作者:Pallab Pahari、Bidyut Senapati、Dipakranjan Mal
DOI:10.1016/j.tetlet.2007.01.159
日期:2007.4
4-Fluorocyclohexa-2,5-dienones are introduced as new acceptors for the Hauser annulation. In cases where the corresponding methoxy analogs fail to undergo annulation, the former smoothly do so with phenylsulfonyl phthalides to furnish anthraquinones in good yields. Steric effects are implicated to explain the inertness of the methoxy analogs.
引入4-氟环己基2,5-二壬烯作为豪瑟环化反应的新受体。在相应的甲氧基类似物不能进行环合的情况下,前者可以与苯磺酰邻苯二甲酸酯一起顺畅地进行,从而以高收率提供蒽醌。涉及立体效应来解释甲氧基类似物的惰性。