2-(4-Fluorophenyl)acetyl isocyanate → 4-[2-(Azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [4-(4-{3-[2-(4-fluorophenyl)acetyl]ureido}phenoxy)pyridin-2-yl]amide

HRID 492994Notes

Reaction equation

HRID 492994 reaction equation
[NH2:1][C:2]1[CH:29]=[CH:28][C:5]([O:6][C:7]2[CH:12]=[CH:11][N:10]=[C:9]([NH:13][C:14]([N:16]3[CH2:21][CH2:20][N:19]([CH2:22][CH2:23][N:24]4[CH2:27][CH2:26][CH2:25]4)[CH2:18][CH2:17]3)=[O:15])[CH:8]=2)=[CH:4][CH:3]=1.[F:30][C:31]1[CH:36]=[CH:35][C:34]([CH2:37][C:38]([N:40]=[C:41]=[O:42])=[O:39])=[CH:33][CH:32]=1>CN(C)C=O.C(OCC)(=O)C.C(OCC)C.CCCCCC>[F:30][C:31]1[CH:32]=[CH:33][C:34]([CH2:37][C:38]([NH:40][C:41](=[O:42])[NH:1][C:2]2[CH:3]=[CH:4][C:5]([O:6][C:7]3[CH:12]=[CH:11][N:10]=[C:9]([NH:13][C:14]([N:16]4[CH2:21][CH2:20][N:19]([CH2:22][CH2:23][N:24]5[CH2:27][CH2:26][CH2:25]5)[CH2:18][CH2:17]4)=[O:15])[CH:8]=3)=[CH:28][CH:29]=2)=[O:39])=[CH:35][CH:36]=1

Participants

7

Reactant 2

HCID 231530882-(4-Fluorophenyl)acetyl isocyanateHCID 576775264-[2-(Azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [4-(4-aminophenoxy)pyridin-2-yl]amide

Product 1

HCID 576775494-[2-(Azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [4-(4-{3-[2-(4-fluorophenyl)acetyl]ureido}phenoxy)pyridin-2-yl]amideYield 19.6%

Reagents, catalysts & solvents 4

HCID 3283Diethyl EtherSolventHCID 6228DimethylformamideSolventHCID 8058HexaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 4-[2-(azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [4-(4-aminophenoxy)pyridin-2-yl]amide (32.4 mg) in N,N-dimethylformamide (1 ml) was added a solution of 0.25 M 2-(4-fluorophenyl)acetyl isocyanate in ethyl acetate (0.98 ml) under a nitrogen atmosphere, followed by stirring for 1 hr. The reaction mixture was partitioned between ethyl acetate (100 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 (50 ml) 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, eluent; ethyl acetate, then ethyl acetate:methanol=9:1). Fractions containing the target compound were concentrated to give a residue, which was then suspended in diethyl ether (1.5 ml) and hexane (1.5 ml). The solid was filtered off and dried under aeration to provide the titled compound (9.2 mg, 19.6%) as white powder.

Workup

  1. customThe reaction mixture was partitioned between ethyl acetate (100 ml)
  2. washThe organic layer was washed with a saturated aqueous solution of sodium hydrogencarbonate (50 ml), water (50 ml), brine (50 ml)
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was evaporated
  5. customto give a residue, which
  6. customwas then purified by silica gel column chromatography (Fuji Silysia NH, eluent
  7. additionFractions containing the target compound
  8. concentrationwere concentrated
  9. customto give a residue, which
  10. filtrationThe solid was filtered off
  11. customdried under aeration

Sources & evidence

ORD record
ord-8bc8c7c095dd439992f0eae1d35030b7
Source dataset
uspto-grants-2009_05
Patent number
US07531532B2

Reaction notes

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