Application Forms azomethine ylides which readily undergo [3+2] cycloaddition to α,β-unsaturated esters affording N-benzyl substituted pyrrolidines in good yields.1 Reacted in asymmetric 1,3-dipolar cycloadditions in the practical, large-scale synthesis of chiral pyrrolidines. Packaging 1, 5, 25, 100 g in glass bottle |