Kinetic separation of trans-limonene oxide and trans-carvomenthene oxide was achieved in high yield by selective ring opening of their cis-epoxides in the presence of InCl3 catalyst in water. Catalytic activity of InCl3 was conserved up to 10 cycles. Nucleophilic addition of methanol in presence of InCl3 was also selective as cis-epoxides preferentially reacted leaving behind trans-epoxides, which were separated by fractional distillation.
通过在
水中使用InCl3催化剂选择性开环其顺式
环氧化物,实现了对反式
柠檬烯氧化物和反式卡尔沃薄荷烯氧化物的动力学分离,并获得高产率。在进行10个循环后,InCl3的催化活性得以保持。在InCl3存在下,
甲醇的亲核加成也是选择性的,因为顺式
环氧化物优先反应,留下了反式
环氧化物,然后通过分馏进行分离。