1
|
Krevlin ZA, Bote IC, Crespo MCF, Lam CC, McMillen CD, Majireck MM. Synthesis and crystal structure of a bench-stable pyridinium ketene hemiaminal: 1-(1-eth-oxy-ethen-yl)-2-[meth-yl(phen-yl)amino]-pyridin-1-ium tri-fluoro-methane-sulfonate. Acta Crystallogr E Crystallogr Commun 2023; 79:698-701. [PMID: 37601406 PMCID: PMC10439406 DOI: 10.1107/s2056989023005741] [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: 06/08/2023] [Accepted: 06/29/2023] [Indexed: 08/22/2023]
Abstract
The novel bench-stable N-quaternized ketene N,O-acetal, C16H19N2O+·CF3O3S-, was synthesized and its structure determined. The title compound is a rare example of a pyridinium ketene hemiaminal for which a crystal structure has been determined, joining the 2-chloro-1-(1-ethyoxyethen-yl)pyridin-1-ium tri-fluoro-methane-sulfonate salt from which it was synthesized. The cationic species of the title compound can be defined by three individually planar fragments assembling into a non-coplanar cation. The phenyl substituent extending from the amino nitro-gen atom and the ethyoxyvinyl substituent extending from the pyridine N atom are oriented on the same side of the mol-ecule and maintain the closest coplanar relationship of the three fragments. Supra-molecular inter-actions are dominated by C-H⋯O inter-actions from the cation to the SO3 side of the tri-fluoro-methane-sulfonate anion, forming a two-dimensional substructure.
Collapse
Affiliation(s)
- Zoe A. Krevlin
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, NY 13323, USA
| | - Isabella C. Bote
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, NY 13323, USA
| | | | - Christie C. Lam
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, NY 13323, USA
| | - Colin D. McMillen
- Department of Chemistry, Clemson University, H.L. Hunter Laboratories, Clemson, SC 29634, USA
| | - Max M. Majireck
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, NY 13323, USA
| |
Collapse
|
2
|
Qaroush AK, Eftaiha AF, Smadi AH, Assaf KI, Al-Qaisi FM, Alsoubani F. CS 2/CO 2 Utilization Using Mukaiyama Reagent as a (Thio)carbonylating Promoter: A Proof-of-Concept Study. ACS OMEGA 2022; 7:22511-22521. [PMID: 35811893 PMCID: PMC9260919 DOI: 10.1021/acsomega.2c01774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
We report on the reaction of ethylene-terminated heteroatoms (C2X; X = N, O, and S) with CS2/CO2 using Mukaiyama reagent (2-chloro-1-methylpyridinium iodide, CMPI) as a promoter for the preparation of imidazolidin-2-one, oxazolidin-2-one, 1,3-dioxolan-2-one, 1,3-dithiolan-2-one, and their thione counterparts at ambient temperature and pressure. Spectroscopic measurements, viz., 1H/13C nuclear magnetic resonance (NMR) and ex situ attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy methods verified the reaction of CS2/CO2 with the ethylene-based substrates and subsequently the formation of cyclic products. The experimental data indicated the formation of the enol-form of imidazolidin-2-one and oxazolidin-2-one, while the keto-form was obtained for their thione correspondents. Furthermore, density functional theory calculations revealed the stability of the keto- over the enol-form for all reactions and pointed out the solvent effect in stabilizing the latter.
Collapse
Affiliation(s)
- Abdussalam K. Qaroush
- Department
of Chemistry, Faculty of Science, The University
of Jordan, Amman 11942, Jordan
| | - Ala’a F. Eftaiha
- Department
of Chemistry, Faculty of Science, The Hashemite
University, P.O. Box 330127, Zarqa 13133, Jordan
| | - Amneh H. Smadi
- Department
of Chemistry, Faculty of Science, The Hashemite
University, P.O. Box 330127, Zarqa 13133, Jordan
| | - Khaleel I. Assaf
- Department
of Chemistry, Faculty of Science, Al-Balqa
Applied University, Al-Salt 19117, Jordan
| | - Feda’a M. Al-Qaisi
- Department
of Chemistry, Faculty of Science, The Hashemite
University, P.O. Box 330127, Zarqa 13133, Jordan
| | - Fatima Alsoubani
- Department
of Chemistry, Faculty of Science, The Hashemite
University, P.O. Box 330127, Zarqa 13133, Jordan
| |
Collapse
|
3
|
Willand-Charnley R, Paris TJ. Modern Synthesis and Chemistry of Stabilized Ketene N,O-Acetals. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1713-8481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractKetene N,O-acetals are robust and versatile synthons. Herein, we outline the synthesis of stable ketene N,O-acetals in the twenty-first century. In addition, we review recent developments in the chemistry of ketene N,O-acetals, as it applies to the vinylogous Mukaiyama aldol reaction, electrolysis, and pericyclic transformations. While dated reports rely on in situ use, modern methods of ketene N,O-acetal synthesis are heavily oriented towards producing products with high ‘bench’ stability; moreover, in the present century, chemists typically enhance the stability of ketene N,O-acetals by positioning an electron-withdrawing group at the β-terminus or at the N-position. As propitious substrates in the vinylogous Mukaiyama aldol reaction, ketene N,O-acetals readily provide polyketide adducts with high regioselectivity. When exposed to electrolysis conditions, the title functional group forms a reactive radical cation and cleanly couples with a variety of activated olefins. Given their electron-rich nature, ketene N,O-acetals act as facile substrates in several rearrangement reactions; further, ketene N,O-acetals reserve the ability to act as either dienophiles or dienes in Diels–Alder reactions. Lastly, ketene N,O-acetals are seemingly more stable than their O,O-counterparts and more reactive than analogous N,N- or S,S-acetals; these factors, in combination, make ketene N,O-acetals advantageous substitutes for other ketene acetal homologues.1 Introduction2 Select Methods of Stabilization-Oriented Ketene N,O-Acetal Synthesis3 Ketene N,O-Acetals in the Vinylogous Mukaiyama Aldol Reaction4 Ketene N,O-Acetals in Anodic Coupling and Electrochemical Oxidation Reactions5 Rearrangement and Diels–Alder Reactions of Ketene N,O-Acetals6 Conclusions, Perspectives, and Directions
Collapse
Affiliation(s)
| | - Timothy J. Paris
- Medicinal Chemistry Knowledge Center, Stanford ChEM-H, Stanford University
| |
Collapse
|
4
|
Kawamoto T, Ikeda S, Kamimura A. Synthesis of 1-(1-Arylvinyl)pyridin-2(1 H)-ones from Ketones and 2-Fluoropyridine. J Org Chem 2021; 86:13783-13789. [PMID: 34547204 DOI: 10.1021/acs.joc.1c01615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We describe a simple and efficient procedure for the synthesis of N-vinyl-substituted pyridones from ketones and 2-fluoropyridine in the presence of trifluoromethane sulfonic anhydride, followed by a base treatment. Various ketones with electron-donating or electron-withdrawing groups at the benzene rings can be used in this reaction. A preliminary mechanistic study indicates that it is not very likely that both vinyl triflates and vinyl cations play major roles as intermediates in this transformation.
