1
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Li H, Dickschat JS. Enzymatic Synthesis of Diterpenoids from iso-GGPP III: A Geranylgeranyl Diphosphate Analog with a Shifted Double Bond. Chemistry 2024; 30:e202303560. [PMID: 37947363 DOI: 10.1002/chem.202303560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 11/12/2023]
Abstract
The analog of the diterpene precursor geranylgeranyl diphosphate with a double bond shifted from C14=C15 to C15=C16 (named iso-GGPP III) has been synthesized and enzymatically converted with six bacterial diterpene synthases; this allowed the isolation of nine unnatural diterpenes. For some of the enzyme-substrate combinations, the different reactivity implemented in the substrate analog iso-GGPP III opened reaction pathways that are not observed with natural GGPP, resulting in the formation of diterpenes with novel skeletons. A stereoselective deuteration strategy was used to assign the absolute configurations of the isolated diterpenes.
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Affiliation(s)
- Heng Li
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
| | - Jeroen S Dickschat
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Straße 1, 53121, Bonn, Germany
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2
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Toh RW, Patrzałek M, Nienałtowski T, Piątkowski J, Kajetanowicz A, Wu J, Grela K. Olefin Metathesis in Continuous Flow Reactor Employing Polar Ruthenium Catalyst and Soluble Metal Scavenger for Instant Purification of Products of Pharmaceutical Interest. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2021; 9:16450-16458. [PMID: 34900446 PMCID: PMC8655794 DOI: 10.1021/acssuschemeng.1c06522] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/09/2021] [Indexed: 05/03/2023]
Abstract
In recent years, the development of continuous-flow reactors has attracted growing attention from the synthetic community. Moreover, findings in the precise control of the reaction parameters and improved mass/heat transfer have made the flow setup an attractive alternative to batch reactors, both in academia and industry, enabling safe and easy scaling-up of synthetic processes. Even though a majority of the pharmaceutical industry currently rely on batch reactors or semibatch reactors, many are integrating flow technology because of easier maintenance and lower risks. Herein, we demonstrate an operationally simple flow setup for homogeneous ring-closing metathesis, which is applicable to the synthesis of active pharmaceutical ingredients precursors or analogues with high efficiency, low residence time, and in a green solvent. Furthermore, through the addition of a soluble metal scavenger in the subsequent step within the flow system, the level of ruthenium contamination in the final product can be greatly reduced (to less than 5 ppm). To ensure that this method is applicable for industrial usage, an upscale process including a 24 h continuous-flow reaction for more than 60 g of a Sildenafil analogue was achieved in a continuous-flow fashion by adjusting the tubing size and flow rate accordingly.
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Affiliation(s)
- Ren Wei Toh
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Michał Patrzałek
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Tomasz Nienałtowski
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
- Pharmaceutical
Works Polpharma SA, Pelplińska
19, 83-200 Starogard
Gdański, Poland
| | - Jakub Piątkowski
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Anna Kajetanowicz
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
- Email for A.K.:
| | - Jie Wu
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Email for J.W.:
| | - Karol Grela
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
- Email for K.G.:
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3
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Monsigny L, Cejas Sánchez J, Piątkowski J, Kajetanowicz A, Grela K. Synthesis and Catalytic Properties of a Very Latent Selenium-Chelated Ruthenium Benzylidene Olefin Metathesis Catalyst. Organometallics 2021; 40:3608-3616. [PMID: 34776582 PMCID: PMC8579520 DOI: 10.1021/acs.organomet.1c00484] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Indexed: 11/30/2022]
Abstract
![]()
Herein, we describe
a study of the synthesis, characterization,
and catalytic properties of a cis-dichlorido seleno-chelated
Hoveyda–Grubbs type complex (Ru8). Such a complex
has been obtained through a straightforward and high-yielding synthetic
protocol in three steps from the commercially available 2-bromobenzaldehyde
in good overall yield (54%). The catalytic profile, especially the
latency of this complex, has been probed through selected olefin metathesis
reactions such as ring-closing metathesis (RCM), self-cross-metathesis
(self-CM) and ring-opening metathesis polymerization (ROMP). In addition
to its high latency, the selenium Hoveyda-type complex Ru8 exhibits a switchable behavior upon thermal activation. Of interest,
while the corresponding sulfur-chelated Hoveyda type catalyst is reported
to be only activated by heat, the selenium analogue was found to be
active upon both heat and light irradiation.
