1,2-Dichlorobenzene → 5-(4-chloro-3-octyloxyphenyl)-3-(2-chlorophenyl) 1-methyl-1H-1,2,4-triazole

HRID 52216Notes

Reaction equation

HRID 52216 reaction equation
[CH3:1][N:2](S(C1C=CC=CC=1)(=O)=O)[N:3]=[C:4](Cl)[C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=1[Cl:11].[Cl:22][C:23]1[CH:30]=[CH:29][C:26]([C:27]#[N:28])=[CH:25][C:24]=1[O:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH3:39].ClC1C=CC=CC=1Cl>C(Cl)(Cl)Cl.[Fe](Cl)(Cl)Cl>[Cl:22][C:23]1[CH:30]=[CH:29][C:26]([C:27]2[N:2]([CH3:1])[N:3]=[C:4]([C:5]3[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=3[Cl:11])[N:28]=2)=[CH:25][C:24]=1[O:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH3:39]

Participants

6

Reactant 3

HCID 72391,2-DichlorobenzeneHCID 214636694-Chloro-3-octyloxybenzonitrileHCID 54508988N-methyl-N-phenylsulfonyl-2-chlorobenzohydrazonoyl chloride

Product 1

HCID 214636325-(4-chloro-3-octyloxyphenyl)-3-(2-chlorophenyl) 1-methyl-1H-1,2,4-triazoleYield 42.3%

Reagents, catalysts & solvents 2

HCID 24380Iron chloride (FeCl3)CatalystHCID 6212ChloroformSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of N-methyl-N-(benzenesulfonyl)-2-chlorobenzohydrazonoyl chloride (1.50 g), 4-chloro-3-octyloxybenzonitrile (1.30 g), anhydrous iron (III) chloride (0.80 g) and o-dichlorobenzene (5 ml) is stirred at an oil bath temperature of 140° C. for 30 minutes. After cooling, the reaction mixture is dissolved in chloroform (100 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 hexaneethyl acetate as eluent to give 0.80 g of desired compound.

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 hexaneethyl acetate as eluent

Sources & evidence

ORD record
ord-48faca2029d943378334cf901ca61c11
Source dataset
uspto-grants-1997_04
Patent number
US05616594

Reaction notes

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