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Jadhao NL, Musale HB, Gajbhiye JM, Humne VT. Copper-mediated [3 + 2] oxidative cyclization of oxime acetate and its utility in the formal synthesis of fentiazac. Org Biomol Chem 2024; 22:521-528. [PMID: 38087933 DOI: 10.1039/d3ob01882b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
A new protocol for the direct synthesis of 2-aminothiazole has been developed from oxime acetate and readily available sodium thiocyanate using a copper catalyst. The present transformation has good functional group tolerance. Various thiazoles were smoothly synthesized in good to excellent yields. The applicability of the present method has been extended to the formal synthesis of the non-steroidal and anti-inflammatory drug, fentiazac via the Sandmeyer reaction and Suzuki coupling.
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Affiliation(s)
- Nitin L Jadhao
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune, 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Harish B Musale
- Department of Chemistry, Shri R. R. Lahoti Science College, Morshi, 444905, India.
| | - Jayant M Gajbhiye
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune, 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Vivek T Humne
- Department of Chemistry, Shri R. R. Lahoti Science College, Morshi, 444905, India.
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Abu-Rayyan A, Al Jahdaly BA, AlSalem HS, Alhadhrami NA, Hajri AK, Bukhari AAH, Waly MM, Salem AM. A Study of the Synthesis and Characterization of New Acrylamide Derivatives for Use as Corrosion Inhibitors in Nitric Acid Solutions of Copper. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3685. [PMID: 36296875 PMCID: PMC9611118 DOI: 10.3390/nano12203685] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
The objective of this research was to explore the impact of corrosion inhibition of some synthetic acrylamide derivatives 2-cyano-N-(4-hydroxyphenyl)-3-(4-methoxyphenyl)acrylamide (ACR-2) and 2-cyano-N-(4-hydroxyphenyl)-3-phenylacrylamide (ACR-3) on copper in 1.0 M nitric acid solution using chemical and electrochemical methods, including mass loss as a chemical method and electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PP) as electrochemical methods. By Fourier-transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1HNMR), and mass spectroscopy (MS) methods, the two compounds were verified and characterized. There is evidence that both compounds were effective corrosion inhibitors for copper in 1.0 M nitric acid (HNO3) solutions, as indicated by the PP curves, which show that these compounds may be considered mixed-type inhibitors. With the two compounds added, the value of the double-layer capacitance was reduced. In the case of 20 × 10-5 M, they reached maximum efficiencies of 84.5% and 86.1%, respectively. Having studied its behavior during adsorption on copper, it was concluded that it follows chemical adsorption and Langmuir isotherm. The theoretical computations and the experimental findings were compared using density functional theory (DFT) and Monte Carlo simulations (MC).
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Affiliation(s)
- Ahmed Abu-Rayyan
- Chemistry Department, Faculty of Arts & Science, Applied Science Private University, P.O. Box 166, Amman 11931, Jordan
| | - Badreah Ali Al Jahdaly
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, P.O. Box 24230, Makkah 21955, Saudi Arabia
| | - Huda S. AlSalem
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Nahlah A. Alhadhrami
- Chemistry Department, Faculty of Science, Taibah University, P.O. Box 30002, Medina 42353, Saudi Arabia
| | - Amira K. Hajri
- Department of Chemistry, University College Alwajh, University of Tabuk, Tabuk 71421, Saudi Arabia
| | | | - Mohamed M. Waly
- Department of Chemistry, Faculty of Science, New Mansoura University, Mansoura 35516, Egypt
| | - Aya M. Salem
- Department of Basic Science, Higher Institute of Electronic Engineering (HIEE), Belbis 11621, Egypt
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