50899-82-6Relevant academic research and scientific papers
Reaction of 4-hydroxy-2-quinolones with thionyl chloride-preparation of new spiro-benzo[1,3]oxathioles and their transformations
Klásek, Antonín,Rudolf, Ond?ej,Rouchal, Michal,Ly?ka, Antonín,R??i?ka, Ale?
, p. 492 - 499 (2013/07/27)
4-Hydroxy-2-quinolones (1) react with thionyl chloride to give new spiro-benzo[1,3]oxathioles (3) and bis(4-hydroxy-2-quinolone-3-yl)sulfides (2) and small quantities of 3-chloro-4-hydroxyquinolin-2-ones (4). Compounds 3 afford sulfides 2 by heating in di
Substitution and Addition Reactions at Spiro-Oxiranes
Siegel, Hannes,Wittmann, Helga
, p. 1005 - 1018 (2007/10/02)
Nucleophilic substitution at the spiro carbon atom as well as the CH2-group takes place with spiro-oxiranes 1, 6 and 7, whose spiro carbon atom bear electron withdrawing substituents.In some cases by elimination of formaldehyde a transformation to the cor
