1
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Humblot A, Chave T, Amaniampong PN, Streiff S, Jérôme F. Sonochemically-Induced Reduction of Alkenes to Alkanes with Ammonia. Angew Chem Int Ed Engl 2022; 61:e202212719. [PMID: 36268788 PMCID: PMC10099763 DOI: 10.1002/anie.202212719] [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: 08/29/2022] [Indexed: 11/06/2022]
Abstract
With the progressive defossilization of our industry, hydrogen (H2 ) has been identified as a central molecule to store renewable electricity. In this context, ammonia (NH3 ) is now rapidly emerging as a promising hydrogen carrier for the future. This game change indirectly impacts the field of fine chemistry where hydrogenation reactions are widely deployed. In particular, the possibility of performing hydrogenation reactions using ammonia directly instead of hydrogen has become highly desirable but it remains a very difficult scientific task, which we address in this communication. Here we show that the N-H bond of NH3 can be cleaved within cavitation bubbles, generated by ultrasonic irradiation at a high frequency, leading to the in situ formation of a diimide, which then induces the hydrogenation of alkenes. Advantageously, this work does not involve any transition metal and releases N2 as a sole co-product.
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Affiliation(s)
- Anaelle Humblot
- Institut de Chimie des Milieux et Matériaux de Poitiers, Université de Poitiers, CNRS, 1 rue Marcel Doré, Bat B1 (ENSI-Poitiers), 86073, Poitiers, France
| | - Tony Chave
- Univ Montpellier, CNRS, UMR 5257, ICSM, CEA, UM, ENSCM, Marcoule, France
| | - Prince N Amaniampong
- Institut de Chimie des Milieux et Matériaux de Poitiers, Université de Poitiers, CNRS, 1 rue Marcel Doré, Bat B1 (ENSI-Poitiers), 86073, Poitiers, France
| | - Stéphane Streiff
- Eco-Efficient Products and Process Laboratory, SOLVAY/CNRS, 3966 Jin Du Rd., Xin Zhuang Industrial Zone, Shanghai, 201108, China
| | - François Jérôme
- Institut de Chimie des Milieux et Matériaux de Poitiers, Université de Poitiers, CNRS, 1 rue Marcel Doré, Bat B1 (ENSI-Poitiers), 86073, Poitiers, France
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2
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Zhang Y, Wang J, Yang Z, Zhang Z, He X, Chen G, Huang G, Lu X. Hydrazine Hydrate Accelerates Neocuproine-Copper Complex Generation and Utilization in Alkyne Reduction, a Significant Supplement Method for Catalytic Hydrogenation. J Org Chem 2021; 86:17696-17709. [PMID: 34818024 DOI: 10.1021/acs.joc.1c01803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Diimine (HN═NH) is a strong reducing agent, but the efficiency of diimine oxidized from hydrazine hydrate or its derivatives is still not good enough. Herein, we report an in situ neocuproine-copper complex formation method. The redox potential of this complex enable it can serve as an ideal redox catalyst in the synthesis of diimine by oxidation of hydrazine hydrate, and we successfully applied this technique in the reduction of alkynes. This reduction method displays a broad functional group tolerance and substrate adaptability as well as the advantages of safety and high efficiency. Especially, nitro, benzyl, boc, and sulfur containing alkynes can be reduced to the corresponding alkanes directly, which provides a useful complementary method to traditional catalytic hydrogenation. Besides, we applied this method in the preparation of the Alzheimer's disease drug CT-1812 and studied the mechanism.
