromomethyl carbonyl compounds toward furan-2(5 H)-ones. Chem Commun (Camb) 2024. [PMID: 38258845 DOI: 10.1039/d3cc05888c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
We developed a pyridine-catalyzed annulation of diaryl cyclopropenone with bromomethyl carbonyl compounds leading to 5-carbonyl furan-2(5H)-ones. Pyridinium, derived from the reaction of bromomethyl carbonyl and pyridine, triggered the reaction by the inter-molecular Michael addition to cyclopropenone. This procedure was sensitive neither to air nor moisture and proceeded at room temperature with broad substrate scopes and good functional group tolerance in moderate-to-good yields. As such, it represents a facile and practical pathway leading to 5-carbonyl furan-2(5H)-one derivatives.
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Affiliation(s)
- Chen Liang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Kui Zheng
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Yifang Ding
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Junhang Gao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Zhenlian Wang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Jiang Cheng
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
- Lab of Biohealth Materials and Chemistry of Wenzhou, Wenzhou University, Wenzhou 325035, P. R. China
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5
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Liang C, Chen Z, Hu X, Yu S, Wang Z, Cheng J. Phosphine-catalyzed ring-opening reaction of cyclopropenones with dicarbonyl compounds. Org Biomol Chem 2023; 21:7712-7716. [PMID: 37702379 DOI: 10.1039/d3ob01409f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
We developed a phosphine-catalyzed ring-opening reaction of cyclopropenones with dicarbonyl compounds as C-nucleophiles, leading to 1,3,3'-tricarbonyl compounds. During this neutral procedure, C-acylation is more dominant than O-acylation. This transition-metal free procedure features mild and neutral reaction conditions with good atom economy. As such, it represents a facile pathway to access 1,3,3'-tricarbonyl derivatives.
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Affiliation(s)
- Chen Liang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Zhibin Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Xinyue Hu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Shengxia Yu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Zhenlian Wang
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Jiang Cheng
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
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6
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Guan W, Chang Y, Lin S. Electrochemically Driven Deoxygenative Borylation of Alcohols and Carbonyl Compounds. J Am Chem Soc 2023; 145:16966-16972. [PMID: 37499221 PMCID: PMC10624253 DOI: 10.1021/jacs.3c03418] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
We present a new, unified approach for the transformation of benzylic and allylic alcohols, aldehydes, and ketones into boronic esters under electroreductive conditions. Key to our strategy is the use of readily available pinacolborane, which serves both as an activator and an electrophile by first generating a redox-active trialkylborate species and then delivering the desired deoxygenatively borylated product. This strategy is applicable to a variety of substrates and can be employed for the late-stage functionalization of complex molecules.
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Affiliation(s)
- Weiyang Guan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14850, USA
| | - Yejin Chang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14850, USA
| | - Song Lin
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14850, USA
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7
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Sun G, Li J, Liu X, Liu Y, Wen X, Sun H, Xu QL. Organophosphorus-Catalyzed "Dual-Substrate Deoxygenation" Strategy for C-S Bond Formation from Sulfonyl Chlorides and Alcohols/Acids. J Org Chem 2023. [PMID: 37296496 DOI: 10.1021/acs.joc.3c00532] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A green method to construct C-S bonds using sulfonyl chlorides and alcohols/acids via a PIII/PV═O catalytic system is reported. The organophosphorus-catalyzed umpolung reaction promotes us to propose the "dual-substrate deoxygenation" strategy. Herein, we adopt the "dual-substrate deoxygenation" strategy, which achieves the deoxygenation of sulfonyl chlorides and alcohols/acids to synthesize thioethers/thioesters driven by PIII/PV═O redox cycling. The catalytic method represents an operationally simple approach using stable phosphine oxide as a precatalyst and shows broad functional group tolerance. The potential application of this protocol is demonstrated by the late-stage diversification of drug analogues.
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Affiliation(s)
- Gang Sun
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Jing Li
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Xin Liu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Yiting Liu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Xiaoan Wen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Hongbin Sun
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Qing-Long Xu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
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8
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Wang Y, Xu J, Pan Y, Wang Y. Recent advances in electrochemical deoxygenation reactions of organic compounds. Org Biomol Chem 2023; 21:1121-1133. [PMID: 36655598 DOI: 10.1039/d2ob01817a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
As naturally abundant and recyclable industrial feedstock, alcohols and carboxylic acids have drawn tremendous attention in medicinal chemistry and polymer chemistry. The selective C-O cleavage of the hydroxyl group represents an appealing strategy to deliver alkyl and carbonyl moieties into organic molecules. Classical examples of hydroxyl activation include the Appel reaction, Mitsunobu reaction, and Barton-McCombie deoxygenation. However, these early approaches still require large amounts of oxidants or reductants, and suffer from harsh conditions and low atom economy. Electrosynthesis has proven to be an effective and mild way of the modern chemical industry, avoiding the use of chemical oxidants/reductants through the action of an electric current. In this review, we have summarized the recent advances in electrochemical deoxygenation reactions and categorized the deoxygenation methods by different functionalities.
