4-[2-(Azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [6-(2-fluoro-4-nitrophenoxy)pyrimidin-4-yl]amide → 4-[2-(Azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [6-(4-amino-2-fluorophenoxy)pyrimidin-4-yl]amide

HRID 493005Notes

Reaction equation

HRID 493005 reaction equation
[F:1][C:2]1[CH:29]=[C:28]([N+:30]([O-])=O)[CH:27]=[CH:26][C:3]=1[O:4][C:5]1[N:10]=[CH:9][N:8]=[C:7]([NH:11][C:12]([N:14]2[CH2:19][CH2:18][N:17]([CH2:20][CH2:21][N:22]3[CH2:25][CH2:24][CH2:23]3)[CH2:16][CH2:15]2)=[O:13])[CH:6]=1>O1CCCC1.CO.[C].[Pd]>[NH2:30][C:28]1[CH:27]=[CH:26][C:3]([O:4][C:5]2[N:10]=[CH:9][N:8]=[C:7]([NH:11][C:12]([N:14]3[CH2:19][CH2:18][N:17]([CH2:20][CH2:21][N:22]4[CH2:25][CH2:24][CH2:23]4)[CH2:16][CH2:15]3)=[O:13])[CH:6]=2)=[C:2]([F:1])[CH:29]=1

Participants

5

Reactant 1

HCID 576774174-[2-(Azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [6-(2-fluoro-4-nitrophenoxy)pyrimidin-4-yl]amide

Product 1

HCID 576775554-[2-(Azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [6-(4-amino-2-fluorophenoxy)pyrimidin-4-yl]amideYield 31.6%

Reagents, catalysts & solvents 3

HCID 178418390HCID 178418390, compoundCatalystHCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

4-[2-(Azetidin-1-yl)ethyl]piperazine-1-carboxylic acid [6-(2-fluoro-4-nitrophenoxy)pyrimidin-4-yl]amide (110 mg) was dissolved in tetrahydrofuran (3 ml) and methanol (3 ml), and then 10% palladium carbon (53 mg) was added, followed by stirring under a hydrogen atmosphere for 16.5 hrs. The catalyst was filtered off and washed with methanol. The filtrate and washings were concentrated under reduced pressure to give a residue, which was then purified by silica gel column chromatography (Fuji Silysia NH, heptane: ethyl acetate:ethanol=95:5 to 90:10). Fractions containing the target compound were concentrated to provide a crude product of the titled compound (32.4 mg) as a yellow oil.

Workup

  1. filtrationThe catalyst was filtered off
  2. washwashed with methanol
  3. concentrationThe filtrate and washings were concentrated under reduced pressure
  4. customto give a residue, which
  5. customwas then purified by silica gel column chromatography (Fuji Silysia NH, heptane: ethyl acetate:ethanol=95:5 to 90:10)
  6. additionFractions containing the target compound
  7. concentrationwere concentrated

Sources & evidence

ORD record
ord-a927403b7fbe47acb35392427002dbfa
Source dataset
uspto-grants-2009_05
Patent number
US07531532B2

Reaction notes

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