对κ-卡拉胶进行酸降解得到三种卡拉胶低聚糖,并进一步与苯二甲酰基合成制得三种分子量分别为1450、2520和3430的κ-卡拉胶邻苯二......

Vilsmeier reagent formed from phthaloyl dichloride and DMF was found to be very effective for converting 2-hydroxyacetop......

An environmentally benign and practical preparation method for the Vilsmeier-Haack reagent (VH) has been developed by us......