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Affiliation(s)
- Yang Wang
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Jia Xu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
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9
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Xie C, Kim J, Mai BK, Cao S, Ye R, Wang XY, Liu P, Kwon O. Enantioselective Synthesis of Quaternary Oxindoles: Desymmetrizing Staudinger-Aza-Wittig Reaction Enabled by a Bespoke HypPhos Oxide Catalyst. J Am Chem Soc 2022; 144:21318-21327. [PMID: 36375169 PMCID: PMC10746329 DOI: 10.1021/jacs.2c09421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper describes a catalytic asymmetric Staudinger-aza-Wittig reaction of (o-azidoaryl)malonates, allowing access to chiral quaternary oxindoles through phosphine oxide catalysis. We designed a novel HypPhos oxide catalyst to enable the desymmetrizing Staudinger-aza-Wittig reaction through the PIII/PV═O redox cycle in the presence of a silane reductant and an IrI-based Lewis acid. The reaction occurs under mild conditions, with good functional group tolerance, a wide substrate scope, and excellent enantioselectivity. Density functional theory revealed that the enantioselectivity in the desymmetrizing reaction arose from the cooperative effects of the IrI species and the HypPhos catalyst. The utility of this methodology is demonstrated by the (formal) syntheses of seven alkaloid targets: (-)-gliocladin C, (-)-coerulescine, (-)-horsfiline, (+)-deoxyeseroline, (+)-esermethole, (+)-physostigmine, and (+)-physovenine.
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Affiliation(s)
- Changmin Xie
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Jacob Kim
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Binh Khanh Mai
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Shixuan Cao
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Rong Ye
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Xin-Yi Wang
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
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10
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Pei M, Tian A, Yang Q, Huang N, Wang L, Li D. Organophosphorus catalytic reaction based on reduction of phosphine oxide. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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11
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Sun K, Xu Z, Ramadoss V, Tian L, Wang Y. Electrochemical deoxygenative reduction of ketones. Chem Commun (Camb) 2022; 58:11155-11158. [PMID: 36106949 DOI: 10.1039/d2cc04548f] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochemical reduction via paired electrolysis has been used to achieve deoxygenative reduction of ketones. As a result of the complexing of ketones with the triphenylphosphine radical cation generated by anodic oxidation, the reduction of carbonyl groups occurs readily. Through spontaneous β-scission of phosphoranyl radicals, C-O bonds are cleaved to form benzylic radical intermediates. These radical species are either able to abstract hydrogen from MeCN or undergo reduction at the cathode to give carbanions, upon workup forming reductive hydrogenation of ketones.
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Affiliation(s)
- Kunhui Sun
- Technical Institute of Fluorochemistry (TIF), State Key Laboratory of Materials-Oriented Chemical Engineering (MCE), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China.
| | - Zhimin Xu
- Technical Institute of Fluorochemistry (TIF), State Key Laboratory of Materials-Oriented Chemical Engineering (MCE), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China.
| | - Velayudham Ramadoss
- Technical Institute of Fluorochemistry (TIF), State Key Laboratory of Materials-Oriented Chemical Engineering (MCE), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China.
| | - Lifang Tian
- Technical Institute of Fluorochemistry (TIF), State Key Laboratory of Materials-Oriented Chemical Engineering (MCE), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China.
| | - Yahui Wang
- Technical Institute of Fluorochemistry (TIF), State Key Laboratory of Materials-Oriented Chemical Engineering (MCE), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China.
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12
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Hergueta AR. Easy Removal of Triphenylphosphine Oxide from Reaction Mixtures by Precipitation with CaBr 2. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Lin J, Zhu Y, Cai W, Huang Y. Phosphine-Mediated Sequential [2+4]/[2+3] Annulation to Construct Pyrroloquinolines. Org Lett 2022; 24:1593-1597. [PMID: 35179034 DOI: 10.1021/acs.orglett.1c04388] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A domino [2+4]/[2+3] sequential annulation reaction of MBH carbonates with N-unprotected indoles has been developed to provide various pyrroloquinoline derivatives in ≤94% yield and 20:1 dr. The reaction could be either mediated by stoichiometric PCy3 or catalyzed by R3PO via PIII/PV═O redox cycling in the presence of phenylsilane. This method assembles polycyclic 1,7-fused indoles in one step diastereoselectively.
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Affiliation(s)
- Junhui Lin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yannan Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wei Cai
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - You Huang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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14
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Hu H, Wu X, Qiu Y, Wang C, Wang W, Yue G, Wang H, Feng J, Wang G, Ni H, Zou P. Arylboronic Acid Catalyzed Dehydrative Mono-/Dialkylation Reactions of β-Ketoacids and Alcohols. Org Lett 2022; 24:832-836. [PMID: 35043629 DOI: 10.1021/acs.orglett.1c04050] [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
The dehydrative mono-/dialkylation reactions of alcohols and β-ketoacids were realized under arylboronic acid catalysis, furnishing a series of β-aryl ketones and β-ketoesters in yields of 15-99%, with CO2 and H2O being the byproducts. In this context, the decarboxylative alkylation reaction occurred to give β-aryl ketones at 50 °C, while the decarboxylation was suppressed to generate dialkylated ester products at 0 °C. A possible catalytic cycle was proposed based on control experiments.
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Affiliation(s)
- Haipeng Hu
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Xin Wu
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Yuqian Qiu
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Cuilin Wang
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Wei Wang
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Guizhou Yue
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Hanguang Wang
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Juhua Feng
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Guangtu Wang
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Hailiang Ni
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
| | - Ping Zou
- College of Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, P.R. China
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15
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Ranga PK, Ahmad F, Singh G, Tyagi A, Vijaya Anand R. Recent advances in the organocatalytic applications of cyclopropene- and cyclopropenium-based small molecules. Org Biomol Chem 2021; 19:9541-9564. [PMID: 34704583 DOI: 10.1039/d1ob01549d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The development of novel small molecule-based catalysts for organic transformations has increased noticeably in the last two decades. A very recent addition to this particular research area is cyclopropene- and cyclopropenium-based catalysts. At one point in time, particularly in the mid-20th century, much attention was focused on the structural aspects and physical properties of cyclopropene-based compounds. However, a paradigm shift was observed in the late 20th century, and the focus shifted to the synthetic utility of these compounds. In fact, a wide range of cyclopropene derivatives have been found serving as valuable synthons for the construction of carbocycles, heterocycles and other useful organic compounds. In the last few years, the catalytic applications of cyclopropene/cyclopropenium-based compounds have been uncovered and many synthetic protocols have been developed using cyclopropene-based compounds as organocatalysts. Therefore, the main objective of this review is to highlight recent developments in the catalytic applications of cyclopropene-based small molecules in different areas of organocatalysis such as phase-transfer catalysis (PTC), Brønsted base catalysis, hydrogen-bond donor catalysis, nucleophilic carbene catalysis, and electrophotocatalysis developed within the past two decades.
