Scheme 1. Synthesis of racemic pyrrolidines.
Reagents and conditions: (a) Ph3P=CHCO2Me; (b) TFA, Me3SiCH2N(Bn)CH2OMe; (c) NH4CO2H, Pd/C; (d) Et3N, Boc2O; (e) LiOH; (f) ArCH2NH2, HATU; (g) HCl.
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