The Reaction of Nitrile Oxide-Quinone Cycloadducts. IV. Acid-Catalyzed Dealkylative Aromatization of the 1 : 1 -C=C-Adducts and Base-Induced Rearrangement Products of Aromatic Nitrile Oxides with 2,5- and 2,6-Dialkyl-<b><i>p</i></b>-benzoquinones
作者:Takashi Mukawa、Jun Muraoka、Shinsaku Shiraishi
DOI:10.1246/bcsj.73.739
日期:2000.3
give isoxazole-fused hydroquinone diacetates in good yields. The base-induced rearrangement products from some of the 1,3-dipolar cycloadducts were treated with acetic anhydride/sulfuric acid to afford isoxazole-fused catechol diacetates and/or isoxazole-fused hydroquinone diacetates, depending on the slight difference in the substituents of the base-induced rearrangement products. The differences in the