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Affiliation(s)
- Pavit K Ranga
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S.A.S Nagar, Manauli (PO), Punjab - 140306, India.
| | - Feroz Ahmad
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S.A.S Nagar, Manauli (PO), Punjab - 140306, India.
| | - Gurdeep Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S.A.S Nagar, Manauli (PO), Punjab - 140306, India.
| | - Akshi Tyagi
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S.A.S Nagar, Manauli (PO), Punjab - 140306, India.
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S.A.S Nagar, Manauli (PO), Punjab - 140306, India.
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16
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Zhang SX, Ding Y, Wang JJ, Shen C, Zhou X, Chu XQ, Ma M, Shen ZL. Titanium(IV)-Mediated Ring-Opening/Dehydroxylative Cross-Coupling of Diaryl-Substituted Methanols with Cyclopropanol Derivatives. J Org Chem 2021; 86:15753-15760. [PMID: 34628862 DOI: 10.1021/acs.joc.1c01790] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A titanium(IV)-mediated ring-opening/dehydroxylative cross-coupling of diaryl-substituted methanols with a cyclopropanol derivative was developed. The reactions proceeded efficiently to provide synthetically useful γ,γ-diaryl esters in moderate to good yields, which could be applied to the functionalization of complex molecules derived from bioactive fenofibrate and isoxepac and the synthesis of a precursor of Zoloft.
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Affiliation(s)
- Si-Xuan Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan Ding
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jun-Jie Wang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chuanji Shen
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, China
| | - Xiaocong Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, China
| | - Xue-Qiang Chu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Mengtao Ma
- College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Zhi-Liang Shen
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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17
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Zheng Y, Zhao Y, Tao S, Li X, Cheng X, Jiang G, Wan X. Green Esterification of Carboxylic Acids Promoted by
tert
‐Butyl Nitrite. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100326] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yonggao Zheng
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University 215123 Suzhou P. R. China
| | - Yanwei Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University 215123 Suzhou P. R. China
| | - Suyan Tao
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University 215123 Suzhou P. R. China
| | - Xingxing Li
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University 215123 Suzhou P. R. China
| | - Xionglve Cheng
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University 215123 Suzhou P. R. China
| | - Gangzhong Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University 215123 Suzhou P. R. China
| | - Xiaobing Wan
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials Science Soochow University 215123 Suzhou P. R. China
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18
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Merad J, Matyašovský J, Stopka T, Brutiu BR, Pinto A, Drescher M, Maulide N. Stable and easily available sulfide surrogates allow a stereoselective activation of alcohols. Chem Sci 2021; 12:7770-7774. [PMID: 34168830 PMCID: PMC8188487 DOI: 10.1039/d1sc01602d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Isothiouronium salts are easily accessible and stable compounds. Herein, we report their use as versatile deoxasulfenylating agents enabling a stereoselective, thiol-free protocol for synthesis of thioethers from alcohols. The method is simple, scalable and tolerates a broad range of functional groups otherwise incompatible with other methods. Late-stage modification of several pharmaceuticals provides access to multiple analogues of biologically relevant molecules. Performed experiments give insight into the reaction mechanism. A simple and scalable method for stereoselective synthesis of thioethers directly from alcohols using isothiouronium salts is presented. The utility of this thiol-free reaction was exemplified by late-stage modification of complex molecules.![]()
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Affiliation(s)
- Jérémy Merad
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at.,Univ. Lyon, Université Claude Bernard Lyon 1, CNRS CPE Lyon, INSA Lyon, ICBMS, UMR 5246 Bât. Lederer 1 rue Victor Grignard 69622 Villeurbanne France
| | - Ján Matyašovský
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Tobias Stopka
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Bogdan R Brutiu
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Alexandre Pinto
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Martina Drescher
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Nuno Maulide
- Department of Organic Chemistry, University of Vienna Währinger Straße 38 1090 Vienna Austria http://maulide.univie.ac.at
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19
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Xie C, Smaligo AJ, Song XR, Kwon O. Phosphorus-Based Catalysis. ACS CENTRAL SCIENCE 2021; 7:536-558. [PMID: 34056085 PMCID: PMC8155461 DOI: 10.1021/acscentsci.0c01493] [Citation(s) in RCA: 116] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Indexed: 05/08/2023]
Abstract
Phosphorus-based organocatalysis encompasses several subfields that have undergone rapid growth in recent years. This Outlook gives an overview of its various aspects. In particular, we highlight key advances in three topics: nucleophilic phosphine catalysis, organophosphorus catalysis to bypass phosphine oxide waste, and organophosphorus compound-mediated single electron transfer processes. We briefly summarize five additional topics: chiral phosphoric acid catalysis, phosphine oxide Lewis base catalysis, iminophosphorane super base catalysis, phosphonium salt phase transfer catalysis, and frustrated Lewis pair catalysis. Although it is not catalytic in nature, we also discuss novel discoveries that are emerging in phosphorus(V) ligand coupling. We conclude with some ideas about the future of organophosphorus catalysis.