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Affiliation(s)
- Louis Monsigny
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Joel Cejas Sánchez
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Jakub Piątkowski
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Anna Kajetanowicz
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Karol Grela
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
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4
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Sekerová L, Černá H, Vyskočilová E, Vrbková E, Červený L. Preparation of α-Terpineol from Biomass Resource Catalysed by Acid Treated Montmorillonite K10. Catal Letters 2021. [DOI: 10.1007/s10562-020-03514-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Nienałtowski T, Krzesiński P, Baumert ME, Skoczeń A, Suska-Kauf E, Pawłowska J, Kajetanowicz A, Grela K. 4-Methyltetrahydropyran as a Convenient Alternative Solvent for Olefin Metathesis Reaction: Model Studies and Medicinal Chemistry Applications. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2020; 8:18215-18223. [PMID: 33344098 PMCID: PMC7739489 DOI: 10.1021/acssuschemeng.0c06668] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/30/2020] [Indexed: 05/03/2023]
Abstract
A number of metathesis reactions were successfully conducted in 4-methyltetrahydropyran, including both standard model dienes, as well as more complex substrates, such as analogues of biologically active compounds and active pharmaceutical ingredients. To place this solvent in a context of pharmaceutical R + D, larger-scale syntheses of SUAM 1221, a prolyl endopeptidase inhibitor with potential application in Alzheimer disease treatment, and a derivative of sildenafil, an analogue of the popular Viagra drug, were executed. In the latter case, despite all the setup being made in air, the metathesis reaction at a 33 g scale proceeded very well with relatively low catalyst loading and without need of aqueous workup or column chromatography.
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Affiliation(s)
- Tomasz Nienałtowski
- Faculty
of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
- Pharmaceutical
Works Polpharma SA, Pelplińska 19, 83-200 Starogard Gdański, Poland
| | - Paweł Krzesiński
- Faculty
of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Marcel E. Baumert
- Faculty
of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Aleksandra Skoczeń
- Faculty
of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Ewa Suska-Kauf
- Faculty
of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Jolanta Pawłowska
- Pharmaceutical
Works Polpharma SA, Pelplińska 19, 83-200 Starogard Gdański, Poland
| | - Anna Kajetanowicz
- Faculty
of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Karol Grela
- Faculty
of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
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6
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Nienałtowski T, Szczepanik P, Małecki P, Czajkowska‐Szczykowska D, Czarnocki S, Pawłowska J, Kajetanowicz A, Grela K. Large‐Scale Synthesis of a Niche Olefin Metathesis Catalyst Bearing an Unsymmetrical N‐Heterocyclic Carbene (NHC) Ligand and its Application in a Green Pharmaceutical Context. Chemistry 2020; 26:15708-15717. [DOI: 10.1002/chem.202003830] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/14/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Tomasz Nienałtowski
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02-089 Warsaw Poland
- Polpharma SA Pharmaceutical Works Pelplinska 19 83-200 Starogard Gdanski Poland
| | - Paweł Szczepanik
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02-089 Warsaw Poland
| | - Paweł Małecki
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02-089 Warsaw Poland
| | - Dorota Czajkowska‐Szczykowska
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02-089 Warsaw Poland
| | | | - Jolanta Pawłowska
- Polpharma SA Pharmaceutical Works Pelplinska 19 83-200 Starogard Gdanski Poland
| | - Anna Kajetanowicz
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02-089 Warsaw Poland
| | - Karol Grela
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02-089 Warsaw Poland
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7
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Eivgi O, Phatake RS, Nechmad NB, Lemcoff NG. Light-Activated Olefin Metathesis: Catalyst Development, Synthesis, and Applications. Acc Chem Res 2020; 53:2456-2471. [PMID: 32990427 PMCID: PMC7584343 DOI: 10.1021/acs.accounts.0c00495] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Indexed: 12/30/2022]
Abstract
The most important means for tuning and improving a catalyst's properties is the delicate exchange of the ligand shell around the central metal atom. Perhaps for no other organometallic-catalyzed reaction is this statement more valid than for ruthenium-based olefin metathesis. Indeed, even the simple exchange of an oxygen atom for a sulfur atom in a chelated ruthenium benzylidene about a decade ago resulted in the development of extremely stable, photoactive catalysts. This Account presents our perspective on the development of dormant olefin metathesis catalysts that can be activated by external stimuli and, more specifically, the use of light as an attractive inducing agent.The insight gained from a deeper understanding of the properties of cis-dichlororuthenium benzylidenes opened the doorway for the systematic development of new and efficient light-activated olefin metathesis catalysts and catalytic chromatic-orthogonal synthetic schemes. Following this, ways to disrupt the ligand-to-metal bond to accelerate the isomerization