Jacobsen Protocols for Large-Scale Epoxidation of Cyclic Dienyl Sulfones: Application to the (+)-Pretazettine Core
作者:G. Reza Ebrahimian、Xavier Mollat du Jourdin、Philip L. Fuchs
DOI:10.1021/ol300996m
日期:2012.5.18
A Jacobsen epoxidation protocol using H2O2 as oxidant was designed for the large-scale preparation of various epoxy vinyl sulfones. A number of cocatalysts were screened, and pH control led to increased reaction rate, higher turnover number, and improved reliability.
设计了一种以H 2 O 2为氧化剂的Jacobsen环氧化方案,用于大规模制备各种环氧乙烯基砜。筛选了许多助催化剂,控制pH值可提高反应速率,提高周转次数并提高可靠性。