Phenyl chloroformate → 4-(Pyrrolidin-1-ylmethyl)piperidine-1-carboxylic acid [6-(2-fluoro-4-nitrophenoxy)pyrimidin-4-yl]amide

HRID 492931Notes

Reaction equation

HRID 492931 reaction equation
[F:1][C:2]1[CH:15]=[C:14]([N+:16]([O-:18])=[O:17])[CH:13]=[CH:12][C:3]=1[O:4][C:5]1[N:10]=[CH:9][N:8]=[C:7]([NH2:11])[CH:6]=1.Cl[C:20](OC1C=CC=CC=1)=[O:21].Cl.Cl.[N:31]1([CH2:36][CH:37]2[CH2:42][CH2:41][NH:40][CH2:39][CH2:38]2)[CH2:35][CH2:34][CH2:33][CH2:32]1>O1CCCC1.C(N(CC)CC)C.CN(C)C=O>[F:1][C:2]1[CH:15]=[C:14]([N+:16]([O-:18])=[O:17])[CH:13]=[CH:12][C:3]=1[O:4][C:5]1[N:10]=[CH:9][N:8]=[C:7]([NH:11][C:20]([N:40]2[CH2:41][CH2:42][CH:37]([CH2:36][N:31]3[CH2:35][CH2:34][CH2:33][CH2:32]3)[CH2:38][CH2:39]2)=[O:21])[CH:6]=1

Participants

7

Reactant 3

HCID 15891Phenyl chloroformateHCID 231530124-Amino-6-(2-fluoro-4-nitrophenoxy)pyrimidineHCID 231530214-(1-Pyrrolidinylmethyl)piperidine dihydrochloride

Product 1

HCID 866021714-(Pyrrolidin-1-ylmethyl)piperidine-1-carboxylic acid [6-(2-fluoro-4-nitrophenoxy)pyrimidin-4-yl]amide

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolventHCID 8028TetrahydrofuranSolventHCID 8471TriethylamineSolvent2×

Procedure

6-(2-Fluoro-4-nitrophenoxy)pyrimidin-4-ylamine (200 mg) was dissolved in tetrahydrofuran (8 ml) under a nitrogen atmosphere, and then triethylamine (0.334 ml) and phenyl chloroformate (0.301 ml) were added thereto while cooling in an ice water bath, followed by warming to room temperature and stirring for 1.5 hrs. The reaction mixture was partitioned between ethyl acetate (200 ml) and a saturated aqueous solution of sodium hydrogencarbonate (50 ml). The organic layer was washed with a saturated aqueous solution of sodium hydrogencarbonate (50 ml), water (50 ml), brine (100 ml) in this order, and dried over anhydrous sodium sulfate. The solvent was evaporated to give a residue, to which was added N,N-dimethylformamide (8 ml). 4-(Pyrrolidin-1-ylmethyl)piperidine dihydrochloride (771 mg) and triethylamine (0.896 ml) were added thereto, followed by stirring for 4 hrs. The reaction mixture was partitioned between ethyl acetate (100 ml) and a saturated aqueous solution of ammonium chloride (50 ml). The organic layer was washed with a saturated aqueous solution of ammonium chloride (50 ml), water (50 ml), and brine (50 ml) in this order, and dried over anhydrous sodium sulfate. The solvent was evaporated to give a residue, which was then purified by silica gel column chromatography (Fuji Silysia NH, heptane:ethyl acetate=1:1, then ethyl acetate). Fractions containing the target compound were concentrated to provide 4-(pyrrolidin-1-ylmethyl)piperidine-1-carboxylic acid [6-(2-fluoro-4-nitrophenoxy)pyrimidin-4-yl]amide (350 mg) as a pale yellow oil.

Workup

  1. temperaturewhile cooling in an ice water bath
  2. customThe reaction mixture was partitioned between ethyl acetate (200 ml)
  3. washThe organic layer was washed with a saturated aqueous solution of sodium hydrogencarbonate (50 ml), water (50 ml), brine (100 ml) in this order
  4. dry with materialdried over anhydrous sodium sulfate
  5. customThe solvent was evaporated
  6. customto give a residue
  7. stirringby stirring for 4 hrs
  8. customThe reaction mixture was partitioned between ethyl acetate (100 ml)
  9. washThe organic layer was washed with a saturated aqueous solution of ammonium chloride (50 ml), water (50 ml), and brine (50 ml) in this order
  10. dry with materialdried over anhydrous sodium sulfate
  11. customThe solvent was evaporated
  12. customto give a residue, which
  13. customwas then purified by silica gel column chromatography (Fuji Silysia NH, heptane
  14. additionFractions containing the target compound
  15. concentrationwere concentrated

Sources & evidence

ORD record
ord-f91551da8cf3436d8a64d7119e9d6621
Source dataset
uspto-grants-2009_05
Patent number
US07531532B2

Reaction notes

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