Starting from readily available five-membered cyclic nitrones, paramagnetic analogues
of palmitic and hexadec-2E-enoic acids are described with a range of pyrrolidine ring orientations. Herein we
report the synthesis of 3,4-disubstituted lipophilic pyrroline nitroxides through
a palladium-catalyzed cross-coupling reaction. Lipophilic phosphonium salt and SH-specific
labels (methanethiosulfonates and isoselenuronium salts) with allylic and propargylic
terminal groups are also described.
fatty acids - free radicals - Grignard reaction - lipids - palladium-catalyzed reactions