A comparative study of the epoxidation of 2-substituted isoflavones by dimethyldioxirane, sodium hypochlorite, and alkaline hydrogen peroxide (weitz-scheffer reaction)
作者:Albert Lévai、Tamás Patonay、Andrea Székely、Erzsébet B. Vass、Waldemar Adam、József Jekö
DOI:10.1002/jhet.5570370507
日期:2000.9
The comparative epoxidation of 2-substituted isoflavones 9–16 has been conducted by the utilization of three different protocols, viz. epoxidation with isolated dimethyldioxirane (Method A), with sodium hypochlorite (Method B), and with alkaline hydrogen peroxide (Method C), to afford epoxides 17–24. Best results have been obtained with Method C (Weitz-Scheffer epoxidation). The structures of epoxides
2-取代异黄酮9-16的比较环氧化反应是通过利用三种不同的方法进行的,即。用分离的二甲基二环氧乙烷(方法A),次氯酸钠(方法B)和碱性过氧化氢(方法C)进行环氧化,得到环氧化物17-24。使用方法C(Weitz-Scheffer环氧化)已获得最佳结果。环氧化物的结构已基于核磁共振光谱和质谱数据确定。