Nm. Baracz et al., SYNTHESIS OF ALKYNYL-SUBSTITUTED PYRROLIDIN-1-YLOXYL RADICALS FROM 1-PYRROLINE N-OXIDE NITRONES AND ALKYNYLMAGNESIUM BROMIDES, Synthesis, (2), 1996, pp. 204-208
The reaction of 1-pyrroline N-oxides with propargyl- and alkynyl-magne
sium bromides proceed to give alkynyl functionalized pyrrolidin-1-oxyl
s without the formation of isoxazolines by a dipolar cycloaddition rea
ction.