《Two isostructural 3-(5-aryloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-(thiophen-2-yl)prop-2-en-1-ones: disorder and supramolecular assembly》 was written by Shaibah, Mohammed A. E.; Yathirajan, Hemmige S.; Manju, Nagaraj; Kalluraya, Balakrishna; Rathore, Ravindranath S.; Glidewell, Christopher. Application of 88-15-3 And the article was included in Acta Crystallographica, Section E: Crystallographic Communications in 2020. The article conveys some information:
Two new chalcones containing both pyrazole and thiophene substituents have been prepared and structurally characterized. 3-(3-Methyl-5-phenoxy-1-phenyl-1H-pyrazol-4-yl)-1-(thiophen-2-yl)prop-2-en-1-one, C23H18N2O2S (I), and 3-[3-methyl-5-(2-methylphenoxy)-1-phenyl-1H-pyrazol-4-yl]-1-(thiophen-2-yl)prop-2-en-1-one, C24H20N2O2S (II), are isomorphous as well as isostructural, and in each the thiophene substituent is disordered over two sets of at. sites having occupancies 0.844 (3) and 0.156 (3) in (I), and 0.883 (2) and 0.117 (2) in (II). In each structure, the mols. are linked into sheets by a combination of C-H···N and C-H···O hydrogen bonds. Comparisons are made with some related compounds In the experiment, the researchers used 1-Thiophen-2-yl-ethanone(cas: 88-15-3Application of 88-15-3)
1-Thiophen-2-yl-ethanone(cas: 88-15-3) belongs to thiophenes. Specialized thiophenes can be synthesized similarly using Lawesson’s reagent as the sulfidizing agent, or via the Gewald reaction, which involves the condensation of two esters in the presence of elemental sulfur. Another method is the Volhard–Erdmann cyclization. Application of 88-15-3
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem