Taj. Vanderheide et al., ONE-POT PREPARATION OF 3-METHYLENEPYRROLIDINES WITH HIGH DIASTEREOMERIC EXCESS, Tetrahedron letters, 34(20), 1993, pp. 3309-3310
Addition of allylzinc reagents 1 to imines carrying a carbalkoxy group
at C-alpha or C-alpha', followed by Pd(0)-catalyzed cyclization permi
ts the one-pot preparation of 3-methylenepyrrolidines with high diaste
reoselectivity.