The present work explores a highly efficient, environmental friendly, green protocol for the synthesis of chromen-2-one derivatives (3a-m) by the condensation of salicylaldehydes with various active methylene compounds using zirconium (IV) oxychloride as catalyst. This is a convenient and rapid method for Knoevenagel condensation and this methodology offers several advantages including shorter reaction
本工作探索了一种高效、环境友好、绿色的方案,以
氯氧化锆(IV)为催化剂,通过
水杨醛与各种活性亚甲基化合物的缩合合成色烯-2-酮衍
生物(3a-m)。这是一种方便、快速的克诺文格尔缩合方法,该方法具有反应时间短、条件温和、催化剂便宜、操作程序简单等优点,并且能够以优异的收率获得所需的产物。所有合成化合物的结构均通过光谱数据得到证实。