Dichloromethane → (S)-dimethyl 2-((7-bromo-4-(chloromethyl)-1H-indazol-5-yl)methyl)succinate

HRID 2378651Notes

Reaction equation

HRID 2378651 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([CH2:13][C@@H:14]([CH2:19][C:20]([O:22][CH3:23])=[O:21])[C:15]([O:17][CH3:18])=[O:16])[C:5]([CH2:11]O)=[C:6]2[C:10]=1[NH:9][N:8]=[CH:7]2.[Cl:24]CCl>S(Cl)(Cl)=O>[Br:1][C:2]1[CH:3]=[C:4]([CH2:13][C@@H:14]([CH2:19][C:20]([O:22][CH3:23])=[O:21])[C:15]([O:17][CH3:18])=[O:16])[C:5]([CH2:11][Cl:24])=[C:6]2[C:10]=1[NH:9][N:8]=[CH:7]2

Participants

4

Reactant 2

HCID 6344DichloromethaneHCID 59731876(S)-dimethyl 2-((7-bromo-4-(hydroxymethyl)-1H-indazol-5-yl)methyl)succinate

Product 1

HCID 59732029(S)-dimethyl 2-((7-bromo-4-(chloromethyl)-1H-indazol-5-yl)methyl)succinateYield 99%

Reagents, catalysts & solvents 1

HCID 24386Thionyl ChlorideSolvent

Procedure

(S)-dimethyl 2-((7-bromo-4-(hydroxymethyl)-1H-indazol-5-yl)methyl)succinate (2.25 g, 5.8 mmol) was dissolved in 2M thionyl chloride in dichloromethane (42 mL, 84 mmol). Reaction stirred at room temperature for 2.0 hours. Mixture was concentrated. Residue was treated with toluene and then concentrated by roto-vap. Residue was dissolved in ethyl acetate. Mixture was washed twice with aqueous sodium bicarbonate. Organic was dried (magnesium sulfate), filtered and concentrated in vacuo. Title compound was obtained as amber solid in 99% yield. MS m/e (M+H)+=404.9, 403.0, 406.9.

Workup

  1. customReaction
  2. concentrationMixture was concentrated
  3. additionResidue was treated with toluene
  4. concentrationconcentrated by roto-vap
  5. dissolutionResidue was dissolved in ethyl acetate
  6. washMixture was washed twice with aqueous sodium bicarbonate
  7. dry with materialOrganic was dried (magnesium sulfate)
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-540111965f274a57ae6143264e8c7bd4
Source dataset
uspto-grants-2008_12
Patent number
US07470679B2

Reaction notes

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