Construction of Annulated Spiro[4.4]-nonane-diones via the Tandem [4 + 2]-Cycloaddition/Aromatization Reaction
作者:Konstantin S. Ivanov、Denis E. Samburskiy、Leila V. Zargarova、Vladislav Yu. Komarov、Evgeny A. Mostovich
DOI:10.1021/acs.joc.3c00981
日期:2023.8.4
A method for the synthesis of both symmetric and asymmetric fused spiro[4.4]-nonane-dione derivatives has been developed. It is based on a Diels–Alderreaction of spiro[4.4]nona-2,7-diene-1,6-dione as a dienophile component followed by immediate aromatization of the adduct. An active diene component can be generated using the tetrabromoxylene/NaI system, the 1,3-diphenylisobenzofuran/BF3 system, or
Über die Synthese von Aryl-ketolen durch Addition von aromatischen Kohlenwasserstoffen in der Diacetylreihe (Carbonylgruppen und arom. Kohlenwasserstoffe, 2. Mitt.)