Adducts AlCl3.RCOCl undergo highly regioselective self- and cross-condensation. 4-Hydroxy-2-pyrones and 2-acetyl-indan-1,3-diones are synthesized in good yields.
New Direct Synthesis of Persubstituted 4-Hydroxy-2-pyrones
作者:Giovanni Sartori、Franca Bigi、Davide Baraldi、Raimondo Maggi、Giuseppe Casnati、Xiaochun Tao
DOI:10.1055/s-1993-25952
日期:——
The synthesis of a series of persubstituted 4-hydroxy-2-pyrones 6 by regioselective "one-pot" cyclotrimerization of aliphatic acyl chlorides promoted by aluminum chloride is reported.