Hydrochloric Acid → 3-Cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-5-hydroxymethyl-4-trifluoromethylthiopyrazole

HRID 568202Notes

Reaction equation

HRID 568202 reaction equation
[C:1]([C:3]1[C:7]([S:8][C:9]([F:12])([F:11])[F:10])=[C:6]([CH:13]=[O:14])[N:5]([C:15]2[C:20]([Cl:21])=[CH:19][C:18]([C:22]([F:25])([F:24])[F:23])=[CH:17][C:16]=2[Cl:26])[N:4]=1)#[N:2].[BH4-].[Na+].Cl.O>C(O)C>[C:1]([C:3]1[C:7]([S:8][C:9]([F:10])([F:12])[F:11])=[C:6]([CH2:13][OH:14])[N:5]([C:15]2[C:20]([Cl:21])=[CH:19][C:18]([C:22]([F:24])([F:25])[F:23])=[CH:17][C:16]=2[Cl:26])[N:4]=1)#[N:2]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 4311764Sodium borohydrideHCID 118120983-Cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-5-formyl-4-trifluoromethylthiopyrazole

Product 1

HCID 98030483-Cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-5-hydroxymethyl-4-trifluoromethylthiopyrazole

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

The product of Example 3 (5.0 g, 0.012 mol) was added to a mixture of sodium borohydride (0.5 g, 0.013 mol) in anhydrous ethanol at 5° C. After 1 hour, 10% aqueous hydrochloric acid solution (35 ml) was added slowly with copious gas evolution. The mixture was poured into water and washed with diethyl ether. The organic phase was washed with saturated sodium chloride solution, dried over magnesium sulfate, filtered and concentrated under reduced pressure to provide the title compound as a white solid, m.p. 118° C.

Workup

  1. washwashed with diethyl ether
  2. washThe organic phase was washed with saturated sodium chloride solution
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-730f102d0def4b0698f1c8d42b8d0b44
Source dataset
uspto-grants-2001_01
Patent number
US06180798B2

Reaction notes

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