was used as an efficient, green, and inexpensive catalytic system for synthesis of 12-aryl or 12-alkyl-8,9,10,12-tetrahydro-11H-benzo[a]xanthen-11-one derivatives via a one-pot three-component reaction of aldehydes, 2-naphthol, and cyclic 1,3-dicarbonyl compounds. The reactions proceeded rapidly at 80 °C undersolvent-freeconditions and the desired products were obtained in good to excellent yields.
摘要HBF 4 / SiO 2被用作合成12-芳基或12-烷基-8,9,10,12-四氢-11 H-苯并[ a ]黄原-11-酮的高效,绿色且廉价的催化体系醛,2-萘酚和环状1,3-二羰基化合物的一锅三组分反应生成的衍生物。反应在无溶剂条件下于80°C迅速进行,并以良好至极好的收率获得了所需的产物。 图形概要