process that produced the active precatalyst were actively pursued. Thus, we summarize herein the original thermal activation experiments and how they brought about the discoveries of photoactivation in the sulfur-chelated benzylidene family of catalysts. The specific wavelengths of light that were used to dissociate the sulfur-ruthenium bond allowed us to develop noncommutative catalytic chromatic-orthogonal processes and to combine other photochemical reactions with photoinduced olefin metathesis, including using external light-absorbing molecules as "sunscreens" to achieve novel selectivities. Alteration of the ligand sphere, including modifications of the N-heterocyclic carbene (NHC) ligand and the introduction of cyclic alkyl amino carbene (CAAC) ligands, produced more efficient light-induced activity and special chemical selectivity. The use of electron-rich sulfoxides and, more prominently, phosphites as the agents that induce latency widened the spectrum of light-induced olefin metathesis reactions even further by expanding the colors of light that may now be used to activate the catalysts, which can be used in applications such as stereolithography and 3D printing of tough metathesis-derived polymers.
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Affiliation(s)
- Or Eivgi
- Department
of Chemistry, Ben-Gurion University of the
Negev, Beer-Sheva 84105, Israel
| | - Ravindra S. Phatake
- Department
of Chemistry, Ben-Gurion University of the
Negev, Beer-Sheva 84105, Israel
| | - Noy B. Nechmad
- Department
of Chemistry, Ben-Gurion University of the
Negev, Beer-Sheva 84105, Israel
| | - N. Gabriel Lemcoff
- Department
of Chemistry, Ben-Gurion University of the
Negev, Beer-Sheva 84105, Israel
- Ilse
Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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8
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Planer S, Małecki P, Trzaskowski B, Kajetanowicz A, Grela K. Sterically Tuned N-Heterocyclic Carbene Ligands for the Efficient Formation of Hindered Products in Ru-Catalyzed Olefin Metathesis. ACS Catal 2020; 10:11394-11404. [PMID: 33123411 PMCID: PMC7587146 DOI: 10.1021/acscatal.0c02770] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/03/2020] [Indexed: 11/28/2022]
Abstract
Formation of tetrasubstituted C-C double bonds via olefin metathesis is considered very challenging for classical Ru-based complexes. In the hope to improve this condition, three ruthenium olefin metathesis catalysts bearing sterically reduced N-heterocyclic carbene (NHC) ligands with xylyl "arms" were synthesized, characterized using both computational and experimental techniques, and tested in a number of challenging reactions. The catalysts are predicted to initiate much faster than the analogue with mesityl N-substituents. We also foreboded the rotation of xylyl side groups at ambient temperature and the existence of all four atropoisomers in the solution, which was in agreement with experimental data. These catalysts exhibited high activity at relatively low temperatures (45-60 °C) and at reduced catalyst loadings in various reactions of sterically hindered alkenes, including complex polyfunctional substrates of pharmaceutical interest, such as yangonin precursors, chrysantemic acid derivatives, analogues of cannabinoid agonists, α-terpineol, and finally a thermally unstable peroxide.
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Affiliation(s)
- Sebastian Planer
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Paweł Małecki
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Bartosz Trzaskowski
- Centre
of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
| | - Anna Kajetanowicz
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Karol Grela
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
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9
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Segalovich-Gerendash G, Rozenberg I, Alassad N, Nechmad NB, Goldberg I, Kozuch S, Lemcoff NG. Imposing Latency in Ruthenium Sulfoxide-Chelated Benzylidenes: Expanding Opportunities for Thermal and Photoactivation in Olefin Metathesis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00676] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Illya Rozenberg
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - Nebal Alassad
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - Noy B. Nechmad
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - Israel Goldberg
- School of Chemistry, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Sebastian Kozuch
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - N. Gabriel Lemcoff
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
- Ilse Katz Institute for Nanoscale Science and Technology, Beer-Sheva 8410501, Israel
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10
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Planer S, Jana A, Grela K. Ethyl Lactate: A Green Solvent for Olefin Metathesis. CHEMSUSCHEM 2019; 12:4655-4661. [PMID: 31412165 DOI: 10.1002/cssc.201901735] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/13/2019] [Indexed: 05/08/2023]
Abstract
Compatibility of selected, commercially available ruthenium olefin metathesis catalysts with ethyl lactate as solvent was evaluated using a range of substrates and conditions. In addition, the preparation of a metathesis catalyst in simplified manner by using the advantages of ethyl lactate was accomplished. The application of ethyl lactate facilitates product isolation (also allowing for lower ruthenium contamination in crude metathesis products) and improves the overall green angle of olefin metathesis.
