Reductive lithiation of alkyl phenyl sulfides in diethyl ether. A ready access to α,α-dialkylbenzyllithiums
作者:Constantinos G. Screttas、Georgios A. Heropoulos、Maria Micha-Screttas、Barry R. Steele、Dimitrios P. Catsoulacos
DOI:10.1016/s0040-4039(03)01371-6
日期:2003.7
Diethyl ether is a convenient solvent for the conversion of benzylic phenyl sulfides to the corresponding organolithiums by an uncatalyzed reductive metalation, while catalysis by naphthalene is required to achieve the same reaction for alkyl phenyl sulfides. The addition of magnesium 2-ethoxyethoxide to solutions of unstable alkyllithiums prepared in this way provides storable reagents.
乙醚是通过未催化的还原性
金属化将苄基苯基
硫化物转化为相应的
有机锂的方便溶剂,而为实现烷基苯基
硫化物的相同反应,则需要用
萘进行催化。将2-乙氧基乙氧基
镁添加到以此方式制备的不稳定烷基
锂的溶液中提供了可储存的试剂。