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Affiliation(s)
- Changmin Xie
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | - Andrew J. Smaligo
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | | | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
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20
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Ranga PK, Ahmad F, Nager P, Rana PS, Vijaya Anand R. Bis(amino)cyclopropenium Ion as a Hydrogen-Bond Donor Catalyst for 1,6-Conjugate Addition Reactions. J Org Chem 2021; 86:4994-5010. [PMID: 33721500 DOI: 10.1021/acs.joc.0c02940] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The catalytic application of the bis(amino)cyclopropenium ion has been investigated in conjugate addition reactions. The hydrogen atom, which is attached to the cyclopropene ring of bis(amino)cyclopropenium salts, is moderately acidic and can potentially serve as a hydrogen-bond donor catalyst in some organic transformations. This hypothesis has been successfully realized in the 1,6-conjugate addition reactions of p-quinone methides with various nucleophiles such as indole, 2-naphthol, thiols, phenols, and so forth. The spectroscopic studies (NMR and UV-vis) as well as the deuterium isotope labeling studies clearly revealed that the hydrogen atom (C-H) that is present in the cyclopropene ring of the catalyst is indeed solely responsible for catalyzing these transformations. In addition, these studies also strongly indicate that the C-H hydrogen of the cyclopropene ring activates the carbonyl group of the p-quinone methide through hydrogen bonding.
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Affiliation(s)
- Pavit Kumar Ranga
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
| | - Feroz Ahmad
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
| | - Prashant Nager
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
| | - Prabhat Singh Rana
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli (P.O.), S. A. S. Nagar, Punjab 140306, India
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21
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Phenol alkylation under phase transfer catalysis conditions: Insights on the mechanism and kinetics from computations. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Epifanov M, Mo JY, Dubois R, Yu H, Sammis GM. One-Pot Deoxygenation and Substitution of Alcohols Mediated by Sulfuryl Fluoride. J Org Chem 2021; 86:3768-3777. [PMID: 33567820 DOI: 10.1021/acs.joc.0c02557] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Sulfuryl fluoride is a valuable reagent for the one-pot activation and derivatization of aliphatic alcohols, but the highly reactive alkyl fluorosulfate intermediates limit both the types of reactions that can be accessed as well as the scope. Herein, we report the SO2F2-mediated alcohol substitution and deoxygenation method that relies on the conversion of fluorosulfates to alkyl halide intermediates. This strategy allows the expansion of SO2F2-mediated one-pot processes to include radical reactions, where the alkyl halides can also be exploited in the one-pot deoxygenation of primary alcohols under mild conditions (52-95% yield). This strategy can also enhance the scope of substitutions to nucleophiles that are previously incompatible with one-pot SO2F2-mediated alcohol activation and enables substitution of primary and secondary alcohols in 54-95% yield. Chiral secondary alcohols undergo a highly stereospecific (90-98% ee) double nucleophilic displacement with an overall retention of configuration.
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Affiliation(s)
- Maxim Epifanov
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jia Yi Mo
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Rudy Dubois
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Hao Yu
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Glenn M Sammis
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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23
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Chen Y, He R, Song H, Yu G, Li C, Liu Y, Wang Q. Two‐Step Protocol for Iodotrimethylsilane‐Mediated Deoxy‐Functionalization of Alcohols. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuming Chen
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
| | - Ru He
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
| | - Guoqing Yu
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
- Shandong Boyuan Pharmaceutical & Chemical Co., Ltd 262725 Shouguang People's Republic of China
| | - Chenglin Li
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
- Shandong Boyuan Pharmaceutical & Chemical Co., Ltd 262725 Shouguang People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University 300071 Tianjin People's Republic of China
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24
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Zheng L, Sun C, Xu W, Dushkin AV, Polyakov N, Su W, Yu J. Mechanically induced solvent-free esterification method at room temperature. RSC Adv 2021; 11:5080-5085. [PMID: 35424454 PMCID: PMC8694552 DOI: 10.1039/d0ra09437d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/12/2021] [Indexed: 01/23/2023] Open
Abstract
Herein, we describe two novel strategies for the synthesis of esters, as achieved under high-speed ball-milling (HSBM) conditions at room temperature. In the presence of I2 and KH2PO2, the reactions afford the desired esterification derivatives in 45% to 91% yields within 20 min of grinding. Meanwhile, using KI and P(OEt)3, esterification products can be obtained in 24% to 85% yields after 60 min of grinding. In addition, the I2/KH2PO2 protocol was successfully extended to the late-stage diversification of natural products showing the robustness of this useful approach. Further application of this method in the synthesis of inositol nicotinate was also discussed.
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Affiliation(s)
- Lei Zheng
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Chen Sun
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Wenhao Xu
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Alexandr V Dushkin
- Institute of Solid State Chemistry and Mechanochemistry Novosibirsk Russia
| | - Nikolay Polyakov
- Institute of Solid State Chemistry and Mechanochemistry Novosibirsk Russia
| | - Weike Su
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology Hangzhou 310014 P. R. China
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Jingbo Yu
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology Hangzhou 310014 P. R. China
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25
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Estopiñá‐Durán S, Taylor JE. Brønsted Acid-Catalysed Dehydrative Substitution Reactions of Alcohols. Chemistry 2021; 27:106-120. [PMID: 32491202 PMCID: PMC7820959 DOI: 10.1002/chem.202002106] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Indexed: 12/13/2022]
Abstract
The direct, catalytic dehydrative substitution of alcohols is a challenging, yet highly desirable process in the development of more sustainable approaches to organic chemistry. This review outlines recent advances in Brønsted acid-catalysed dehydrative substitution reactions for C-C, C-O, C-N and C-S bond formation. The wide range of processes that are now accessible using simple alcohols as the formal electrophile are highlighted, while current limitations and therefore possible future directions for research are also discussed.
