Citric Acid → N-(4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazol-3-ylmethyl)naphthalene-2-caboxamide

HRID 963028Notes

Reaction equation

HRID 963028 reaction equation
C1(C)C=CC(S(O)(=O)=O)=CC=1.C1(C)C=CC(S(O)(=O)=O)=CC=1.[NH2:23][CH2:24][C:25]1[N:29]([C:30]2[S:31][C:32]([CH2:44][CH3:45])=[CH:33][C:34]=2[C:35](=[O:43])[C:36]2[CH:41]=[CH:40][CH:39]=[CH:38][C:37]=2[Cl:42])[C:28]([CH3:46])=[N:27][N:26]=1.[CH:47]1[C:56]2[C:51](=[CH:52][CH:53]=[CH:54][CH:55]=2)[CH:50]=[CH:49][C:48]=1[C:57](O)=[O:58].C1(P(N=[N+]=[N-])(C2C=CC=CC=2)=O)C=CC=CC=1.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>CN(C)C=O.C(N(CC)CC)C>[Cl:42][C:37]1[CH:38]=[CH:39][CH:40]=[CH:41][C:36]=1[C:35]([C:34]1[CH:33]=[C:32]([CH2:44][CH3:45])[S:31][C:30]=1[N:29]1[C:28]([CH3:46])=[N:27][N:26]=[C:25]1[CH2:24][NH:23][C:57]([C:48]1[CH:49]=[CH:50][C:51]2[C:56](=[CH:55][CH:54]=[CH:53][CH:52]=2)[CH:47]=1)=[O:58])=[O:43]

Participants

7

Reactant 4

HCID 311Citric AcidHCID 71232-Naphthoic acidHCID 199401P,P-Diphenylphosphinic azideHCID 190850953-Aminomethyl-4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazole ditosylate

Product 1

HCID 67664553N-(4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazol-3-ylmethyl)naphthalene-2-caboxamideYield 19.6%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolvent2×HCID 8471TriethylamineSolvent

Procedure

3-Aminomethyl-4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazole di-p-toluenesulfonate (3.70 g) was dissolved in dimethylformamide (20 ml). Naphthalene-2-carboxylic acid (0.95 g) and diphenylphosphoryl azide (1.29 ml) were added under ice-cooling and dissolved in the solution. A solution of triethylamine (2.24 ml) in dimethylformamide was dropwise added, and the mixture was allowed to stand overnight at room temperature. Then, a 10% aqueous citric acid solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with a saturated aqueous sodium hydrogencarbonate solution and saturated brine, and dried over magnesium sulfate. The solvent was evaporated, and the residue was recrystallized from ethyl acetate to give 0.53 g of N-(4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazol-3-ylmethyl)naphthalene-2-caboxamide.

Workup

  1. temperaturecooling
  2. dissolutiondissolved in the solution
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe organic layer was washed with a saturated aqueous sodium hydrogencarbonate solution and saturated brine
  5. dry with materialdried over magnesium sulfate
  6. customThe solvent was evaporated
  7. customthe residue was recrystallized from ethyl acetate

Sources & evidence

ORD record
ord-e92a2836da4e46778b935b1390037bab
Source dataset
uspto-grants-1998_06
Patent number
US05760032

Reaction notes

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