Methyl Isocyanate → Benzyl 4-{1-[(methylamino)carbonyl]pyrrolidin-3-yl}piperazine-1-carboxylate

Participants

Reaction Steps

45-3 (0.27 g, 0.93 mmol) was dissolved in methylene chloride (4 mL) and DIEA (0.60 g, 4.67 mmol) and then a methylene chloride solution (1 mL) of methylisocyanate (0.050 g, 0.93 mmol) was added. The solution was then stirred for 30 minutes, after which it was concentrated and purified on a C18 preparative hplc column to afford 45-4. 1H-NMR (CD3OD): 7.37(m, 5H); 5.17(s, 2H); 3.89(m, 4H); 3.59(m, 4H); 3.36(m, 5H); 2.74(s, 3H); 2.47(m, 1H); 2.24(m, 1H).

Provenance & Evidence