1-Hydroxybenzotriazole → Tert-butyl 2-[(4-{2-[2-(acetylamino)-1,3-thiazol-4-yl]ethyl}phenyl)amino]-2-oxoethylcarbamate

HRID 1246446Notes

Reaction equation

HRID 1246446 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][C:10]2[N:11]=[C:12]([NH:15][C:16](=[O:18])[CH3:17])[S:13][CH:14]=2)=[CH:4][CH:3]=1.[C:19]([O:23][C:24]([NH:26][CH2:27][C:28](O)=[O:29])=[O:25])([CH3:22])([CH3:21])[CH3:20].Cl.C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1>ClCCl>[C:16]([NH:15][C:12]1[S:13][CH:14]=[C:10]([CH2:9][CH2:8][C:5]2[CH:6]=[CH:7][C:2]([NH:1][C:28](=[O:29])[CH2:27][NH:26][C:24](=[O:25])[O:23][C:19]([CH3:20])([CH3:21])[CH3:22])=[CH:3][CH:4]=2)[N:11]=1)(=[O:18])[CH3:17]

Participants

6

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 78288N-(tert-butoxycarbonyl)glycineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 21914814N-{4-[2-(4-aminophenyl)ethyl]thiazol-2-yl}acetamide

Product 1

HCID 86595590Tert-butyl 2-[(4-{2-[2-(acetylamino)-1,3-thiazol-4-yl]ethyl}phenyl)amino]-2-oxoethylcarbamateYield 362.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of N-(4-(2-(4-aminophenyl)ethyl)-1,3-thiazol-2-yl)acetamide (100 mg) prepared in a similar manner according to Step 6 of Production Example 1, ((tert-butoxycarbonyl)amino)acetic acid (74 mg), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (81 mg), 1-hydroxybenzotriazole (57 mg) and dichloromethane (5 ml) was stirred at ambient temperature for 3 hours. The reaction mixture was washed with saturated aqueous sodium hydrogen bicarbonate, and the organic layer was concentrated in vacuo. The residue was purified by flash column chromatography on silica-gel with 3% methanol/chloroform as an eluent. The crystalline residue was collected and washed with ethyl acetate to give tert-butyl 2-[(4-{2-[2-(acetylamino)-1,3-thiazol-4-yl]ethyl}phenyl)amino]-2-oxoethylcarbamate (580 mg).

Workup

  1. customprepared in a similar manner
  2. washThe reaction mixture was washed with saturated aqueous sodium hydrogen bicarbonate
  3. concentrationthe organic layer was concentrated in vacuo
  4. customThe residue was purified by flash column chromatography on silica-gel with 3% methanol/chloroform as an eluent
  5. customThe crystalline residue was collected
  6. washwashed with ethyl acetate

Sources & evidence

ORD record
ord-fb4737acb5b4422eb7b39fcd123dcefb
Source dataset
uspto-grants-2006_10
Patent number
US07125901B2

Reaction notes

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