Triethylamine → HCID 18758355, compound

HRID 433317Notes

Reaction equation

HRID 433317 reaction equation
Cl.[NH2:2][CH:3]([C:9]1[CH:14]=[CH:13][C:12]([O:15][CH3:16])=[C:11]([O:17][CH2:18][CH3:19])[CH:10]=1)[CH2:4][CH:5]([OH:8])[CH2:6][CH3:7].[C:20]([NH:23][C:24]1[CH:34]=[CH:33][CH:32]=[C:26]2[C:27]([O:29][C:30](=O)[C:25]=12)=[O:28])(=[O:22])[CH3:21].C(N(CC)CC)C>CN(C=O)C>[CH2:18]([O:17][C:11]1[CH:10]=[C:9]([CH:3]([N:2]2[C:30](=[O:29])[C:25]3[C:26](=[CH:32][CH:33]=[CH:34][C:24]=3[NH:23][C:20](=[O:22])[CH3:21])[C:27]2=[O:28])[CH2:4][CH:5]([OH:8])[CH2:6][CH3:7])[CH:14]=[CH:13][C:12]=1[O:15][CH3:16])[CH3:19]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 2261213-Acetamidophthalic AnhydrideHCID 67429816HCID 67429816, compound

Product 1

HCID 18758355HCID 18758355, compoundYield 77.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
85 °C

Procedure

A stirred mixture of 5-amino-5-(3-ethoxy-4-methoxyphenyl)pentan-3-ol hydrochloride(1.15 g, 3.97 mmol), 3-acetamidophthalic anhydride (0.82 g, 3.97 mmol) and triethylamine (0.4 g, 3.97 mmol) in DMF (20 mL) was heated at 80-90° C. for 6 hours. The mixture was then concentrated in vacuo. The residue was dissolved in ethyl acetate (80 mL), washed with water (30 mL), brine (30 mL) and dried over magnesium sulfate. The solvent was removed in vacuo and the residue was purified by chromatography (Silica gel, methylene chloride:ethyl acetate 8:2) to give N-{2-[1-(3-ethoxy-4-methoxyphenyl)-3-hydroxypentyl]-1,3-dioxoisoindolin-4-yl}acetamide (1.35 g, 77%) ; 1H NMR (CDCl3) δ9.52 (s, 1H), 8.71 (d, J=8.4 Hz, 1H), 7.63 (t, J=7.6 Hz, 1H), 7.48 (d, J=7.3 Hz, 1H), 7.09-7.07 (m, 2H), 6.83-6.80 (m, 1H), 5.61-5.55 (J=3.9, 11.9 Hz, 1H), 4.11 (q, J=6.9 Hz, 2H), 3.84 (s, 3H), 3.47 (m, 1H), 2.97-2.86 (m, 1H), 2.25 (s, 3H), 2.06-1.95 (m, 1H), 1.78 (b, 1H), 1.62-1.52 (m, 2H), 1.45 (t, J=7.0 Hz, 3H), 0.95 (t, J=7.3 Hz, 3H); 13C NMR (CDCl3) δ170.39, 169.23, 168.11, 148.94, 148.14, 137.32, 135.83, 131.81, 131.19, 124.72, 120.30, 117.94, 115.31, 112.87, 111.09, 70.01, 64.36, 55.86, 51.29, 37.92, 30.46, 24.92, 14.73, 9.90.

Workup

  1. concentrationThe mixture was then concentrated in vacuo
  2. dissolutionThe residue was dissolved in ethyl acetate (80 mL)
  3. washwashed with water (30 mL), brine (30 mL)
  4. dry with materialdried over magnesium sulfate
  5. customThe solvent was removed in vacuo
  6. customthe residue was purified by chromatography (Silica gel, methylene chloride:ethyl acetate 8:2)

Sources & evidence

ORD record
ord-a1d84a6fa9484a3dac15f795329f50a2
Source dataset
uspto-grants-2003_12
Patent number
US06667316B1

Reaction notes

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