Chemistry of 1, 3-diarylpropynones in superacids

…, S Walspurger, M Haouas, J Sommer, P Pale…

Index: Vasilyev; Walspurger; Haouas; Sommer; Pale; Rudenko Organic and Biomolecular Chemistry, 2004 , vol. 2, # 23 p. 3483 - 3489

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Citation Number: 28

Abstract

In superacids with H0=− 14 to− 20, it has been found that 1, 3-diarylpropynones ArCCCOAr′ are either protonated on oxygen of carbonyl groups with the formation of stable ions ArCCC (O+ H) Ar′ or undergo further transformations when the highly conjugated system is electron-rich enough. In the latter case, 3-arylindenones are produced very rapidly and with high efficiency (up to 95% yield in less than 30 min). The influence of ...