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Affiliation(s)
- Yongsheng Zhang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China.,Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
| | - Jincheng Wang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China.,School of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China
| | - Zhenjiao Yang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China.,Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
| | - Zeng Zhang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China.,School of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China
| | - Xiaoyan He
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China
| | - Guoliang Chen
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
| | - Gang Huang
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China
| | - Xiuhong Lu
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China.,School of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai 201318, P. R. China
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3
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Neveselý T, Wienhold M, Molloy JJ, Gilmour R. Advances in the E → Z Isomerization of Alkenes Using Small Molecule Photocatalysts. Chem Rev 2021; 122:2650-2694. [PMID: 34449198 DOI: 10.1021/acs.chemrev.1c00324] [Citation(s) in RCA: 155] [Impact Index Per Article: 51.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Geometrical E → Z alkene isomerization is intimately entwined in the historical fabric of organic photochemistry and is enjoying a renaissance (Roth et al. Angew. Chem., Int. Ed. Engl. 1989 28, 1193-1207). This is a consequence of the fundamental stereochemical importance of Z-alkenes, juxtaposed with frustrations in thermal reactivity that are rooted in microscopic reversibility. Accessing excited state reactivity paradigms allow this latter obstacle to be circumnavigated by exploiting subtle differences in the photophysical behavior of the substrate and product chromophores: this provides a molecular basis for directionality. While direct irradiation is operationally simple, photosensitization via selective energy transfer enables augmentation of the alkene repertoire to include substrates that are not directly excited by photons. Through sustained innovation, an impressive portfolio of tailored small molecule catalysts with a range of triplet energies are now widely available to facilitate contra-thermodynamic and thermo-neutral isomerization reactions to generate Z-alkene fragments. This review is intended to serve as a practical guide covering the geometric isomerization of alkenes enabled by energy transfer catalysis from 2000 to 2020, and as a logical sequel to the excellent treatment by Dugave and Demange (Chem. Rev. 2003 103, 2475-2532). The mechanistic foundations underpinning isomerization selectivity are discussed together with induction models and rationales to explain the counterintuitive directionality of these processes in which very small energy differences distinguish substrate from product. Implications for subsequent stereospecific transformations, application in total synthesis, regioselective polyene isomerization, and spatiotemporal control of pre-existing alkene configuration in a broader sense are discussed.
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Affiliation(s)
- Tomáš Neveselý
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Max Wienhold
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - John J Molloy
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Ryan Gilmour
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany
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4
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Affiliation(s)
- Subhradip Kundu
- Organic Synthesis and Molecular Engineering Lab, Department of Chemistry National Institute of Technology Rourkela India
| | - Debayan Sarkar
- Organic Synthesis and Molecular Engineering Lab, Department of Chemistry National Institute of Technology Rourkela India
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5
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Sakai T, Kumoi T, Ishikawa T, Nitta T, Iida H. Comparison of riboflavin-derived flavinium salts applied to catalytic H 2O 2 oxidations. Org Biomol Chem 2018; 16:3999-4007. [PMID: 29766194 DOI: 10.1039/c8ob00856f] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of flavinium salts, 5-ethylisoalloxazinium, 5-ethylalloxazinium, and 1,10-ethylene-bridged alloxazinium triflates, were prepared from commercially available riboflavin. This study presents a comparison between their optical and redox properties, and their catalytic activity in H2O2 oxidations of sulfide, tertiary amine, and cyclobutanone. Reflecting the difference between the π-conjugated ring structures, the flavinium salts displayed very different redox properties, with reduction potentials in the order of: 5-ethylisoalloxazinium > 5-ethylalloxazinium > 1,10-ethylene-bridged alloxazinium. A comparison of their catalytic activity revealed that 5-ethylisoalloxazinium triflate specifically oxidises sulfide and cyclobutanone, and 5-ethylalloxazinium triflate smoothly oxidises tertiary amine. 1,10-Bridged alloxazinium triflate, which can be readily obtained from riboflavin in large quantities, showed moderate catalytic activity for the H2O2 oxidation of sulfide and cyclobutanone.
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Affiliation(s)
- Takuya Sakai
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan.
