1,2-Dichlorobenzene → 3-(2-chloro-6-fluorophenyl)-5-(2-chloro-4-phenoxyphenyl) 1-methyl-1H-1,2,4-triazole

HRID 52222Notes

Reaction equation

HRID 52222 reaction equation
[CH3:1][N:2](S(C1C=CC(C)=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[Cl:12].[Cl:24][C:25]1[CH:32]=[C:31]([O:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[CH:30]=[CH:29][C:26]=1[C:27]#[N:28].ClC1C=CC=CC=1Cl>C(Cl)(Cl)Cl.[Fe](Cl)(Cl)Cl>[Cl:12][C:6]1[CH:7]=[CH:8][CH:9]=[C:10]([F:11])[C:5]=1[C:4]1[N:28]=[C:27]([C:26]2[CH:29]=[CH:30][C:31]([O:33][C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=3)=[CH:32][C:25]=2[Cl:24])[N:2]([CH3:1])[N:3]=1

Participants

6

Reactant 3

HCID 72391,2-DichlorobenzeneHCID 115576702-Chloro-4-phenoxybenzonitrileHCID 54347086N-methyl-N-(p-toluenesulfonyl)-2-chloro-6-fluorobenzohydrazonoyl chloride

Product 1

HCID 214636213-(2-chloro-6-fluorophenyl)-5-(2-chloro-4-phenoxyphenyl) 1-methyl-1H-1,2,4-triazoleYield 4.1%

Reagents, catalysts & solvents 2

HCID 24380Iron chloride (FeCl3)CatalystHCID 6212ChloroformSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of N-methyl-N-(p-toluenesulfonyl)-2-chloro-6-fluorobenzohydrazonoyl chloride (3.30 g), 2-chloro-4-phenoxybenzonitrile (2.30 g), anhydrous iron (III) chloride (1.60 g) and o-dichlorobenzene (10 ml) is stirred at an oil bath temperature of 140° C. for 1 hour. After cooling, the reaction mixture is dissolved in chloroform (100 ml), washed with dilute hydrochrolic 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 0.15 g of desired compound (melting point: 135.0°-140.0° C.).

Workup

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

Sources & evidence

ORD record
ord-4141c9a6c7d8420fb4ce607437f93ee4
Source dataset
uspto-grants-1997_04
Patent number
US05616594

Reaction notes

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