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Affiliation(s)
- Susana Estopiñá‐Durán
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUK
- EaStCHEMSchool of ChemistryUniversity of St AndrewsNorth HaughSt AndrewsKY16 9STUK
| | - James E. Taylor
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUK
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26
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Zoller B, Stach T, Huy PH. Lewis Base Catalysis Enables the Activation of Alcohols by means of Chloroformates as Phosgene Substitutes. ChemCatChem 2020. [DOI: 10.1002/cctc.202001175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ben Zoller
- Saarland University Organic Chemistry P. O. Box 151150 66041 Saarbrücken Germany
- Current address Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) University Campus E8.1, room 2.29 66123 Saarbrücken Germany
| | - Tanja Stach
- Saarland University Organic Chemistry P. O. Box 151150 66041 Saarbrücken Germany
- Current address: Endotherm GmbH Science Park 2 66123 Saarbrücken Germany
| | - Peter H. Huy
- Saarland University Organic Chemistry P. O. Box 151150 66041 Saarbrücken Germany
- Rostock University Institute for Chemistry Albert-Einstein-Str. 3A 18059 Rostock Germany
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27
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Kohlmeyer C, Schäfer A, Huy PH, Hilt G. Formamide-Catalyzed Nucleophilic Substitutions: Mechanistic Insight and Rationalization of Catalytic Activity. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03348] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Corinna Kohlmeyer
- Oldenburg University, Institute of Chemistry, Carl-von-Ossietzky-Str. 9-11, 26111 Oldenburg, Germany
| | - André Schäfer
- Saarland University, Faculty of Natural Sciences and Technology, Department of Chemistry, 66123 Saarbruecken, Germany
| | - Peter H. Huy
- Rostock University, Institute for Chemistry, Albert-Einstein-Straße 3A, 18059 Rostock, Germany
| | - Gerhard Hilt
- Oldenburg University, Institute of Chemistry, Carl-von-Ossietzky-Str. 9-11, 26111 Oldenburg, Germany
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28
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Shao X, Zheng Y, Ramadoss V, Tian L, Wang Y. Recent advances in P III-assisted deoxygenative reactions under photochemical or electrochemical conditions. Org Biomol Chem 2020; 18:5994-6005. [PMID: 32692327 DOI: 10.1039/d0ob01083a] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The nucleophilic substitution reactions of hydroxyl groups are one of the most fundamental and widely spread transformations in organic chemistry. Among them, PIII-mediated deoxygenative nucleophilic substitution reactions, such as the Mitsunobu reaction, are frequently used strategies and often require stoichiometric oxidants to activate PIII reagents to induce the desired reactions. It has been illustrated that PIII reagents can be oxidized into the corresponding radical cations through single-electron oxidation by photocatalysis or electro-oxidation. These phosphine radical cations can react with alcohols or carboxylic acids to form the corresponding alkoxyphosphonium or acyloxyphosphonium intermediates, which are very reactive and easily get decomposed. The release of tri-substituted phosphine oxides as a driving force triggers the following nucleophilic substitution. This strategy does not require the use of stoichiometric oxidants and it eludes safety and stability problems. In this review, we summarise the recent advances and discoveries in PIII-assisted direct deoxygenative reactions under photochemical or electrochemical conditions.
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Affiliation(s)
- Xiaoqing Shao
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Yue Zheng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Velayudham Ramadoss
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Lifang Tian
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Yahui Wang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
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29
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Zoller B, Zapp J, Huy PH. Rapid Organocatalytic Formation of Carbon Monoxide: Application towards Carbonylative Cross Couplings. Chemistry 2020; 26:9632-9638. [PMID: 32516509 PMCID: PMC7497008 DOI: 10.1002/chem.202002746] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Indexed: 12/15/2022]
Abstract
Herein, the first organocatalytic method for the transformation of non‐derivatized formic acid into carbon monoxide (CO) is introduced. Formylpyrrolidine (FPyr) and trichlorotriazine (TCT), which is a cost‐efficient commodity chemical, enable this decarbonylation. Utilization of dimethylformamide (DMF) as solvent and catalyst even allows for a rapid CO generation at room temperature. Application towards four different carbonylative cross coupling protocols demonstrates the high synthetic utility and versatility of the new approach. Remarkably, this also comprehends a carbonylative Sonogashira reaction at room temperature employing intrinsically difficult electron‐deficient aryl iodides. Commercial 13C‐enriched formic acid facilitates the production of radiolabeled compounds as exemplified by the pharmaceutical Moclobemide. Finally, comparative experiments verified that the present method is highly superior to other protocols for the activation of carboxylic acids.
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Affiliation(s)
- Ben Zoller
- Organic Chemistry, Saarland University, P. O. Box 151150, 66041, Saarbrücken, Germany
| | - Josef Zapp
- Institute of Pharmaceutical Biology, Saarland University, Campus C 2.3, 66123, Saarbrücken, Germany
| | - Peter H Huy
- Organic Chemistry, Saarland University, P. O. Box 151150, 66041, Saarbrücken, Germany
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30
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Mo JY, Epifanov M, Hodgson JW, Dubois R, Sammis GM. One‐Pot Substitution of Aliphatic Alcohols Mediated by Sulfuryl Fluoride. Chemistry 2020; 26:4958-4962. [DOI: 10.1002/chem.202000721] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Jia Yi Mo
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Maxim Epifanov
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Jack W. Hodgson
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Rudy Dubois
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
| | - Glenn M. Sammis
- Department of ChemistryUniversity of British Columbia 2036 Main Mall Vancouver, British Columbia V6T 1Z1 Canada
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31
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Lanke V, Marek I. Nucleophilic Substitution at Quaternary Carbon Stereocenters. J Am Chem Soc 2020; 142:5543-5548. [DOI: 10.1021/jacs.0c01133] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Veeranjaneyulu Lanke
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City 3200009, Haifa, Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Technion City 3200009, Haifa, Israel
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32
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Kirk AM, O'Brien CJ, Krenske EH. Why do silanes reduce electron-rich phosphine oxides faster than electron-poor phosphine oxides? Chem Commun (Camb) 2020; 56:1227-1230. [PMID: 31897455 DOI: 10.1039/c9cc08718d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Organophosphine-mediated reactions that generate P[double bond, length as m-dash]O-bonded byproducts can be transformed into catalytic processes by reducing the R3P[double bond, length as m-dash]O byproduct back to PR3in situ with a silane. DFT calculations explain why the most readily reduced phosphine oxides are those incorporating electron-rich (e.g. alkyl) substituents rather than electron-deficient (e.g. aryl) substituents.