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Affiliation(s)
- Sebastian Planer
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Zwirki I Wigury 101, 02-089, Warsaw, Poland
| | - Anupam Jana
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Zwirki I Wigury 101, 02-089, Warsaw, Poland
| | - Karol Grela
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Zwirki I Wigury 101, 02-089, Warsaw, Poland
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11
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Rajkiewicz AA, Skowerski K, Trzaskowski B, Kajetanowicz A, Grela K. 2-Methyltetrahydrofuran as a Solvent of Choice for Spontaneous Metathesis/Isomerization Sequence. ACS OMEGA 2019; 4:1831-1837. [PMID: 31459437 PMCID: PMC6648348 DOI: 10.1021/acsomega.8b03027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/08/2019] [Indexed: 05/18/2023]
Abstract
A new protocol for ring-closing metathesis/isomerization sequence was developed. The reactions of selected dienes were performed in overheated 2-methyltetrahydrofuran at 120 °C and provided a wide range of cyclic vinyl ethers and amides with good yields and selectivities. Computational analysis suggests that the relative yield of products depends on a thermodynamically driven process on the basis of relative stabilities of isomers.
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Affiliation(s)
- Adam A. Rajkiewicz
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warszawa, Poland
| | | | | | - Anna Kajetanowicz
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warszawa, Poland
- E-mail: (A.K.)
| | - Karol Grela
- Biological
and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warszawa, Poland
- E-mail: (K.G.)
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12
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Smoleń M, Marczyk A, Kośnik W, Trzaskowski B, Kajetanowicz A, Grela K. Ruthenium‐Catalysed Olefin Metathesis in Environmentally Friendly Solvents: 2‐Methyltetrahydrofuran Revisited. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801741] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Michał Smoleń
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
| | - Anna Marczyk
- Faculty of Chemistry Centre of New Technologies, University of Warsaw S. Banacha 2c 02‐097 Warszawa Poland
| | - Wioletta Kośnik
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
| | - Bartosz Trzaskowski
- Faculty of Chemistry Centre of New Technologies, University of Warsaw S. Banacha 2c 02‐097 Warszawa Poland
| | - Anna Kajetanowicz
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
| | - Karol Grela
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury 101 02‐089 Warsaw Poland
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13
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Johns AM, Fiamengo BA, Herron JR, Bourg JB, Doppiu A, Karch R, Pederson RL. cis-Dichloro Sulfoxide Ligated Ruthenium Metathesis Precatalysts. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00895] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Adam M. Johns
- Materia, Inc., Pasadena, California 91107, United States
| | | | | | - Jean-Baptiste Bourg
- Materia, Inc., Pasadena, California 91107, United States
- Umicore AG & Co. KG, Rodenbacher Chaussee 4, D-63457 Hanau-Wolfgang, Germany
| | - Angelino Doppiu
- Umicore AG & Co. KG, Rodenbacher Chaussee 4, D-63457 Hanau-Wolfgang, Germany
| | - Ralf Karch
- Umicore AG & Co. KG, Rodenbacher Chaussee 4, D-63457 Hanau-Wolfgang, Germany
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14
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2016. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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15
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Roscales S, Plumet J. Ring Rearrangement Metathesis in 7-Oxabicyclo[2.2.1]heptene (7-Oxanorbornene) Derivatives. Some Applications in Natural Product Chemistry. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Metathesis reactions is firmly established as a valuable synthetic tool in organic chemistry, clearly comparable with the venerable Diels-Alder and Wittig reactions and, more recently, with the metal-catalyzed cross-coupling reactions. Metathesis reactions can be considered as a fascinating synthetic methodology, allowing different variants regarding substrate (alkene and alkyne metathesis) and type of metathetical reactions. On the other hand, tandem metathesis reactions such Ring Rearrangement Metathesis (RRM) and the coupling of metathesis reaction with other reactions of alkenes such as Diels-Alder or Heck reactions, makes metathesis one of the most powerful and reliable synthetic procedure.In particular, Ring-Rearrangement Metathesis (RRM) refers to the combination of several metathesis transformations into a domino process such as ring-opening metathesis (ROM)/ring-closing metathesis (RCM) and ROM-cross metathesis (CM) in a one-pot operation. RRM delivers complex frameworks that are difficult to assemble by conventional methods constitutingan atom economic process. RRM is applicable to mono- and polycyclic systems of varying ring sizes such as cyclopropene, cyclobutene, cyclopentene, cyclohexene, pyran systems, bicyclo[2.2.1]heptene derivatives, bicyclo[2.2.2]octene derivatives, bicyclo[3.2.1]octene derivatives and bicyclo[3.2.1]octene derivatives.In this review our attention has focused on the RRM reactions in 7-oxabicyclo[2.2.1]heptene derivatives and on their application in the synthesis of natural products or significant subunits of them.
