Triethylamine → 3-(5-Chloro-pyridin-2-yl)-5-isobutyrylamino-benzoic acid methyl ester

HRID 736909Notes

Reaction equation

HRID 736909 reaction equation
[CH3:1][O:2][C:3](=[O:18])[C:4]1[CH:9]=[C:8]([C:10]2[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][N:11]=2)[CH:7]=[C:6]([NH2:17])[CH:5]=1.CCN(CC)CC.[C:26](Cl)(=[O:30])[CH:27]([CH3:29])[CH3:28]>C(Cl)Cl>[CH3:1][O:2][C:3](=[O:18])[C:4]1[CH:5]=[C:6]([NH:17][C:26](=[O:30])[CH:27]([CH3:29])[CH3:28])[CH:7]=[C:8]([C:10]2[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][N:11]=2)[CH:9]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 62325Isobutyryl chlorideHCID 578515533-Amino-5-(5-chloro-pyridin-2-yl)-benzoic acid methyl ester

Product 1

HCID 578514303-(5-Chloro-pyridin-2-yl)-5-isobutyrylamino-benzoic acid methyl esterYield 67.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

3-Amino-5-(5-chloro-pyridin-2-yl)-benzoic acid methyl ester (1.5 g, 5.71 mmol, from Preparation 2) and Et3N (2.39 mL, 17.13 mmol) were dissolved in 30 mL methylene chloride, and isobutyryl chloride (72 mL, 6.85 mmol) was added. The reaction mixture was stirred at room temperature for two hours, and then was partitioned between water and methylene chloride. The combined organic layers were dried (MgSO4), filtered and concentrated under reduced pressure to give 1.29 g of 3-(5-chloro-pyridin-2-yl)-5-isobutyrylamino-benzoic acid methyl ester, MS (M+H)=333.

Workup

  1. customwas partitioned between water and methylene chloride
  2. dry with materialThe combined organic layers were dried (MgSO4)
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-0328a9ed6c2d47d39568d984e3cab2a2
Source dataset
uspto-grants-2009_09
Patent number
US07595405B2

Reaction notes

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