Stereoretentive Halogenations and Azidations with Titanium(IV) Enabled by Chelating Leaving Groups
作者:Salvatore D. Lepore、Deboprosad Mondal、Song Ye Li、Anjan K. Bhunia
DOI:10.1002/anie.200802472
日期:2008.9.15
Rapid Conversion of Hindered Arylsulfonates to Alkyl Chlorides with Retention of Configuration
作者:Salvatore D. Lepore、Anjan K. Bhunia、Deboprosad Mondal、Pamela C. Cohn、Craig Lefkowitz
DOI:10.1021/jo052333q
日期:2006.4.1
Arylsulfonates of hindered secondary alcohols are converted to the corresponding alkyl chlorides very rapidly and in good yields in the presence of titanium tetrachloride at low temperatures. These reactions proceed with exclusive retention of configuration.