The Beckmannrearrangement of oximesulfonates by Grignard reagents provides an efficient and general entry to α-alkyl- and α,α-dialkylamines in good yields.
用格氏试剂对肟磺酸盐进行贝克曼重排,可以高收率高效,通用地进入α-烷基-和α,α-二烷基胺。
Regioselective generation of iminium cation by PET processes: Its in situ trapping by intramolecular nucleophiles and synthesis of some biologically active heterocycles.
作者:Ganesh Pandey、G. Kumaraswamy、P.Yella Reddy
DOI:10.1016/s0040-4020(01)80497-x
日期:1992.1
Efficient, mild and direct route for regiospecific iminium cation is developed by sequential two electronoxidation of several N-alkylated tertiary amines by photoinducedelectrontransfer processes. The regiospecificity of iminium cation arises from the deprotonation step of amine radical cation to generate α-amino radical which depends on the stereoelectronic factor subject to kinetic acidity of