253342-51-7Relevant articles and documents
Protonation and cyclization of 1,3-diarylpropynones in superacids
Vasil'ev,Walspurger,Pale,Sommer,Haouas,Rudenko
, p. 1769 - 1778 (2007/10/03)
1,3-Diarylpropynones ArC≡CCOAr′ in superacids with H 0 ranging from -20 to - 14 undergo protonation at the carbonyl oxygen atoms to give stable ArC≡CC(O+H)Ar′ ions or at the acetylenic C2 atom with formation of reactive Ar
A new, fast and efficient synthesis of 3-aryl indenones: Intramolecular cyclization of 1,3-diarylpropynones in superacids
Vasilyev, Aleksander V.,Walspurger, Stéphane,Pale, Patrick,Sommer, Jean
, p. 3379 - 3381 (2007/10/03)
1,3-Diarylpropynones were cleanly converted to the corresponding 3-arylindenones in various superacidic media. This new, simple, one-pot reaction proved to be efficient (yields up to 95%) and very fast (reaction time less than 30min).