Synthesis of 2-Substituted Nitrogen Heterocycles Using <i>para</i>-Toluenesulfonyl Iodide in a Key Step
作者:D. Craig、G. Edwards、C. Muldoon
DOI:10.1055/s-1997-1057
日期:——
N-Protected aminoalkenes undergo radical addition of tosyl iodide to give β-iodosulfones which can subsequently be induced to cyclise giving 2-substituted pyrrolidines and piperidines. Incorporation of an α-methylbenzyl group at nitrogen leads to a diastereoselective ring closure where the constituent diastereoisomers can be separated readily giving chiral, non-racemic heterocycles.