Diisopropylethylamine → 2-[5-(1-Benzyl-1H-pyrazol-4-ylcarbamoyl)-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-pyridin-3-yl]-indole-1-carboxylic acid tert-butyl ester

HRID 1406390Notes

Reaction equation

HRID 1406390 reaction equation
[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[CH:10]=[C:9]1[C:17]1[C:18](=[O:34])[N:19]([CH2:26][O:27][CH2:28][CH2:29][Si:30]([CH3:33])([CH3:32])[CH3:31])[CH:20]=[C:21]([C:23](O)=[O:24])[CH:22]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.CN(C)CCCN=C=NCC.O.ON1C2C=CC=CC=2N=N1.C(N(CC)C(C)C)(C)C.[CH2:67]([N:74]1[CH:78]=[C:77]([NH2:79])[CH:76]=[N:75]1)[C:68]1[CH:73]=[CH:72][CH:71]=[CH:70][CH:69]=1>O1CCCC1>[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[CH:10]=[C:9]1[C:17]1[C:18](=[O:34])[N:19]([CH2:26][O:27][CH2:28][CH2:29][Si:30]([CH3:33])([CH3:32])[CH3:31])[CH:20]=[C:21]([C:23](=[O:24])[NH:79][C:77]2[CH:76]=[N:75][N:74]([CH2:67][C:68]3[CH:69]=[CH:70][CH:71]=[CH:72][CH:73]=3)[CH:78]=2)[CH:22]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 5

HCID 81531DiisopropylethylamineHCID 2066941-benzyl-1H-pyrazol-4-amineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 27960291-Hydroxybenzotriazole hydrateHCID 581173092-[5-Carboxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-pyridin-3-yl]-indole-1-carboxylic acid tert-butyl ester2×

Product 1

HCID 581173962-[5-(1-Benzyl-1H-pyrazol-4-ylcarbamoyl)-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-pyridin-3-yl]-indole-1-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
90 °C

Procedure

Intermediate (1c), 2-[5-carboxy-2-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,2-dihydro-pyridin-3-yl]-indole-1-carboxylic acid tert-butyl ester (300 mg, 0.62 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (357 mg, 1.86 mmol), 1-hydroxybenzotriazole hydrate (251 mg, 1.86 mmol), N,N-diisopropylethylamine (320 mg, 0.431 mL, 2.48 mmol), 1-benzyl-1H-pyrazol-4-ylamine (322 mg, 1.86 mmol) and tetrahydrofuran (12 mL) were combined in a 20 mL microwave vial. The contents of the vial were heated at 90° C. for 30 minutes under microwave irradiation. The reaction mixture was concentrated in vacuo. The residue was partitioned between water and dichloromethane, and the organic layer was separated. The aqueous was extracted with a further portion of dichloromethane and the combined dichloromethane layers were dried (Na2SO4) and concentrated in vacuo. The resultant crude product was purified by flash chromatography on SiO2 eluting with 20% ethyl acetate/hexane and then 2% methanol/dichloromethane to afford the desired title compound as a solid, 315 mg, 80%.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customThe residue was partitioned between water and dichloromethane
  3. customthe organic layer was separated
  4. extractionThe aqueous was extracted with a further portion of dichloromethane
  5. dry with materialthe combined dichloromethane layers were dried (Na2SO4)
  6. concentrationconcentrated in vacuo
  7. customThe resultant crude product was purified by flash chromatography on SiO2 eluting with 20% ethyl acetate/hexane

Sources & evidence

ORD record
ord-e82557e7c978418dbde18deed8808331
Source dataset
uspto-grants-2014_12
Patent number
US08916591B2

Reaction notes

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