1-Hydroxybenzotriazole → N-tert-butyloxycarbonyl-4-(4-amino-5-chloro-2-methoxyphenylcarbonylaminomethyl)piperidine

HRID 344234Notes

Reaction equation

HRID 344234 reaction equation
[NH2:1][CH2:2][CH:3]1[CH2:8][CH2:7][N:6]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:5][CH2:4]1.[NH2:16][C:17]1[C:25]([Cl:26])=[CH:24][C:20]([C:21](O)=[O:22])=[C:19]([O:27][CH3:28])[CH:18]=1.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C>CN(C)C=O>[NH2:16][C:17]1[C:25]([Cl:26])=[CH:24][C:20]([C:21]([NH:1][CH2:2][CH:3]2[CH2:8][CH2:7][N:6]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:5][CH2:4]2)=[O:22])=[C:19]([O:27][CH3:28])[CH:18]=1

Participants

6

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 816264-Amino-5-chloro-2-methoxybenzoic acidHCID 7368171-Boc-4-(aminomethyl)piperidineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride

Product 1

HCID 11200348N-tert-butyloxycarbonyl-4-(4-amino-5-chloro-2-methoxyphenylcarbonylaminomethyl)piperidineYield 102.4%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

4-Aminomethyl-1-tert-butoxycarbonylpiperidine (10.0 g) was dissolved in dimethylformamide and 4-amino-5-chloro-2-methoxybenzoic acid (9.4 g) and 1-hydroxybenzotriazole (6.6 g) were added. After stirring at 0° C. for 40 min, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride (9.4 g) was added, and the mixture was stirred at room temperature for 24 hr. The reaction mixture was concentrated under reduced pressure. Aqueous potassium carbonate solution was added to the residue and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and concentrated under reduced pressure. The obtained residue was purified by silica gel chromatography to give 19.0 g of 4-amino-5-chloro-N-(1-tert-butoxycarbonylpiperidin-4-ylmethyl)-2-methoxybenzamide.

Workup

  1. stirringthe mixture was stirred at room temperature for 24 hr
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. additionAqueous potassium carbonate solution was added to the residue
  4. extractionthe mixture was extracted with ethyl acetate
  5. dry with materialThe extract was dried over magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe obtained residue was purified by silica gel chromatography

Sources & evidence

ORD record
ord-4d5cf63f151740218c19feb15d6535b2
Source dataset
uspto-grants-1999_01
Patent number
US05864039

Reaction notes

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