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Affiliation(s)
- Alicia M Kirk
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
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33
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Akkarasamiyo S, Samec JSM. Intermolecular Stereospecific Substitution of Underivatized Enantioenriched Secondary Alcohols by Organocatalysis. Angew Chem Int Ed Engl 2019; 58:17908-17910. [DOI: 10.1002/anie.201911532] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Sunisa Akkarasamiyo
- Laboratory of Medicinal ChemistryChulabhorn Research Institute 54 Kamphaeng Phet 6 Road, Laksi Bangkok 10210 Thailand
| | - Joseph S. M. Samec
- Department of Organic ChemistryStockholm University, Arrheniuslaboratorierna 10691 Stockholm Sweden
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34
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Huy PH. Lewis Base Catalysis Promoted Nucleophilic Substitutions – Recent Advances and Future Directions. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901495] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Peter H. Huy
- Institute for Organic Chemistry Saarland University P. O. Box 151150 66041 Saarbruecken Germany
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35
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Akkarasamiyo S, Samec JSM. Intermolekulare stereospezifische Substitution von underivatisierten enantiomerenangereicherten sekundären Alkoholen durch Organokatalyse. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sunisa Akkarasamiyo
- Laboratory of Medicinal ChemistryChulabhorn Research Institute 54 Kamphaeng Phet 6 Road, Laksi Bangkok 10210 Thailand
| | - Joseph S. M. Samec
- Department of Organic ChemistryStockholm University, Arrheniuslaboratorierna 10691 Stockholm Schweden
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36
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Canestrari D, Cioffi C, Biancofiore I, Lancianesi S, Ghisu L, Ruether M, O'Brien J, Adamo MFA, Ibrahim H. Sulphide as a leaving group: highly stereoselective bromination of alkyl phenyl sulphides. Chem Sci 2019; 10:9042-9050. [PMID: 31827746 PMCID: PMC6889150 DOI: 10.1039/c9sc03560e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 08/07/2019] [Indexed: 12/18/2022] Open
Abstract
A conceptionally novel nucleophilic substitution approach to synthetically important alkyl bromides is presented. Using molecular bromine (Br2), readily available secondary benzyl and tertiary alkyl phenyl sulphides are converted into the corresponding bromides under exceptionally mild, acid- and base-free reaction conditions. This simple transformation allows the isolation of elimination sensitive benzylic β-bromo carbonyl and nitrile compounds in mostly high yields and purities. Remarkably, protic functionalities such as acids and alcohols are tolerated. Enantioenriched benzylic β-sulphido esters, readily prepared by asymmetric sulpha-Michael addition, produce the corresponding inverted bromides with high stereoselectivities, approaching complete enantiospecificity at -40 °C. Significantly, the reported benzylic β-bromo esters can be stored without racemisation for prolonged periods at -20 °C. Their synthetic potential was demonstrated by the one-pot preparation of γ-azido alcohol (S)-5 in 90% ee. NMR studies revealed an initial formation of a sulphide bromine adduct, which in turn is in equilibrium with a postulated dibromosulphurane intermediate that undergoes C-Br bond formation.
