Hydrochloric Acid → 4-(2'-Oxo-1,1',2',3-tetrahydrospiro[indene-2,3'-pyrrolo[2,3-b]pyridin]-5-ylamino)picolinic acid

HRID 1640242Notes

Reaction equation

HRID 1640242 reaction equation
Br[C:2]1[CH:7]=[CH:6][N:5]=[C:4]([C:8]([O:10]C)=[O:9])[CH:3]=1.Cl.[NH2:13][C:14]1[CH:15]=[C:16]2[C:29](=[CH:30][CH:31]=1)[CH2:28][C:18]1([C:26]3[C:21](=[N:22][CH:23]=[CH:24][CH:25]=3)[NH:20][C:19]1=[O:27])[CH2:17]2>CC(O)C>[O:27]=[C:19]1[NH:20][C:21]2=[N:22][CH:23]=[CH:24][CH:25]=[C:26]2[C:18]21[CH2:17][C:16]1[C:29](=[CH:30][CH:31]=[C:14]([NH:13][C:2]3[CH:7]=[CH:6][N:5]=[C:4]([C:8]([OH:10])=[O:9])[CH:3]=3)[CH:15]=1)[CH2:28]2

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 12828947Methyl 4-bromopicolinateHCID 591667225-amino-1,3-dihydrospiro[indene-2,3'-pyrrolo[2,3-b]pyridin]-2'(1'H)-one

Product 1

HCID 581175174-(2'-Oxo-1,1',2',3-tetrahydrospiro[indene-2,3'-pyrrolo[2,3-b]pyridin]-5-ylamino)picolinic acid

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Procedure

0.17 g (0.79 mmol) methyl 4-bromo-pyridine-2-carboxylate and 17 μL (70 μmol) of a 4M aqueous hydrochloric acid solution were added to 0.20 g (0.78 mmol) 5-amino-1,3-dihydrospiro[indene-2,3′-pyrrolo[2,3-b]pyridin]-2′(1′H)-one in 5.0 mL of 2-propanol. The reaction mixture was refluxed for 2 h, then cooled to RT and evaporated down. The residue was taken up in THF and mixed with 0.50 mL (2.0 mmol) of a 4M aqueous NaOH solution and stirred overnight at RT. The reaction mixture was diluted with water, combined with 0.5 mL conc. HCl and the solvent was eliminated. The precipitated product was suction filtered and dried.

Workup

  1. temperatureThe reaction mixture was refluxed for 2 h
  2. customevaporated down
  3. additionmixed with 0.50 mL (2.0 mmol) of a 4M aqueous NaOH solution
  4. additionThe reaction mixture was diluted with water
  5. filtrationfiltered
  6. customdried

Sources & evidence

ORD record
ord-3a962e5ce5be4740a9adb95fe821c143
Source dataset
uspto-grants-2012_02
Patent number
US08110575B2

Reaction notes

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