Perkin communications. Improved synthesis of secondary hydroperoxides from alcohols
摘要:
Secondary hydroperoxides have been prepared from secondary alcohols by conversion of the alcohol into its mesylate and subsequent reaction with anhydrous hydrazine followed by hydrogen peroxide and sodium peroxide.
<i>C</i>-Glycosylation Reactions of Sulfur-Substituted Glycosyl Donors: Evidence against the Role of Neighboring-Group Participation
作者:Matthew G. Beaver、Susan B. Billings、K. A. Woerpel
DOI:10.1021/ja0767783
日期:2008.2.1
substitution reactions of C-4 sulfur-substituted tetrahydropyran acetals revealed that neighboring-group participation does not control product formation. Spectroscopic evidence for the formation of an intermediate sulfonium ion is provided, as are data from nucleophilic substitution reactions demonstrating that products are formed from oxocarbenium ion intermediates. The selectivity was not sensitive