Brønsted Acidic Ionic Liquid as an Efficient and Reusable Catalyst for Synthesis of 14-Aryl- or 14-Alkyl-14H-dibenzo[a,j]xanthenes under Solvent-Free Conditions
作者:Abdol Hajipour、Yosof Ghayeb、Nafisehsadat Sheikhan、Arnold Ruoho
DOI:10.1055/s-0029-1219399
日期:2010.3
and efficient method has been developed for the preparation of 14-aryl- or 14-alkyl-14H-dibenzo[a,j]xanthenes from one-pot condensation of aldehydes with 2-naphthol using catalytic amount of Bronsted acidic ionic liquid ([TEBSA][HSO 4 ]) under thermal solvent-free conditions. Excellent yields, short reaction times, easy workup and reusability of the catalyst as well as solvent-free conditions are advantages
已经开发了一种温和有效的方法,用于使用催化量的布朗斯台德酸性离子液体从醛与 2-萘酚的一锅缩合制备 14-芳基-或 14-烷基-14H-二苯并[a,j]呫吨( [TEBSA][HSO 4 ]) 在无热溶剂条件下。该方法的优点是收率高、反应时间短、催化剂易于处理和可重复使用以及无溶剂条件。