LDA-promoted decomposition of benzenesulfenamides. A route to aminyl radicals by dioxygen oxidation of lithium amides
作者:Anna Barbieri、Pier Carlo Montevecchi、Daniele Nanni、Maria Luisa Navacchia
DOI:10.1016/0040-4020(96)00799-5
日期:1996.10
The LDA-promoted decomposition of N-monosubstituted sulfenamides 1a-d occurs through the formation of thioaminyl anions, which undergo oxidation either at sulfur, with formation of sulfonamides, or at nitrogen, with formation of thioaminyl radicals, depending on the nature of the 4′-substituent. The reaction of N,N-disubstituted sulfenamides 1e-h proceeds through the intermediacy of a lithium complex
LDA促进的N-单取代亚磺酰胺1a-d的分解通过形成硫胺基阴离子而发生,取决于4的性质,硫胺基阴离子在硫的情况下会氧化,形成磺酰胺,或在氮时发生氧化,形成硫胺基。 '-取代基。N,N-二取代亚磺酰胺的反应1E-H前进通过能够产生aminyl自由基的复合锂的中间性经由亚磺酰基团转移到二异丙-propylamido阴离子和所得锂的酰胺的后续空气氧化3E-H 。