1,2-Dichlorobenzene → 3-(2,6-difluorophenyl)-5-(2-fluoro-5-undecylphenyl) 1-methyl-1H-1,2,4-triazole

HRID 1940709Notes

Reaction equation

HRID 1940709 reaction equation
[CH3:1][N:2](S(C1C=CC=CC=1)(=O)=O)[N:3]=[C:4](Cl)[C:5]1[C:10]([F:11])=[CH:9][CH:8]=[CH:7][C:6]=1[F:12].[F:23][C:24]1[CH:31]=[CH:30][C:29]([CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH3:42])=[CH:28][C:25]=1[C:26]#[N:27].[Cl-].[Al+3].[Cl-].[Cl-].ClC1C=CC=CC=1Cl>C(Cl)(Cl)Cl>[F:11][C:10]1[CH:9]=[CH:8][CH:7]=[C:6]([F:12])[C:5]=1[C:4]1[N:27]=[C:26]([C:25]2[CH:28]=[C:29]([CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH3:42])[CH:30]=[CH:31][C:24]=2[F:23])[N:2]([CH3:1])[N:3]=1

Participants

6

Reactant 4

HCID 72391,2-DichlorobenzeneHCID 6451240Aluminum(III) ChlorideHCID 214635852-Fluoro-5-undecylbenzonitrileHCID 53707170N-methyl-N-(benzenesulfonyl)-2,6-difluorobenzohydrazonoyl chloride

Product 1

HCID 214636603-(2,6-difluorophenyl)-5-(2-fluoro-5-undecylphenyl) 1-methyl-1H-1,2,4-triazoleYield 65.6%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of N-methyl-N-(benzenesulfonyl)-2,6-difluorobenzohydrazonoyl chloride (1.28 g), 2-fluoro-5-undecylbenzonitrile (1.09 g), anhydrous aluminum chloride (0.55 g) and o-dichlorobenzene (10 ml) is stirred at an oil bath temperature of 140° C. for 30 minutes. After cooling, the reaction mixture is dissolved in chloroform (200 ml), washed with dilute hydrochloric acid, dilute aqueous solution of sodium hydroxide and saline in this order, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The concentrate is purified by silica gel column chromatography using mixed solvent of hexane-ethyl acetate as eluent to give 1.08 g of desired compound (melting point: 70.0°-73.0° C.).

Workup

  1. temperatureAfter cooling
  2. washwashed with dilute hydrochloric acid, dilute aqueous solution of sodium hydroxide and saline in this order
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe concentrate is purified by silica gel column chromatography
  6. additionusing mixed solvent of hexane-ethyl acetate as eluent

Sources & evidence

ORD record
ord-3f5c77b17cf7495096670f74bfd8ff22
Source dataset
uspto-grants-1997_12
Patent number
US05700824

Reaction notes

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