Tetrahydrobenzo[a]xanthen-11-ones have been synthesized using 50% nano-TiCl4/SiO2 as a reusable,
inexpensive, and efficient Lewis acid catalyst. Short reaction times, high yields, scale up, and easy work-up are the
advantages of this protocol.
使用50%的纳米TiCl4/SiO2作为可重复使用、廉价且高效的
路易斯酸催化剂合成了四氢苯并[a]喹
氨酮。该方法的优点包括反应时间短、产率高、易于放大及简单的后处理。