Oxalyl chloride → HCID 21992727, compound

HRID 8257Notes

Reaction equation

HRID 8257 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[C:7]1[C:8]([C:15]2[C:24]3[C:19](=[CH:20][C:21]([O:25][CH2:26][C:27]([OH:29])=O)=[CH:22][CH:23]=3)[N:18]=[CH:17][CH:16]=2)=[C:9]2[CH2:14][CH2:13][CH2:12][N:10]2[N:11]=1.C(Cl)(=O)C([Cl:33])=O>ClCCl.CN(C)C=O>[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[C:7]1[C:8]([C:15]2[C:24]3[C:19](=[CH:20][C:21]([O:25][CH2:26][C:27]([Cl:33])=[O:29])=[CH:22][CH:23]=3)[N:18]=[CH:17][CH:16]=2)=[C:9]2[CH2:14][CH2:13][CH2:12][N:10]2[N:11]=1

Participants

5

Reactant 2

HCID 65578Oxalyl chlorideHCID 21992686[4-(2-Pyridin-2-yl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)-quinolin-7-yloxy]-acetic acid

Product 1

HCID 21992727HCID 21992727, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideCatalystHCID 6344DichloromethaneSolvent

Procedure

To a solution of [4-(2-pyridin-2-yl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)-quinolin-7-yloxy]-acetic acid (150 mg, 0.39 mmol) in dichloromethane (3 mL) is added oxalyl chloride (490 mg, 3.9 mmol) and 1 drop of N,N-dimethylformamide. The mixture is stirred at room temperature for 5 h, concentrated in vacuo, and residual solvents removed by co-evaporation three times with chloroform to yield [4-(2-pyridin-2-yl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)-quinolin-7-yloxy]-acetyl chloride as a yellow solid. To a solution of [4-(2-pyridin-2-yl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)-quinolin-7-yloxy]-acetyl chloride (50 mg, 0.12 mmol) in dichloromethane at room temperature is added 1-methyl-piperazine (62 mg, 62 mmol) and the mixture stirred for 2.5 h. The mixture is partitioned between dichloromethane and water, the organic portion dried (sodium sulfate), filtered, and concentrated in vacuo. The crude residue is chromatographed on SiO2 (89% dichloromethane 10% methanol 1% concentrated ammonium hydroxide) to yield the title compound, 28 mg (48%), as a light brown solid.

Workup

  1. concentrationconcentrated in vacuo, and residual solvents
  2. customremoved by co-evaporation three times with chloroform

Sources & evidence

ORD record
ord-3de5308c4fcb4270b00c547ea313c58d
Source dataset
uspto-grants-2006_08
Patent number
US07087626B2

Reaction notes

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