3883-64-5Relevant articles and documents
An improved method for the synthesis of γ-lactones using sodium bromate and sodium hydrogen sulfite
Hayat, Safdar,Atta-ur-Rahman,Choudhary, M. Iqbal,Khan, Khalid Mohammed,Bayer, Ernst
, p. 1647 - 1649 (2001)
o-Alkylbenzenecarboxylic acids are treated with a sodium bromate and sodium hydrogen sulfite reagent under a two-phase system using ethyl acetate as solvent, under mild conditions to give the corresponding cyclized phthalides in moderate to satisfactory yield. Intermediately the α-brominated alkylbenzenecarboxylic acids are formed by the in situ generated hypobromous acid. These α-brominated acids undergo an intramolecular nucleophilic substitution reaction to afford the corresponding γ-lactones.
Synthesis, X-ray structure, electrochemical properties and cytotoxic effects of new arene ruthenium(II) complexes
Pastuszko, Adam,Niewinna, Karolina,Czyz, Malgorzata,Jó?wiak, Andrzej,Ma?ecka, Magdalena,Budzisz, Elzbieta
, p. 64 - 70 (2013/10/01)
A series of novel half-sandwich organoruthenium(II) complexes with the general formula [(η6-arene)Ru(L)Cl2] (where L = flavone, chromone or benzofuranone derivatives) have been synthesized. All the ligands in the reaction with [(η6-p-cymene)RuCl) 2(μ-Cl)2] form monodentate compounds, which were fully characterized by elemental analysis, MS, UV-Vis, IR and NMR spectroscopy. The molecular structure of one of the complexes [(η6-p-cymene)Ru(7- amino-3H-benzofuran-1-one-κ1-N)Cl2] was determined by X-ray crystallography. The redox properties of the complexes were monitored by cyclic voltammetry. The cytotoxicity of all obtained compounds has also been evaluated on several melanoma and leukemic cell lines.
Fast microwave promoted palladium-catalyzed synthesis of phthalides from bromobenzyl alcohols utilizing DMF and Mo(CO)6 as carbon monoxide sources
Wu, Xiongyu,Mahalingam,Wan, Yiqian,Alterman, Mathias
, p. 4635 - 4638 (2007/10/03)
A fast method utilizing in situ generated CO for the synthesis of phthalides has been developed. DMF and Mo(CO)6 were applied as two alternative CO-sources in these microwave promoted carbonylation-lactone formation reactions. Mo(CO)6 was found to be the more generally applicable CO-source and provided phthalides as well as dihydroisocoumarin, dihydroisoindone, and phthalimide from the corresponding aryl bromide via an efficient CO insertion within a 1h reaction time.