Collapse
Affiliation(s)
- Takuji Kawamoto
- Department of Applied Chemistry, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan
| | - Shunya Ikeda
- Department of Applied Chemistry, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan
| | - Akio Kamimura
- Department of Applied Chemistry, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan
| |
Collapse
|
5
|
McConnell DL, Blades AM, Rodrigues DG, Keyes PV, Sonberg JC, Anthony CE, Rachad S, Simone OM, Sullivan CF, Shapiro JD, Williams CC, Schafer BC, Glanzer AM, Hutchinson HL, Thayaparan AB, Krevlin ZA, Bote IC, Haffary YA, Bhandari S, Goodman JA, Majireck MM. Synthesis of Bench-Stable N-Quaternized Ketene N, O-Acetals and Preliminary Evaluation as Reagents in Organic Synthesis. J Org Chem 2021; 86:13025-13040. [PMID: 34498466 DOI: 10.1021/acs.joc.1c01764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
N-Quaternized ketene N,O-acetals are typically an unstable, transient class of compounds most commonly observed as reactive intermediates. In this report, we describe a general synthetic approach to a variety of bench-stable N-quaternized ketene N,O-acetals via treatment of pyridine or aniline bases with acetylenic ethers and an appropriate Brønsted or Lewis acid (triflic acid, triflimide, or scandium(III) triflate). The resulting pyridinium and anilinium salts can be used as reagents or synthetic intermediates in multiple reaction types. For example, N-(1-ethoxyvinyl)pyridinium or anilinium salts can thermally release highly reactive O-ethyl ketenium ions for use in acid catalyst-free electrophilic aromatic substitutions. N-(1-Ethoxyvinyl)-2-halopyridinium salts can be employed in peptide couplings as a derivative of Mukaiyama reagents or react with amines in nucleophilic aromatic substitutions under mild conditions. These preliminary reactions illustrate the broad potential of these currently understudied compounds in organic synthesis.
Collapse
Affiliation(s)
- Danielle L McConnell
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Alisha M Blades
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Danielle Gomes Rodrigues
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Phoebe V Keyes
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Justin C Sonberg
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Caitlin E Anthony
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Sofia Rachad
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Olivia M Simone
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Caroline F Sullivan
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Jonathan D Shapiro
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Christopher C Williams
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Benjamin C Schafer
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Amy M Glanzer
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Holly L Hutchinson
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Ashley B Thayaparan
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Zoe A Krevlin
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Isabella C Bote
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Yasin A Haffary
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Sambat Bhandari
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Jack A Goodman
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| | - Max M Majireck
- Chemistry Department, Hamilton College, 198 College Hill Rd., Clinton, New York 13323, United States
| |
Collapse
|
6
|
Shahbakhsh Y, Habibi-Khorassani SM, Shahraki M. Experimental and theoretical approaches on the reaction mechanism and kinetics of dimethyl 2-(6-oxopyridazin-1(6H)-yl)fumarate: Micelle and salt effects. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2019.1639702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Yaser Shahbakhsh
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan , Zahedan , Iran
| | | | - Mehdi Shahraki
- Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan , Zahedan , Iran
| |
Collapse
|
7
|
Bogdanov AV, Zaripova IF, Voloshina AD, Sapunova AS, Kulik NV, Bukharov SV, Voronina JK, Vandyukov AE, Mironov VF. Synthesis and Biological Evaluation of New Isatin‐Based QACs with High Antimicrobial Potency. ChemistrySelect 2019. [DOI: 10.1002/slct.201901708] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Andrei V. Bogdanov
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Ilyuza F. Zaripova
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Alexandra D. Voloshina
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Anastasia S. Sapunova
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Natalia V. Kulik
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Sergey V. Bukharov
- Kazan National Research Technological University Kazan 420015 Russian Federation
| | - Julia K. Voronina
- N. S. Kurnakov Institute of General and Inorganic Chemistry, RAS, 31 Leninsky Av. Moscow 119991 Russian Federation
| | - Alexander E. Vandyukov
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| | - Vladimir F. Mironov
- A.E.Arbuzov Institute of Organic and Physical ChemistryFRC Kazan Scientific Center of RAS, 8 Arbuzov str. Kazan 420088 Russian Federation
| |
Collapse
|