Diisopropylethylamine → HCID 68781024, compound

HRID 2264506Notes

Reaction equation

HRID 2264506 reaction equation
[Br:1][C:2]1[CH:3]=[N:4][C:5](Cl)=[N:6][CH:7]=1.[C:9]([O:13][C:14]([N:16]1[CH2:21][CH2:20][CH:19]([NH2:22])[CH2:18][CH2:17]1)=[O:15])([CH3:12])([CH3:11])[CH3:10].C(N(C(C)C)C(C)C)C>C(#N)C>[C:9]([O:13][C:14]([N:16]1[CH2:21][CH2:20][CH:19]([NH:22][C:5]2[N:4]=[CH:3][C:2]([Br:1])=[CH:7][N:6]=2)[CH2:18][CH2:17]1)=[O:15])([CH3:12])([CH3:10])[CH3:11]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 6066655-Bromo-2-chloropyrimidineHCID 12682914-Amino-1-Boc-piperidine

Product 1

HCID 68781024HCID 68781024, compoundYield 78%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a stirred solution of 5-bromo-2-chloropyrimidine (10.0 g, 51.7 mmol, 1.0 equiv) and 4-amino-piperidine-1-carboxylic acid tert-butyl ester (10.6 g, 51.7 mmol, 1.0 equiv) in acetonitrile (250 mL) was added at rt drop by drop N-ethyl diisopropylamine (45.2 mL 34.4 g, 266 mmol, 5.1 equiv). Then, the reaction mixture was heated to reflux for 16 h, poured into crashed ice and extracted twice with ethyl acetate. The combined organic layers were washed with brine and water, dried over MgSO4, filtered and concentrated by evaporation under reduced pressure. The crude product was purified by column chromatography on silica eluting with a gradient of dichloromethane/methanol to give 14.4 g (78%) of the title compound as a colorless solid. MS (ISP): 357.0 [M+H]+.

Workup

  1. temperatureThen, the reaction mixture was heated
  2. temperatureto reflux for 16 h
  3. additionpoured
  4. extractionextracted twice with ethyl acetate
  5. washThe combined organic layers were washed with brine and water
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated by evaporation under reduced pressure
  9. customThe crude product was purified by column chromatography on silica eluting with a gradient of dichloromethane/methanol

Sources & evidence

ORD record
ord-4d56a47ea30148f98e9cab8b30247c7d
Source dataset
uspto-grants-2010_12
Patent number
US07855194B2

Reaction notes

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