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6
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Metternich JB, Artiukhin DG, Holland MC, von Bremen-Kühne M, Neugebauer J, Gilmour R. Photocatalytic E → Z Isomerization of Polarized Alkenes Inspired by the Visual Cycle: Mechanistic Dichotomy and Origin of Selectivity. J Org Chem 2017; 82:9955-9977. [DOI: 10.1021/acs.joc.7b01281] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jan B. Metternich
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Denis G. Artiukhin
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Mareike C. Holland
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Maximilian von Bremen-Kühne
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Johannes Neugebauer
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Ryan Gilmour
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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7
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Ishikawa T, Kimura M, Kumoi T, Iida H. Coupled Flavin-Iodine Redox Organocatalysts: Aerobic Oxidative Transformation from N-Tosylhydrazones to 1,2,3-Thiadiazoles. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01535] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Tatsuro Ishikawa
- Department of Chemistry,
Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Maasa Kimura
- Department of Chemistry,
Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Takuma Kumoi
- Department of Chemistry,
Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Hiroki Iida
- Department of Chemistry,
Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
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8
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de Castro P, Rimulo IMR, de Almeida AM, Diniz R, Amarante GW. Brønsted Acid-Catalyzed Epimerization-Free Preparation of Dual-Protected Amino Acid Derivatives. ACS OMEGA 2017; 2:2967-2976. [PMID: 31457632 PMCID: PMC6641006 DOI: 10.1021/acsomega.7b00523] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 06/14/2017] [Indexed: 06/10/2023]
Abstract
An organocatalytic protocol, employing the commercially available EDC as coupling agent, has been developed for the preparation of dual-protected amino acid derivatives without epimerization. This methodology was then applied to different Boc-amino acid and amine derivatives in moderate to excellent isolated yields. In addition, racemization-free Boc deprotection was also demonstrated. Mechanism investigation through electrospray ionization (+)-mass spectrometry/mass spectrometry revealed an acyclic intermediate (no azlactone formation) activated by the camphorsulfonic acid as an organocatalyst as a key step for the sequential attack of the nucleophile.
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Affiliation(s)
- Pedro
P. de Castro
- Department
of Chemistry, Federal University of Juiz
de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036-900, Brazil
| | - Isabela M. R. Rimulo
- Department
of Chemistry, Federal University of Juiz
de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036-900, Brazil
| | - Angelina M. de Almeida
- Department
of Chemistry, Federal University of Juiz
de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036-900, Brazil
| | - Renata Diniz
- Department
of Chemistry, Federal University of Minas
Gerais, Campus Pampulha, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Giovanni W. Amarante
- Department
of Chemistry, Federal University of Juiz
de Fora, Campus Martelos, Juiz de Fora, Minas Gerais 36036-900, Brazil
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9
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Arakawa Y, Oonishi T, Kohda T, Minagawa K, Imada Y. Facile Preparation of Flavinium Organocatalysts. CHEMSUSCHEM 2016; 9:2769-2773. [PMID: 27553682 DOI: 10.1002/cssc.201600846] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 07/28/2016] [Indexed: 06/06/2023]
Abstract
We developed a safe, simple, inexpensive, and environmentally benign method for preparing N(5)-ethylated flavinium organocatalysts without using hazardous reagents or inert conditions as previously required. 5-Ethyl-3-methyllumiflavinium cation was prepared from its reduced form by NaNO2 -free aerobic oxidation, which was subsequently extracted onto commercial cation-exchange resins under NaClO4 -free conditions. The resulting resin-immobilized flavinium salts were found to be effective organocatalysts for aerobic oxidation reactions.
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Affiliation(s)
- Yukihiro Arakawa
- Department of Applied Chemistry, Tokushima University, Minamijosanjima, Tokushima, 770-8506, Japan
| | - Takahiro Oonishi
- Department of Applied Chemistry, Tokushima University, Minamijosanjima, Tokushima, 770-8506, Japan
| | - Takahiro Kohda
- Department of Applied Chemistry, Tokushima University, Minamijosanjima, Tokushima, 770-8506, Japan
| | - Keiji Minagawa
- Department of Applied Chemistry, Tokushima University, Minamijosanjima, Tokushima, 770-8506, Japan
- Institute of Liberal Arts and Sciences, Tokushima University, Minamijosanjima, Tokushima, 770-8506, Japan
| | - Yasushi Imada
- Department of Applied Chemistry, Tokushima University, Minamijosanjima, Tokushima, 770-8506, Japan.
