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Intermolecular Interactions of 3,5-bis(4-Methoxyphenyl)-4,5-dihydro-1H-pyrazole-1-carbothioamide in a Cocrystal with 1,3-bis(4-Methoxyphenyl)prop-2-en-1-one and Dimethylformamide Solvate. CRYSTALS 2022. [DOI: 10.3390/cryst12050663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Two new multicomponent crystals consisting of 3,5-bis(4-methoxyphenyl)-4,5-dihydro-1H-pyrazole-1-carbothioamide (1) with 1,3-bis(4-methoxyphenyl)prop-2-en-1-one (2) and with dimethylformamide (DMF), both in 1:1 ratio, prepared and structurally characterized. The occurrence of 1 in different crystal structures enabled a comparison of hydrogen bonding contacts between the two structures as well as with the known structure of pure 1. The backbone of molecule 1 was similar in the structures but the orientation of the methoxy groups varied. Molecule 1 was involved in various combinations of the possible hydrogen bonding contacts, including N–H…O=C, N–H…OMe, and N–H…S. Both N–H hydrogens in the cocrystal (1–2) and the solvate (1-DMF) participated in hydrogen bonding but only one hydrogen atom took part in the structure of pure 1. The S atom accepted contacts in both the structures of pure 1 and cocrystal 1–2 but not in that of the 1-DMF solvate. The oxygen atoms of both methoxy groups acted as acceptors in the structure of pure 1, whereas one oxygen was involved in the 1-DMF solvate and none in cocrystal 1–2.
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Mohamed HA, Khidre RE, Kariuki BM, El‐Hiti GA. Synthesis of novel heterocycles using 1,2,3‐triazole‐4‐carbohydrazides as precursors. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3840] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Hanan A. Mohamed
- Applied Organic Chemistry DepartmentNational Research Center Dokki, Giza Egypt
- Department of Chemistry, College of Science and HumanitiesShaqra University Duwadimi Saudi Arabia
| | - Rizk E. Khidre
- Chemical Industries DivisionNational Research Center Dokki, Giza Egypt
- Chemistry Department, Faculty of ScienceJazan University Jazan Saudi Arabia
| | | | - Gamal A. El‐Hiti
- Cornea Research Chair, Department of Optometry, College of Applied Medical SciencesKing Saud University Riyadh Saudi Arabia
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Mohamed HA, Alotaibi MH, Kariuki BM, El-Hiti GA. Convenient Synthesis of New Heterocycles Containing the Quinoxaline Ring System. LETT ORG CHEM 2020. [DOI: 10.2174/1570178616666190311161505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
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The aim of the current article was to describe simple procedures for the synthesis of new
heterocycles incorporating the quinoxaline moiety using benzene-1,2-diamine and quinoxaline-2,3-
dithiol as precursors. Simple synthetic methods are described for the synthesis of new heterocycles using
commercially available chemicals. Also, the new compounds were determined using analytical and
spectroscopic methods including single X-ray crystal structures. A series of new heterocycles containing
the quinoxaline nucleus have been synthesized in good yields using simple and convenient procedures.
A process has been described for the synthesis of new heterocycles containing the quinoxaline
moiety that might be difficult to synthesize by other routes.
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Affiliation(s)
- Hanan A. Mohamed
- Applied Organic Chemistry Department, National Research Centre, Dokki, Giza, Egypt
| | - Mohammad Hayal Alotaibi
- National Center for Petrochemicals Technology, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia
| | - Benson M. Kariuki
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Gamal A. El-Hiti
- Department of Optometry, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia
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Khidre RE, Mohamed HA, Kariuki BM, El-Hiti GA. Facile, mild and efficient synthesis of azines using phosphonic dihydrazide. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2019.1633531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Rizk E. Khidre
- Chemical Industries Division, National Research Centre, Dokki, Giza, Egypt
- Chemistry Department, Faculty of Science, Jazan University, Jazan, Saudi Arabia
| | - Hanan A. Mohamed
- Applied Organic Chemistry Department, National Research Center, Dokki, Giza, Egypt
- Department of Chemistry, College of Science and Humanities, Shaqra University, Duwadimi, Saudi Arabia
| | | | - Gamal A. El-Hiti
- Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Baashen MA. A Simple and Efficient Process for the Synthesis of Novel Heterocycles Containing Benzofuran Moiety Using Thiocarbohydrazide as a Precursor. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3574] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mohammed A. Baashen
- Department of Chemistry, College of Science and HumanitiesShaqra University Dawadmi Saudi Arabia
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Synthesis and Structure Elucidation of N′-(4-Methoxybenzylidene)-5-methyl-1-phenyl-1H-1,2,3-triazole-4-carbohydrazide. MOLBANK 2018. [DOI: 10.3390/m1034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
N′-(4-Methoxybenzylidene)-5-methyl-1-phenyl-1H-1,2,3-triazole-4-carbohydrazide (3) was synthesized in a yield of 88% from an acid-catalyzed reaction of 5-methyl-1-phenyl-1H-1,2,3- triazole-4-carbohydrazide and 4-methoxybenzaldehyde in ethanol under reflux for 2.5 h. The structure of 3 was confirmed by the data obtained from infrared, nuclear magnetic resonance, mass spectroscopy, single crystal X-ray diffraction, and microanalysis.
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Affiliation(s)
- Mohammed Baashen
- Department of Chemistry, College of Science and Humanities, Shaqra University, Dawadmi, Saudi Arabia
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