p-Toluenesulfonic acid → 5-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-3-(2-methylthiazolidine-2-yl)-4-methylsulfinyl-1H-pyrazole

HRID 1937449Notes

Reaction equation

HRID 1937449 reaction equation
[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([C:19](=O)[CH3:20])[C:3]=1[S:22]([CH3:24])=[O:23].Cl.[NH2:26][CH2:27][CH2:28][SH:29].C(N(CC)CC)C.C1(C)C=CC(S(O)(=O)=O)=CC=1>O.C1C=CC=CC=1>[NH2:1][C:2]1[N:6]([C:7]2[C:12]([Cl:13])=[CH:11][C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][C:8]=2[Cl:18])[N:5]=[C:4]([C:19]2([CH3:20])[NH:26][CH2:27][CH2:28][S:29]2)[C:3]=1[S:22]([CH3:24])=[O:23]

Participants

7

Reactant 4

HCID 6101p-Toluenesulfonic acidHCID 8471TriethylamineHCID 9082Cysteamine HydrochlorideHCID 11069398Acetoprole

Product 1

HCID 224611975-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-3-(2-methylthiazolidine-2-yl)-4-methylsulfinyl-1H-pyrazoleYield 1.7%

Reagents, catalysts & solvents 2

HCID 241BenzeneSolventHCID 962WaterSolvent

Procedure

A mixture of 1 g (2.5 mmol) of 5-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-3-acetyl-4-methylsulfinyl-1H-pyrazole, 0.284 g (2.5 mmol) of 2-aminoethanethiol hydrochloride, 348 microliters (2.50 mmol) of triethylamine, 50 mg of p-toluenesulfonic acid and 30 ml of benzene was heated to reflux with removal of water overnight. The mixture was successively cooled, filtered, evaporated, chromatographed so as to give 20 mg of the title compound as white solid; melting point 85° C.

Workup

  1. temperaturewas heated
  2. temperatureThe mixture was successively cooled
  3. filtrationfiltered
  4. customevaporated
  5. customchromatographed so as

Sources & evidence

ORD record
ord-c33b8d15e45d4f3180fe6bdc147b7265
Source dataset
uspto-grants-2002_05
Patent number
US06395760B1

Reaction notes

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