Hydrazine hydrate (1:1) → tert-butyl (2S,4EZ)-2-(hydrazinocarbonyl)-4-(methoxyimino)-1-pyrrolidinecarboxylate

Participants

Reaction Steps

1-tert-butyl 2-methyl (2S,4EZ)-4-(methoxyimino)-1,2-pyrrolidinedicarboxylate (1.95 mmoles; 530 mg) was dissolved in 4 mL of MeOH and a solution of 4 mL of MeOH and 1.5 mL (d=1.03; 30.86 mmoles) of 80% hydrazine.hydrate was added (final c(NH2NH2)=13%). The reaction mixture was agitated for 2 days. Solvents were evaporated in vacuo and the residue re-dissolved in MeOH and evaporated (3×). The desired compound, tert-butyl (2S,4EZ)-2-(hydrazinocarbonyl)-4-(methoxyimino)-1-pyrrolidinecarboxylate, was isolated as a yellow oil (500 mg; 94%).

Provenance & Evidence