35813-96-8Relevant articles and documents
Copper-Catalyzed One-Pot Synthesis of 2-Arylthiochromenones: An in Situ Recycle of Waste Byproduct as Useful Reagent
Sangeetha, Subramani,Sekar, Govindasamy
, p. 75 - 79 (2019/01/04)
Copper-catalyzed one-pot synthesis of various 2-arylthiochromenones is developed using xanthate as an odorless sulfur source from easily acquirable 2′-halochalcones. This methodology demonstrates that the cross-coupled product thiochromanone synthesized from 2′-halochalcones (upstream reaction) is oxidized to thiochromenone (downstream reaction) in the same pot using waste byproduct (KI) of the first step as powerful oxidant molecular iodine (I2). This one-pot synthesis has been further extended for the synthesis of 3,3′-methylenebisthioflavone using dimethyl sulfoxide (DMSO) as solvent and methylene source.
A Convenient Synthesis of 2-Phenylbenzothiopyrylium Perchlorates
Nakazumi, Hiroyuki,Ueyama, Tamio,Endo, Takashi,Kitao, Teijiro
, p. 1251 - 1252 (2007/10/02)
2-Phenylbenzothiopyrylium perchlorates were conveniently prepared in good yields by reduction of 2-phenyl-4H-benzothiopyran-4-ones (thioflavones) with aluminium hydride, followed by treatment with acid in the presence of 2,3-dichloro-5,6-dicyano-p-b