Die BECKMANN-Umlagerung und Fragmentierung von optisch aktiven ?-trisubstituierten Ketoximtosylaten
作者:H. P. Fischer
DOI:10.1002/hlca.19650480609
日期:——
retained configuration of the migrating group is accompanied by fragmentation to predominantly inverted 2-phenyl-2-methoxy-butane. N-Alkyl-nitrilium salts are common intermediates for rearrangement and fragmentation. Since the heterolysis of N-alkyl nitrilium ions is energetically related to SN1 reactions of alkyl halogenides or alkyl esters, the stereochemical course has been interpreted in terms of