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Affiliation(s)
- Silvia Roscales
- Technological Institute Pet, 10 Manuel Bartolomé Cossio St, 28040 Madrid, Spain
| | - Joaquín Plumet
- Complutense University, Faculty of Chemistry, Organic Chemistry Department, Ciudad Universitaria, 28040, Madrid, Spain
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16
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César V, Zhang Y, Kośnik W, Zieliński A, Rajkiewicz AA, Ruamps M, Bastin S, Lugan N, Lavigne G, Grela K. Ruthenium Catalysts Supported by Amino-Substituted N-Heterocyclic Carbene Ligands for Olefin Metathesis of Challenging Substrates. Chemistry 2017; 23:1950-1955. [PMID: 27914097 DOI: 10.1002/chem.201604934] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Indexed: 11/06/2022]
Abstract
N-Heterocyclic carbene (NHC) ligands IMesNMe2 and IMes(NMe2)2 derived from the well-known IMes ligand by substituting the carbenic heterocycle with one and two dimethylamino groups, respectively, were employed for the synthesis of second-generation Grubbs- and Grubbs-Hoveyda-type ruthenium metathesis precatalysts. Whereas the stability of the complexes was found to depend on the degree of dimethylamino-substitution and on the type of complex, the backbone-substitution was shown to have a positive impact on their catalytic activity in ring-closing metathesis, with a more pronounced effect in the second-generation Grubbs-type series. The new complexes were successfully implemented in a number of challenging olefin metathesis reactions leading to the formation of tetra-substituted C=C double bonds and/or functionalized compounds.
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Affiliation(s)
- Vincent César
- LCC-CNRS, Université de Toulouse, INPT, UPS, Toulouse, France), Fax: (+)33 (0) 5 61 55 30 03
| | - Yin Zhang
- LCC-CNRS, Université de Toulouse, INPT, UPS, Toulouse, France), Fax: (+)33 (0) 5 61 55 30 03
| | - Wioletta Kośnik
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Zwirki i Wigury 101, 02-089, Warsaw, Poland
| | - Adam Zieliński
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Zwirki i Wigury 101, 02-089, Warsaw, Poland
| | - Adam A Rajkiewicz
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Zwirki i Wigury 101, 02-089, Warsaw, Poland
| | - Mirko Ruamps
- LCC-CNRS, Université de Toulouse, INPT, UPS, Toulouse, France), Fax: (+)33 (0) 5 61 55 30 03
| | - Stéphanie Bastin
- LCC-CNRS, Université de Toulouse, INPT, UPS, Toulouse, France), Fax: (+)33 (0) 5 61 55 30 03
| | - Noël Lugan
- LCC-CNRS, Université de Toulouse, INPT, UPS, Toulouse, France), Fax: (+)33 (0) 5 61 55 30 03
| | - Guy Lavigne
- LCC-CNRS, Université de Toulouse, INPT, UPS, Toulouse, France), Fax: (+)33 (0) 5 61 55 30 03
| | - Karol Grela
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Zwirki i Wigury 101, 02-089, Warsaw, Poland
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