In the title compound, C(26)H(22)F(2)O(2), the cyclo-propane ring makes dihedral angles of 47.6 (2), 51.3 (2) and 63.9 (2)° with the 2-fluoro-substituted phenyl ring, the unsubstituted phenyl ring and the 4-fluoro-substituted phenyl ring, respectively. There is a short C-H⋯F contact in the molecule. In the crystal, weak C-H⋯F hydrogen bonds lead to chains of mol-ecules extending along the b-axis direction.
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http://dx.doi.org/10.1107/S1600536813000032 | DOI Listing |
Org Biomol Chem
January 2025
Department of Chemistry, Faculty of Arts and Science, Middle East Technical University, 06800 Ankara, Turkey.
In this paper, we have uncovered a new reaction of -homopropargylic β-enaminones, -(4-phenyl-3-butynyl)-β-enaminones. When subjected to a reaction with excess molecular iodine or -iodosuccinimide in the presence of cesium carbonate, -homopropargylic β-enaminones afford 6,7-dihydrofuro[3,4-]pyridines in low to moderate yields. The generation of two new C/O-C bonds during the reaction leads to the construction of unknown heterobicyclic 5,6-fused ring systems.
View Article and Find Full Text PDFJ Org Chem
January 2025
School of Pharmacy, Hangzhou Medical College, 8 Yikang Road, Hangzhou 311300, PR China.
A Fe-catalyzed hydrocyclization reaction of unactivated alkenes was developed, utilizing PhSiH as the hydrogen source, yielding 2,3-dihydroquinazolinone (DHQZ) derivatives in moderate to good yields. Notably, when the substrate was switched to -cyano--(2-(prop-1-en-2-yl)phenyl)benzamides, the reaction yielded only the unreduced products. Mechanistic studies revealed that the intramolecular addition of the in situ formed radical to the unactivated alkene results in the formation of the fused ring.
View Article and Find Full Text PDFRSC Adv
January 2025
School of Chemistry and Chemical Engineering, Yan'an University Yan'an 716000 P.R. China
Pyrazoles are an important class of five-membered nitrogen heterocyclic compounds that have been widely used in agriculture and medicine. Exploring their synthesis methods under mild conditions has always been a hot research topic. Herein, a new strategy was developed to enhance the activity of a zirconium metal centre for the synthesis of -acylpyrazole derivatives using CpZrCl as a pre-catalyst.
View Article and Find Full Text PDFChemistry
January 2025
The University of Electro-Communications: Denki Tsushin Daigaku, Department of Engineering Science, JAPAN.
(6,5)-enriched single-walled carbon nanotubes (SWCNTs) were reductively arylated using sodium naphthalenide and monosubstituted and disubstituted iodobenzene derivatives to control their photoluminescence (PL) properties. In the reactions with substituted iodobenzenes, the degree of functionalization was influenced by the substituents on the aryl groups depending on their position, which allowed us to realize control of the PL intensity. The substituents at the 2-position and methyl groups at the 3,5-positions of the phenyl group respectively increased the E11** PL and E11* PL selectivity at ~1230 and ~1100 nm.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Chemistry, Faculty of Science, Cairo University, Cairo, Egypt.
This paper addresses the enhancement of formic acid electrooxidation (FAO) at Pt and Pt-NiOx nanoparticles based-catalysts assisted with urea derivatives as blending fuels. Blending formic acid with various ratios of urea derivatives showed noticeable enhancements of FAO as demonstrated by a favorable negative shift of its onset potential (E) and increase of its peak current density concurrently with suppression of the amount of CO poisoning reaction intermediate. Among all the used derivatives, phenyl urea (PU) showed superior enhancing effect towards the direct FAO with a minimal CO formation together with a favorable negative shift of E by 150 mV.
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