| abstract |
The invention discloses a preparation method of acetal or ketal compound. The preparation method comprises: shaking the aldehyde or ketone, alcohol and catalyst at 60° C., and performing post-treatment after the reaction is completed to obtain the acetal compound; The catalyst comprises: α-chymotrypsin; the aldehyde or ketone has the structure shown in compound A, R 1 and R 2 are each independently selected from aryl, H or alkyl; the alcohol has the structure shown in compound B The structure of R 3 is selected from saturated alkanes. The preparation method of the present invention is catalyzed by α-chymotrypsin, has mild reaction conditions, simple operation process, low cost and environmental protection, and has application value for popularization. |