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Water → [5-(3,5-dichloro-phenylsulphanyl)-1-ethyl-3-methyl-1H-pyrazol-4-ylmethyl]-pyridin-3-yl-amine

HRID 47627
Notes
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Reaction equation

HRID 47627 reaction equation
BrC[CH2:3][C:4]1[C:5]([CH3:20])=[N:6][N:7]([CH2:18][CH3:19])[C:8]=1[S:9][C:10]1[CH:15]=[C:14]([Cl:16])[CH:13]=[C:12]([Cl:17])[CH:11]=1.[NH2:21][C:22]1[CH:23]=[N:24][CH:25]=[CH:26][CH:27]=1.[H-].[Na+].O>CN(C)C=O>[Cl:16][C:14]1[CH:15]=[C:10]([S:9][C:8]2[N:7]([CH2:18][CH3:19])[N:6]=[C:5]([CH3:20])[C:4]=2[CH2:3][NH:21][C:22]2[CH:23]=[N:24][CH:25]=[CH:26][CH:27]=2)[CH:11]=[C:12]([Cl:17])[CH:13]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 100093-AminopyridineHCID 24758Sodium hydrideHCID 695157944-bromoethyl-5-(3,5-dichloro-phenylsulfanyl)-1-ethyl-3-methyl-1 H-pyrazole

Product 1

HCID 22747459[5-(3,5-dichloro-phenylsulphanyl)-1-ethyl-3-methyl-1H-pyrazol-4-ylmethyl]-pyridin-3-yl-amineYield 7.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
110 °C

Procedure

A mixture of 227 mg of 4-bromoethyl-5-(3,5-dichloro-phenylsulphanyl)-1-ethyl-3-methyl-1H-pyrazole, 62 mg of 3-aminopyridine and 36 mg of sodium hydride (60% in mineral oil) in 3 ml of anhydrous N,N-dimethylformamide was stirred under nitrogen at 110° C. for 15 minutes. Water (10 ml) was added and the mixture was extracted three times with 8 ml of dichloromethane. The combined extracts were dried over magnesium sulphate, filtered and evaporated. The residue was purified by flash chromatography on silica gel using dichloromethane/methanol for the elution to give 17 mg of [5-(3,5-dichloro-phenylsulphanyl)-1-ethyl-3-methyl-1H-pyrazol-4-ylmethyl]-pyridin-3-yl-amine as a brown gum. 1H NMR (DMSO-d6) 1.19 (t, 3H), 2.27 (s, 3H), 4.05-4.11 (m, 4H), 6.03 (t, 1H), 6.87 (d, 1H), 6.99 (m, 1H), 7.04 (d, 2H), 7.44 (t, 1H), 7.72 (dd, 1H), 7.94 (d, 1H).

Workup

  1. extractionthe mixture was extracted three times with 8 ml of dichloromethane
  2. dry with materialThe combined extracts were dried over magnesium sulphate
  3. filtrationfiltered
  4. customevaporated
  5. customThe residue was purified by flash chromatography on silica gel
  6. washfor the elution

Sources & evidence

ORD record
ord-d202855583914bc5811b40310b3471ae
Source dataset
uspto-grants-2004_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06699887B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes