Synthesis of Lipophilic 3,4-Disubstituted 2,5-Dihydro-2,2,5,5-tetramethyl-1H-pyrrol-1-yloxyl Radicals
作者:Tamás Kálai、Nóra M. Bárácz、Gyula Jerkovich、Olga H. Hankovszky、Kálmán Hideg
DOI:10.1055/s-1995-4097
日期:1995.10
The Grignard reaction of the esters 2a, b with octylmagnesium bromide proceeds through an allylic rearrangement to give the 3-methylene-4-octyl radical 3. Bromination of its O-acetyl derivative 5 gives allylic bromides 6 and 7 as key intermediates toward lipophilic spin labels.