Diisopropylethylamine → HCID 86616129, compound

HRID 545271Notes

Reaction equation

HRID 545271 reaction equation
C(N(CC)C(C)C)(C)C.Cl[C:11]1[C:16]([C:17]([O:19][CH2:20][CH3:21])=[O:18])=[CH:15][N:14]=[C:13]([Cl:22])[CH:12]=1.[CH2:23]([N:26]([C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[NH2:27])[CH:24]=[CH2:25]>O.O1CCCC1.C1(C)C=CC=CC=1>[CH2:23]([N:26]([C:28]([O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:29])[NH:27][C:11]1[C:16]([C:17]([O:19][CH2:20][CH3:21])=[O:18])=[CH:15][N:14]=[C:13]([Cl:22])[CH:12]=1)[CH:24]=[CH2:25]

Participants

7

Reactant 3

HCID 81531DiisopropylethylamineHCID 600045Ethyl 4,6-dichloropyridine-3-carboxylateHCID 10535205tert-Butyl 1-allylhydrazinecarboxylate

Product 1

HCID 86616129HCID 86616129, compoundYield 18.2%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 1140TolueneSolventHCID 8028TetrahydrofuranSolvent2×

Conditions

Temperature
70 °C

Procedure

7.0 mL of N,N-diisopropylethylamine was added to tetrahydrofuran (70 mL) solution of 4.40 g of ethyl 4,6-dichloronicotinate and 3.44 g of tert-butyl 1-allylhydrazinecarboxylate obtained in Production Example 1-1, and stirred overnight at 70° C. 30 mL of toluene was added to the reaction liquid, and tetrahydrofuran was evaporated away. This was stirred at 120° C. for 6 hours, and then heated overnight under reflux. The reaction liquid was restored to room temperature, water was added thereto, and extracted with ethyl acetate. This was washed with saturated saline water, dried with anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified through silica gel column chromatography (hexane/ethyl acetate=16/1 to 12/1) to obtain 1.29 g of the entitled compound as a colorless oily substance.

Workup

  1. customobtained in Production Example 1-1
  2. customwas evaporated away
  3. stirringThis was stirred at 120° C. for 6 hours
  4. temperatureheated overnight
  5. temperatureunder reflux
  6. customThe reaction liquid
  7. customwas restored to room temperature
  8. extractionextracted with ethyl acetate
  9. washThis was washed with saturated saline water
  10. dry with materialdried with anhydrous magnesium sulfate
  11. concentrationconcentrated under reduced pressure
  12. customThe residue was purified through silica gel column chromatography (hexane/ethyl acetate=16/1 to 12/1)

Sources & evidence

ORD record
ord-7fd2c4b758744beb87a1e6f30c617123
Source dataset
uspto-grants-2011_05
Patent number
US07935708B2

Reaction notes

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