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10
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Ortgies S, Depken C, Breder A. Oxidative Allylic Esterification of Alkenes by Cooperative Selenium-Catalysis Using Air as the Sole Oxidant. Org Lett 2016; 18:2856-9. [DOI: 10.1021/acs.orglett.6b01130] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stefan Ortgies
- Institut
für Organische
und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
| | - Christian Depken
- Institut
für Organische
und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
| | - Alexander Breder
- Institut
für Organische
und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
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11
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Fang Y, Yuan M, Jin X, Zhang L, Li R, Yang S, Fang M. Metal-free diimide reduction of alkenylphosphonates: simple and efficient protocol for the synthesis of α-substituted ethylphosphonates. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Murray AT, King R, Donnelly JVG, Dowley MJH, Tuna F, Sells D, John MP, Carbery DR. Symbiotic Transition-Metal and Organocatalysis for Catalytic Ambient Amine Oxidation and Alkene Reduction Reactions. ChemCatChem 2015. [DOI: 10.1002/cctc.201501153] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Rose King
- Department of Chemistry; University of Bath; Claverton Down Bath BA2 7AY UK
| | | | - Myles J. H. Dowley
- Department of Chemistry; University of Bath; Claverton Down Bath BA2 7AY UK
| | - Floriana Tuna
- EPSRC National EPR Facility; Alan Turing Building; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Daniel Sells
- EPSRC National EPR Facility; Alan Turing Building; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Matthew P. John
- GlaxoSmithKline Research and Development; Gunnels Wood Road Stevenage SG1 2NY UK
| | - David R. Carbery
- Department of Chemistry; University of Bath; Claverton Down Bath BA2 7AY UK
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13
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Pieber B, Cox DP, Kappe CO. Selective Olefin Reduction in Thebaine Using Hydrazine Hydrate and O2 under Intensified Continuous Flow Conditions. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00370] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bartholomäus Pieber
- Institute
of Chemistry, University of Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - D. Phillip Cox
- Noramco,
Inc., 503 Carr Road, Suite 200, Wilmington, Delaware 19809, United States
| | - C. Oliver Kappe
- Institute
of Chemistry, University of Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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14
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Metternich JB, Gilmour R. A Bio-Inspired, Catalytic E → Z Isomerization of Activated Olefins. J Am Chem Soc 2015; 137:11254-7. [PMID: 26310905 DOI: 10.1021/jacs.5b07136] [Citation(s) in RCA: 246] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Herein, Nature's flavin-mediated activation of complex (poly)enes has been translated to a small molecule paradigm culminating in a highly (Z)-selective, catalytic isomerization of activated olefins using (-)-riboflavin (up to 99:1 Z/E). In contrast to the prominent Z → E isomerization of the natural system, it was possible to invert the directionality of the isomerization (E → Z) by simultaneously truncating the retinal scaffold, and introducing a third olefin substituent to augment A1,3-strain upon isomerization. Consequently, conjugation is reduced in the product chromophore leading to a substrate/product combination with discrete photophysical signatures. The operationally simple isomerization protocol has been applied to a variety of enone-derived substrates and showcased in the preparation of the medically relevant 4-substituted coumarin scaffold. A correlation of sensitizer triplet energy (ET) and reaction efficiency, together with the study of additive effects and mechanistic probes, is consistent with a triplet energy transfer mechanism.
