4-Methyl-3-nitrobenzoyl chloride → 6-(4-Methyl-3-nitrophenyl)-3-(3,4,5-trimethoxyphenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole

HRID 15025

Reaction equation

HRID 15025 reaction equation
[NH2:1][N:2]1[C:6]([C:7]2[CH:12]=[C:11]([O:13][CH3:14])[C:10]([O:15][CH3:16])=[C:9]([O:17][CH3:18])[CH:8]=2)=[N:5][N:4]=[C:3]1[SH:19].[CH3:20][C:21]1[CH:29]=[CH:28][C:24]([C:25](Cl)=O)=[CH:23][C:22]=1[N+:30]([O-:32])=[O:31]>P(Cl)(Cl)(Cl)=O>[CH3:20][C:21]1[CH:29]=[CH:28][C:24]([C:25]2[S:19][C:3]3=[N:4][N:5]=[C:6]([C:7]4[CH:8]=[C:9]([O:17][CH3:18])[C:10]([O:15][CH3:16])=[C:11]([O:13][CH3:14])[CH:12]=4)[N:2]3[N:1]=2)=[CH:23][C:22]=1[N+:30]([O-:32])=[O:31]

Participants

4

Reactant 2

HCID 663234-Methyl-3-nitrobenzoyl chlorideHCID 178488244HCID 178488244, compound

Product 1

HCID 249548716-(4-Methyl-3-nitrophenyl)-3-(3,4,5-trimethoxyphenyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoleYield 87.9%

Reagents, catalysts & solvents 1

HCID 24813Phosphorus oxychlorideSolvent

Procedure

A mixture of 4-amino-3-mercapto-5-(3,4,5-trimethoxyphenyl)-4H-1,2,4-triazole (220 mg, 0.78 mmol) and 4-methyl-3-nitrobenzoyl chloride (156 mg, 0.78 mmol) in phosphoryl chloride (2 mL) was refluxed for 3 h. The solvent was evaporated and the residue was dissolved in dichloromethane (20 mL). It was neutralized by aqueous sodium carbonate. The organic layer was dried over sodium sulfate, and concentrated to give 293 mg (85%) of the title compound as solid. 1H NMR (CDCl3): 8.59 (d, J=2.1 Hz, 1H), 8.05-8.01 (dd, J=7.8, 1.8 Hz, 1H), 7.73 (s, 1H), 7.62 (d, J=8.1 Hz, 1H), 4.02 (s, 6H), 3.95 (s, 3H), 2.75 (s, 3H).

Workup

  1. temperaturewas refluxed for 3 h
  2. customThe solvent was evaporated
  3. dissolutionthe residue was dissolved in dichloromethane (20 mL)
  4. dry with materialThe organic layer was dried over sodium sulfate
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-321f1925f9ae4c01af76f2f17cfae4fa
Source dataset
uspto-grants-2010_06
Patent number
US07732468B2

Linked notes

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