Table 1 extent of escaped acetal and comparative viscidity of different chitosans .
不同种类的壳聚糖的脱乙酰化程度和相对黏度。
Butyraldehyde glycol acetal was synthesized from butyraldehyde and glycol by using iodine as catalyst .
以单质碘为催化剂，通过丁醛和乙二醇反应合成了丁醛乙二醇缩醛。
The classification and application of a polymer-supported lewis acid catalysts in organic synthesis , including esterfication , transesterification , synthesis of acetal and ketal , friedel-craft 's alkylation , eterification and rearrangment reaction of pinacol , etc. are in troduced .