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Affiliation(s)
- Daniele Canestrari
- Centre for Synthesis and Chemical Biology (CSCB) , Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland . ;
| | - Caterina Cioffi
- Centre for Synthesis and Chemical Biology (CSCB) , Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland . ;
| | - Ilaria Biancofiore
- Centre for Synthesis and Chemical Biology (CSCB) , Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland . ;
- IRBM Science Park S.p.A , Department of Medicinal Chemistry , Via Pontina, 30.600 , 00071 Pomezia RM , Italy
| | - Stefano Lancianesi
- Centre for Synthesis and Chemical Biology (CSCB) , Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland . ;
| | - Lorenza Ghisu
- Centre for Synthesis and Chemical Biology (CSCB) , Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland . ;
| | - Manuel Ruether
- Trinity Biomedical Sciences Institute , School of Chemistry , The University of Dublin , Trinity College , Dublin 2 , Ireland
| | - John O'Brien
- Trinity Biomedical Sciences Institute , School of Chemistry , The University of Dublin , Trinity College , Dublin 2 , Ireland
| | - Mauro F A Adamo
- Centre for Synthesis and Chemical Biology (CSCB) , Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland . ;
| | - Hasim Ibrahim
- Centre for Synthesis and Chemical Biology (CSCB) , Department of Chemistry , Royal College of Surgeons in Ireland , 123 St. Stephen's Green , Dublin 2 , Ireland . ;
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37
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Taakili R, Duhayon C, Lugan N, Canac Y. Reactivity vs. Stability of Cyclopropenium Substituted Phosphonium Salts. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rachid Taakili
- LCC‐CNRS, CNRS Université de Toulouse 205 route de Narbonne 31077 Toulouse Cedex 4 France
| | - Carine Duhayon
- LCC‐CNRS, CNRS Université de Toulouse 205 route de Narbonne 31077 Toulouse Cedex 4 France
| | - Noël Lugan
- LCC‐CNRS, CNRS Université de Toulouse 205 route de Narbonne 31077 Toulouse Cedex 4 France
| | - Yves Canac
- LCC‐CNRS, CNRS Université de Toulouse 205 route de Narbonne 31077 Toulouse Cedex 4 France
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38
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Fianchini M, O'Brien CJ, Chass GA. Reduction Rate of 1-Phenyl Phospholane 1-Oxide Enhanced by Silanol Byproducts: Comprehensive DFT Study and Kinetic Modeling Linked to Reagent Design. J Org Chem 2019; 84:10579-10592. [PMID: 29812942 DOI: 10.1021/acs.joc.8b00860] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Important stoichiometric transformations like Wittig and Appel reactions have been implemented in a catalytic fashion in the past decade. The phosphine oxide generated in situ can be reintroduced as phosphine into the catalytic cycle using mild and selective silane reagents (redox-driven catalysis). While the field of experimental investigation has been fully expanding in the past decade, theoretical studies are still sparse. In this present work, density functional theory (DFT) has been used to characterize the free energy surfaces of the reduction of 1-phenyl phospholane 1-oxide with four different silanes. Found stationary points have been studied in-depth to highlight mechanistic peculiarities, like the effect of substituents at the silicon center and the parallel and competitive reactivity between the precursor silanes and their semioxidized byproducts. Calculated thermodynamic parameters in combination with "real" values for concentrations have been used in the formulation of rate equations for simple bimolecular and monomolecular steps of the mechanism. The deterministic integration concentrations versus time of such rate equations led to a realistic description of the systems under study and paved the way to strategic and rational design of new silanes with increased reactivity.
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Affiliation(s)
- Mauro Fianchini
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avgda. Països Catalans 16 , 43007 Tarragona , Catalonia , Spain
| | - Christopher J O'Brien
- Department of Chemistry and Biochemistry , The University of Texas at Arlington , Box 19065 , Arlington , Texas 76019 , United States
| | - Gregory A Chass
- School of Biological and Chemical Sciences , Queen Mary University of London , Mile End Road , E1 4NS London , United Kingdom
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39
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Beddoe RH, Andrews KG, Magné V, Cuthbertson JD, Saska J, Shannon-Little AL, Shanahan SE, Sneddon HF, Denton RM. Redox-neutral organocatalytic Mitsunobu reactions. Science 2019; 365:910-914. [DOI: 10.1126/science.aax3353] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 07/09/2019] [Indexed: 11/02/2022]
Abstract
Nucleophilic substitution reactions of alcohols are among the most fundamental and strategically important transformations in organic chemistry. For over half a century, these reactions have been achieved by using stoichiometric, and often hazardous, reagents to activate the otherwise unreactive alcohols. Here, we demonstrate that a specially designed phosphine oxide promotes nucleophilic substitution reactions of primary and secondary alcohols in a redox-neutral catalysis manifold that produces water as the sole by-product. The scope of the catalytic coupling process encompasses a range of acidic pronucleophiles that allow stereospecific construction of carbon-oxygen and carbon-nitrogen bonds.
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40
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Böldl M, Fleischer I. Dehydrative Coupling of Benzylic Alcohols Catalyzed by Brønsted Acid/Lewis Base. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900965] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marlene Böldl
- Institute of Organic Chemistry. Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Ivana Fleischer
- Institute of Organic Chemistry. Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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41
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Huy PH, Mbouhom C. Formamide catalyzed activation of carboxylic acids - versatile and cost-efficient amidation and esterification. Chem Sci 2019; 10:7399-7406. [PMID: 31489162 PMCID: PMC6713870 DOI: 10.1039/c9sc02126d] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 06/16/2019] [Indexed: 01/24/2023] Open
Abstract
Formamide catalysis enables highly cost-efficient amide C–N and ester C–O bond formation through carboxylic acid chlorides as essential intermediates.
A novel, broadly applicable method for amide C–N and ester C–O bond formation is presented based on formylpyrrolidine (FPyr) as a Lewis base catalyst. Herein, trichlorotriazine (TCT), which is the most cost-efficient reagent for OH-group activation, was employed in amounts of ≤40 mol% with respect to the starting material (100 mol%). The new approach is distinguished by excellent cost-efficiency, waste-balance (E-factor down to 3) and scalability (up to >80 g). Moreover, high levels of functional group compatibility, which includes acid-labile acetals and silyl ethers, are demonstrated and even peptide C–N bonds can be formed. In comparison to reported amidation procedures using TCT, yields are considerably improved (for instance from 26 to 91%) and esterification is facilitated for the first time in synthetically useful yields. These significant enhancements are rationalized by activation by means of acid chlorides instead of less electrophilic acid anhydride intermediates.
