24743-63-3Relevant academic research and scientific papers
Pyridine-Catalysed Desulfonylative Addition of β-Diketones to Arylazosulfones via Diaziridine Rearrangement
Ji, Xin,Meng, Ling-Guo,Xu, Hailong,Wang, Lei
supporting information, p. 1142 - 1146 (2020/12/31)
A pyridine-catalysed desulfonylative addition of β-diketones to arylazosulfones was developed to obtain diazenyl β-dicarbonyl compounds. The aryldiazenyl group was observed in the desired product from arylazosulfones, and this diazenylation reaction was achieved via a possible rearrangement process based on diaziridine ring cleavage. The scope of the protocol was investigated and a plausible mechanism was given. (Figure presented.).
Aryldiazenyl Radicals from Arylazo Sulfones: Visible Light-Driven Diazenylation of Enol Silyl Ethers
Othman Abdulla, Havall,Scaringi, Simone,Amin, Ahmed A.,Mella, Mariella,Protti, Stefano,Fagnoni, Maurizio
supporting information, p. 2150 - 2154 (2020/03/04)
A versatile protocol for the diazenylation of enol silyl ethers under visible light irradiation is presented herein. The reaction is based on the underused reaction of a nitrogen-based radical (the diazenyl radical) with an enol silyl ether. Arylazo sulfones were used as photoactivatable precursors of these diazenyl radicals. The resulting azaderivatives are potentially bioactive compounds as well as starting materials for the synthesis of N-containing heterocycles. (Figure presented.).
Predominance of 2-arylhydrazones of 1,3-diphenyl-propane-1,2,3-trione over its proton-transfer products
Gawinecki, Ryszard,Kolehmainen, Erkki,Janota, Henryk,Kauppinen, Reijo,Nissinen, Maija,Osmialowski, Borys
, p. 797 - 803 (2007/10/03)
2-Phenylhydrazones of 1,3-diphenyl-1,2,3-trione are the dominant tautomeric form detected in chloroform solution by 15N NMR chemical shifts. The substituent in the phenylhydrazone moiety does not affect this tautomeric preference. The substituent effect is transmitted effectively only to the hydrazone nitrogen and hydrogen atoms. Ab initio calculations show that the ketohydrazone tautomer is really very much favoured over its proton-transfer products in chloroform solution. The same tautomer was also detected in the crystal state by X-ray crystallography. Copyright
SYNTHESIS OF PYRIDINE-2(1H)-THIONE AND THIENOPYRIDINE DERIVATIVES
Elgemeie, Galal E. H.,Alnaimi, Ibrahim S.,Alarab, Hafsa F.
, p. 1721 - 1728 (2007/10/02)
A synthesis of pyridine-2(1H)-thiones and thienopyridines utilizing cyanothioacetamide and 2-arylhydrazono-1,3-diphenylpropane-1,3-diones as starting components is described.
