Sodium Thiosulfate → 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea

HRID 919505Notes

Reaction equation

HRID 919505 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]([NH:11][C:12]2[CH:17]=[CH:16][C:15]([OH:18])=[C:14]([C:19]3[N:20]([CH3:24])[N:21]=[CH:22][CH:23]=3)[CH:13]=2)=[O:10])=[CH:4][CH:3]=1.[Cl:25]N1C(=O)CCC1=O.[O-]S([O-])(=S)=O.[Na+].[Na+].C([O-])(O)=O.[Na+]>CN(C=O)C.O>[Cl:25][C:23]1[CH:22]=[N:21][N:20]([CH3:24])[C:19]=1[C:14]1[CH:13]=[C:12]([NH:11][C:9]([NH:8][C:5]2[CH:4]=[CH:3][C:2]([Cl:1])=[CH:7][CH:6]=2)=[O:10])[CH:17]=[CH:16][C:15]=1[OH:18]

Participants

7

Reactant 4

HCID 24477Sodium ThiosulfateHCID 31398ChlorosuccinimideHCID 516892Sodium BicarbonateHCID 1356979361-(4-Chloro-phenyl)-3-[4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)-phenyl]-urea

Product 1

HCID 1356979401-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-ureaYield 58.9%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a stirred and cooled solution of Compound 119 (0.22 g, 0.63 mmol), in DMF (2.0 mL) was added N-chlorosuccinimide (0.168, 1.26 mmol). The reaction was stirred until the LCMS showed no starting material (2.5 hrs). The reaction mixture was poured into ice cooled water containing Na2S2O3 and NaHCO3 and the resulting solid was filtered, washed with ice-cooled water and dried in vacuo to afford a off-white solid 1-[3-(4-Chloro-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea (0.14 g, 58%). LCMS m/z (%)=377 (M+H, 35Cl, 35Cl, 100), 379 (M+H, 35Cl, 37Cl, 59.4), 381 (M+H, 37Cl, 37Cl, 10.0). 1H NMR (400 MHz, DMSO-d6) δ: 9.76 (bs, 1H), 8.73 (bs, 1H), 8.56 (bs, 1H), 7.58 (s, 1H), 7.44-7.46 (dd, J=8.6, 2.03 Hz, 2H), 7.34-7.37 (dd, J=8.79, 2.7 Hz, 1H), 7.29 (dd, J=8.85, 2.07 Hz, 3H), 6.92-6.94 (d, J=6.78 Hz, 1H), 3.64 (s, 3H).

Workup

  1. stirringThe reaction was stirred until the LCMS
  2. customno starting material (2.5 hrs)
  3. additionThe reaction mixture was poured into ice
  4. filtrationthe resulting solid was filtered
  5. washwashed with ice-
  6. temperaturecooled water
  7. customdried in vacuo

Sources & evidence

ORD record
ord-a4ffff3673df4f049405eed4514f1eac
Source dataset
uspto-grants-2016_03
Patent number
US09273035B2

Reaction notes

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