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Affiliation(s)
- Peter H Huy
- Saarland University , Institute of Organic Chemistry , P. O. Box 151150 , D-66041 Saarbruecken , Germany . https://www.peterhuylab.de/ ;
| | - Christelle Mbouhom
- Saarland University , Institute of Organic Chemistry , P. O. Box 151150 , D-66041 Saarbruecken , Germany . https://www.peterhuylab.de/ ;
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42
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März M, Babor M, Cibulka R. Flavin Catalysis Employing an N(5)-Adduct: an Application in the Aerobic Organocatalytic Mitsunobu Reaction. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900397] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Michal März
- Department of Organic Chemistry; University of Chemistry and Technology; 166 28 Prague 6 Prague, Technická 5 Czech Republic
| | - Martin Babor
- Department of Solid State Chemistry; University of Chemistry and Technology; Technická 5 166 28 Prague 6 Prague Czech Republic
| | - Radek Cibulka
- Department of Organic Chemistry; University of Chemistry and Technology; 166 28 Prague 6 Prague, Technická 5 Czech Republic
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43
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Yang Y, Cai J, Luo G, Tong X, Su Y, Jiang Y, Liu Y, Zheng Y, Zeng J, Li C. Selective activation of 1,2-dichloroethane for access to β-chloroethylarenes enabled by nickel-catalyzed suzuki-type couplings. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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44
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Beddoe RH, Sneddon HF, Denton RM. The catalytic Mitsunobu reaction: a critical analysis of the current state-of-the-art. Org Biomol Chem 2019; 16:7774-7781. [PMID: 30306184 DOI: 10.1039/c8ob01929k] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The Mitsunobu reaction is widely regarded as the pre-eminent method for performing nucleophilic substitutions of alcohols with inversion of configuration. However, its applicability to large-scale synthesis is undermined by the fact that alcohol activation occurs at the expense of two stoichiometric reagents - a phosphine and an azodicarboxylate. The ideal Mitsunobu reaction would be sub-stoichiometric in the phosphine and azodicarboxylate species and employ innocuous terminal oxidants and reductants to achieve recycling. This Review article provides a summary and analysis of recent advances towards the development of such catalytic Mitsunobu reactions.
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Affiliation(s)
- Rhydian H Beddoe
- School of Chemistry, University of Nottingham; GlaxoSmithKline Carbon Neutral Laboratory, 6 Triumph Road, Nottingham, NG7 2GA, UK.
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45
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Estopiñá‐Durán S, Donnelly LJ, Mclean EB, Hockin BM, Slawin AMZ, Taylor JE. Aryl Boronic Acid Catalysed Dehydrative Substitution of Benzylic Alcohols for C−O Bond Formation. Chemistry 2019; 25:3950-3956. [PMID: 30629761 DOI: 10.1002/chem.201806057] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/09/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Susana Estopiñá‐Durán
- EaStCHEMSchool of ChemistryUniversity of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Liam J. Donnelly
- EaStCHEMSchool of ChemistryUniversity of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Euan B. Mclean
- EaStCHEMSchool of ChemistryUniversity of St Andrews North Haugh St Andrews KY16 9ST UK
| | - Bryony M. Hockin
- EaStCHEMSchool of ChemistryUniversity of St Andrews North Haugh St Andrews KY16 9ST UK
| | | | - James E. Taylor
- EaStCHEMSchool of ChemistryUniversity of St Andrews North Haugh St Andrews KY16 9ST UK
- Department of ChemistryUniversity of Bath Claverton Down Bath BA2 7AY UK
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46
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Marcyk PT, Jefferies LR, AbuSalim DI, Pink M, Baik M, Cook SP. Stereoinversion of Unactivated Alcohols by Tethered Sulfonamides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812894] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Paul T. Marcyk
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Latisha R. Jefferies
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Deyaa I. AbuSalim
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Maren Pink
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Mu‐Hyun Baik
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Silas P. Cook
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
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47
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Marcyk PT, Jefferies LR, AbuSalim DI, Pink M, Baik MH, Cook SP. Stereoinversion of Unactivated Alcohols by Tethered Sulfonamides. Angew Chem Int Ed Engl 2019; 58:1727-1731. [PMID: 30536739 DOI: 10.1002/anie.201812894] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 12/07/2018] [Indexed: 12/23/2022]
Abstract
The direct, catalytic substitution of unactivated alcohols remains an undeveloped area of organic synthesis. Moreover, catalytic activation of this difficult electrophile with predictable stereo-outcomes presents an even more formidable challenge. Described herein is a simple iron-based catalyst system which provides the mild, direct conversion of secondary and tertiary alcohols to sulfonamides. Starting from enantioenriched alcohols, the intramolecular variant proceeds with stereoinversion to produce enantioenriched 2- and 2,2-subsituted pyrrolidines and indolines, without prior derivatization of the alcohol or solvolytic conditions.
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Affiliation(s)
- Paul T Marcyk
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Latisha R Jefferies
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Deyaa I AbuSalim
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Maren Pink
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Silas P Cook
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA
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48
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Xu Z, Zheng Y, Wang Z, Shao X, Tian L, Wang Y. Triphenylphosphine-assisted dehydroxylative Csp3–N bond formation via electrochemical oxidation. Chem Commun (Camb) 2019; 55:15089-15092. [DOI: 10.1039/c9cc08622f] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A dehydroxylative Csp3–N coupling by electrochemical oxidation with readily available alcohols as substrates and a wide variety of azoles and amides as N-nucleophiles.
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Affiliation(s)
- Zhimin Xu
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Yue Zheng
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Zhihui Wang
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Xiaoqing Shao
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Lifang Tian
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Yahui Wang
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
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49
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Abstract
Although boronic acids are recognized primarily for their utility as reagents in transition metal-catalyzed transformations, other applications are emerging, including their use as reaction catalysts.
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Affiliation(s)
- Dennis G. Hall
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
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50
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Wang Y, Chen Q, He M, Wang L. Polystyrene-supported phosphine oxide-catalysed Beckmann rearrangement of ketoximes in 1,1,1,3,3,3-hexafluoro-2-propanol. PHOSPHORUS SULFUR 2018. [DOI: 10.1080/10426507.2018.1539489] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yaoyao Wang
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou, P. R. China
| | - Qun Chen
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou, P. R. China
| | - Mingyang He
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou, P. R. China
| | - Liang Wang
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou, P. R. China
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