aldol reaction

The ring-opening polymerization mechanism of lactide in the presence of hydroxyl compounds was studied by using ferric ethoxide and ferric n-butoxide as catalysts respectively.这些结果表明在含羟基化合物的丙交酯/醇铁聚合体系中,羟基化合物作为共引发剂参与了丙交酯的开环聚合。dtQ汉语字典

In this paper,the development of the allylic group used as protecting group has been introduced,the selective protection of allylic to different hydroxy groups of multihydroxy compounds has been reviewed,the mechanisms and methods of formation and removal of allylic protecting groups has.本文介绍了烯丙基保护基的发展历史 ,综述了烯丙保护基对多羟基化合物中不同羟基的选择性保护应用 ,并阐述了烯丙保护基的引入和脱除的机理及方dtQ汉语字典

Through the thermal satbility comparison between three different kinds of solid phytase, we found that the phytase pellets made by polyhydroxy compounds had the bes.植酸酶液经过多羟基化合物颗粒化处理后,其酶制剂的高温热稳定性比液体酶或普通固体化处理的植酸酶制剂提高50%。