Efficient Dehydrative Sialylation of C-4-Aminated Sialyl-Hemiketal Donors with Ph<sub>2</sub>SO/Tf<sub>2</sub>O
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An efficient approach to the dehydrative sialylation of various substrates with C-4-aminated sialyl-hemiketal donors by using the reagent combination of diphenyl sulfoxide and triflic anhydride is reported. By using a C-4-hindered non-nucleophilic amine auxiliary, excellent yields and high α-stereoselectivities were obtained for coupling with a wide range of primary and secondary acceptors.
创建时间：
2016-02-26