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Affiliation(s)
- Jan B Metternich
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany
| | - Ryan Gilmour
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany
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15
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Pieber B, Glasnov T, Kappe CO. Continuous Flow Reduction of Artemisinic Acid Utilizing Multi-Injection Strategies-Closing the Gap Towards a Fully Continuous Synthesis of Antimalarial Drugs. Chemistry 2015; 21:4368-76. [DOI: 10.1002/chem.201406439] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Indexed: 11/10/2022]
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16
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Khalafi-Nezhad A, Nourisefat M, Panahi F. l-Cysteine functionalized magnetic nanoparticles (LCMNP): a novel magnetically separable organocatalyst for one-pot synthesis of 2-amino-4H-chromene-3-carbonitriles in water. Org Biomol Chem 2015; 13:7772-9. [DOI: 10.1039/c5ob01030f] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Magnetic nanoparticles were functionalized with l-cysteine using a new and efficient method and introduced as a novel magnetically separable organocatalyst.
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Affiliation(s)
| | - Maryam Nourisefat
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
| | - Farhad Panahi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz
- Iran
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17
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Iida H, Imada Y, Murahashi SI. Biomimetic flavin-catalysed reactions for organic synthesis. Org Biomol Chem 2015; 13:7599-613. [DOI: 10.1039/c5ob00854a] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Using simple riboflavin related compounds as biomimetic catalysts, catalytic oxidation of various substrates with hydrogen peroxide or molecular oxygen can be performed selectively under mild conditions. The principle of these reactions is fundamental and will provide a wide scope for environmentally benign future practical methods.
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Affiliation(s)
- H. Iida
- Department of Chemistry
- Interdisciplinary Graduate School of Science and Engineering
- Shimane University
- Matsue 690-8504
- Japan
| | - Y. Imada
- Department of Chemical Science and Technology
- Tokushima University
- Tokushima 770-8506
- Japan
| | - S.-I. Murahashi
- Department of Chemistry
- Okayama University of Science
- Okayama 700-0005
- Japan
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18
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Cibulka R. Artificial Flavin Systems for Chemoselective and Stereoselective Oxidations. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403275] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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19
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Leow D, Chen YH, Hung TH, Su Y, Lin YZ. Photodriven Transfer Hydrogenation of Olefins. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Wu Z, Harutyunyan SR, Minnaard AJ. Total synthesis of (R,R,R)-γ-tocopherol through Cu-catalyzed asymmetric 1,2-addition. Chemistry 2014; 20:14250-5. [PMID: 25205372 DOI: 10.1002/chem.201404458] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Indexed: 11/09/2022]
Abstract
Based on the asymmetric copper-catalyzed 1,2-addition of Grignard reagents to ketones, (R,R,R)-γ-tocopherol has been synthesized in 36 % yield over 12 steps (longest linear sequence). The chiral center in the chroman ring was constructed with 73 % ee by the 1,2-addition of a phytol-derived Grignard reagent to an α-bromo enone prepared from 2,3-dimethylquinone.
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Affiliation(s)
- Zhongtao Wu
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747 AG, Groningen (The Netherlands)
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21
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Fodran P, Minnaard AJ. Catalytic synthesis of enantiopure mixed diacylglycerols – synthesis of a major M. tuberculosis phospholipid and platelet activating factor. Org Biomol Chem 2014; 11:6919-28. [PMID: 24191360 DOI: 10.1039/c3ob41483c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient catalytic one-pot synthesis of TBDMS-protected diacylglycerols has been developed, starting from enantiopure glycidol. Subsequent migration-free deprotection leads to stereo- and regiochemically pure diacylglycerols. This novel strategy has been applied to the synthesis of a major Mycobacterium tuberculosis phospholipid, its desmethyl analogue, and platelet activating factor.
