1-Hydroxybenzotriazole → 2,2-dimethoxy-2-pyridin-4-ylethyl 5-chloro-2-{1-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]-(E)-methylidene}valerate

HRID 1009355Notes

Reaction equation

HRID 1009355 reaction equation
C1C=CC2N(O)N=NC=2C=1.C(N(C(C)C)CC)(C)C.FC(F)(F)C(O)=O.[Cl:27][CH2:28][CH2:29][CH2:30]/[C:31](=[CH:35]\[C:36]1[CH:41]=[CH:40][C:39]([N:42]2[CH:46]=[C:45]([CH3:47])[N:44]=[CH:43]2)=[C:38]([O:48][CH3:49])[CH:37]=1)/[C:32]([OH:34])=[O:33].Cl.Cl.[CH3:52][O:53][C:54]([O:63][CH3:64])([C:57]1[CH:62]=[CH:61][N:60]=[CH:59][CH:58]=1)[CH2:55]N>CN(C=O)C.O.C(OCC)(=O)C.C(Cl)CCl>[Cl:27][CH2:28][CH2:29][CH2:30]/[C:31](=[CH:35]\[C:36]1[CH:41]=[CH:40][C:39]([N:42]2[CH:46]=[C:45]([CH3:47])[N:44]=[CH:43]2)=[C:38]([O:48][CH3:49])[CH:37]=1)/[C:32]([O:34][CH2:55][C:54]([O:63][CH3:64])([O:53][CH3:52])[C:57]1[CH:58]=[CH:59][N:60]=[CH:61][CH:62]=1)=[O:33]

Participants

9

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 53422771beta,beta-Dimethoxy-4-pyridineethaneamine dihydrochlorideHCID 66960186(E)-5-chloro-2-(3-methoxy-4-(4-methyl-1H-imidazol-1-yl)benzylidene)valeric acid trifluoroacetate

Product 1

HCID 670673622,2-dimethoxy-2-pyridin-4-ylethyl 5-chloro-2-{1-[3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl]-(E)-methylidene}valerateYield 73.8%

Reagents, catalysts & solvents 4

HCID 111,2-DichloroethaneSolventHCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

EDC (1.28 g), HOBT (902 mg) and IPEA (2.33 mL) were sequentially added to a solution of 5-chloro-2-{1-[3-methoxy-4-(4-methylimidazol-1-yl)phenyl]-(E)-methylidene}valeric acid trifluoroacetic acid salt (1 g) and β,β-dimethoxy-4-pyridineethaneamine dihydrochloride (740 mg) as a known compound (CAS #167897-36-1) in DMF (15 mL), and the reaction solution was stirred at room temperature for 12 hours. Ethyl acetate and water were added to the reaction solution, and the organic layer was separated. The resulting organic layer was washed with brine and then dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (carrier: Chromatorex™ NH; elution solvent: heptane:ethyl acetate=1:2) to obtain 822 mg of the title compound. The property values of the compound are as follows.

Workup

  1. customthe organic layer was separated
  2. washThe resulting organic layer was washed with brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (carrier: Chromatorex™ NH; elution solvent: heptane:ethyl acetate=1:2)

Sources & evidence

ORD record
ord-a23bcd19ac32447a8f48d4995e211d68
Source dataset
uspto-grants-2011_07
Patent number
US07973033B2

Reaction notes

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