Ethyl Acetate → 4-Amino-1-Boc-piperidine

HRID 2301750Notes

Reaction equation

HRID 2301750 reaction equation
[N:1]([CH:4]1[CH2:9][CH2:8][N:7]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:6][CH2:5]1)=[N+]=[N-].C(OCC)(=O)C>CO.[Pd]>[NH2:1][CH:4]1[CH2:5][CH2:6][N:7]([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH2:8][CH2:9]1

Participants

5

Reactant 2

HCID 8857Ethyl AcetateHCID 114587941,1-Dimethylethyl 4-azido-1-piperidinecarboxylate

Product 1

HCID 12682914-Amino-1-Boc-piperidineYield 97.6%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

A solution of 4.05 g (17.9 mmol) of 4-azido-1-t-butoxycarbonylpiperidine from Step A in 50 mL of methanol was hydrogenated with 350 mg of 10% Pd/C under a hydrogen balloon for 16 h when the reaction was complete by TLC (10% ethyl acetate in hexanes). The catalyst was filtered off and the volatiles removed in vacuo to give 3.5 g of title compound which was used directly in subsequent reactions.

Workup

  1. customfor 16 h
  2. filtrationThe catalyst was filtered off
  3. customthe volatiles removed in vacuo

Sources & evidence

ORD record
ord-0c484792fb6a49ea989b86addc8a0df5
Source dataset
uspto-grants-2002_12
Patent number
US06500844B1

Reaction notes

Loading…