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22
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Kotoučová H, Strnadová I, Kovandová M, Chudoba J, Dvořáková H, Cibulka R. Biomimetic aerobic oxidative hydroxylation of arylboronic acids to phenols catalysed by a flavin derivative. Org Biomol Chem 2014; 12:2137-42. [DOI: 10.1039/c3ob42081g] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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23
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Pieber B, Martinez ST, Cantillo D, Kappe CO. In Situ Generation of Diimide from Hydrazine and Oxygen: Continuous-Flow Transfer Hydrogenation of Olefins. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303528] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Pieber B, Martinez ST, Cantillo D, Kappe CO. In Situ Generation of Diimide from Hydrazine and Oxygen: Continuous-Flow Transfer Hydrogenation of Olefins. Angew Chem Int Ed Engl 2013; 52:10241-4. [DOI: 10.1002/anie.201303528] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Indexed: 11/08/2022]
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Buter J, Yeh EAH, Budavich OW, Damodaran K, Minnaard AJ, Curran DP. Synthesis and analysis of the all-(S) side chain of phosphomycoketides: a test of NMR predictions for saturated oligoisoprenoid stereoisomers. J Org Chem 2013; 78:4913-8. [PMID: 23582013 DOI: 10.1021/jo4005298] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
(4S,8S,12S,16S,20S)-Pentamethylheptacosan-1-ol has been synthesized and analyzed by resolution-enhanced NMR spectroscopy with the aid of a recent set predicted spectra of all its stereoisomers. The configuration was confirmed, but isomer purity of the sample (~70%) was lower than expected. A truncated analogue, (2S,6S,10S,14S)-2,6,10,14-tetramethylhenicosan-1-ol TBDPS ether, was prepared from a late stage synthetic intermediate. Analysis of its spectra confirmed the configuration and showed that the sample was isomerically pure. The results suggest that a late-stage epimerization, not a failure of an asymmetric synthesis step, caused the formation of minor stereoisomers in the sample of pentamethylheptacosan-1-ol. The study shows the value of the predicted set of oligoisoprenoid spectra and further extends the predictive model to a new subclass of compounds.
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Affiliation(s)
- Jeffrey Buter
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
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Affiliation(s)
- Andrew S. Kleinke
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Timothy F. Jamison
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Fañanás-Mastral M, Teichert JF, Fernández-Salas JA, Heijnen D, Feringa BL. Enantioselective synthesis of almorexant via iridium-catalysed intramolecular allylic amidation. Org Biomol Chem 2013; 11:4521-5. [DOI: 10.1039/c3ob40655e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Ferrer C, Fodran P, Barroso S, Gibson R, Hopmans EC, Damsté JS, Schouten S, Minnaard AJ. Asymmetric synthesis of cyclo-archaeol and β-glucosyl cyclo-archaeol. Org Biomol Chem 2013; 11:2482-92. [DOI: 10.1039/c3ob27277j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Iida H, Iwahana S, Mizoguchi T, Yashima E. Main-Chain Optically Active Riboflavin Polymer for Asymmetric Catalysis and Its Vapochromic Behavior. J Am Chem Soc 2012; 134:15103-13. [DOI: 10.1021/ja306159t] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Hiroki Iida
- Department of Molecular
Design and Engineering, Graduate
School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Soichiro Iwahana
- Department of Molecular
Design and Engineering, Graduate
School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Tomohisa Mizoguchi
- Department of Molecular
Design and Engineering, Graduate
School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Eiji Yashima
- Department of Molecular
Design and Engineering, Graduate
School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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Lamani M, Ravikumara GS, Prabhu KR. Iron(III) Chloride-Catalysed Aerobic Reduction of Olefins using Aqueous Hydrazine at Ambient Temperature. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200110] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lamani M, Guralamata RS, Prabhu KR. Guanidine catalyzed aerobic reduction: a selective aerobic hydrogenation of olefins using aqueous hydrazine. Chem Commun (Camb) 2012; 48:6583-5. [DOI: 10.1039/c2cc32611f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mulder MPC, Fodran P, Kemmink J, Breukink EJ, Kruijtzer JAW, Minnaard AJ, Liskamp RMJ. Mutual influence of backbone proline substitution and lipophilic tail character on the biological activity of simplified analogues of caspofungin. Org Biomol Chem 2012; 10:7491-502. [DOI: 10.1039/c2ob25951f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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