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

HRID 1532043Notes

Reaction equation

HRID 1532043 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-acetyl4-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-59d16ba437e949b5b0e3769863f4f793
Source dataset
uspto-grants-2001_03
Patent number
US06201003B1

Reaction notes

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