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Trifluoromethanesulfonic acid → N-(5-(3-(4-amino-6-methyl-1,3,5-triazin-2-yl)-5-chloropyridin-2-ylamino)pyridin-2-yl)acetamide

HRID 1621684
Notes
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Reaction equation

HRID 1621684 reaction equation
COC1C=CC(C[N:8](CC2C=CC(OC)=CC=2)[C:9]2[N:14]=[C:13]([CH3:15])[N:12]=[C:11]([C:16]3[C:17]([NH:23][C:24]4[CH:25]=[CH:26][C:27]([NH:30][C:31](=[O:33])[CH3:32])=[N:28][CH:29]=4)=[N:18][CH:19]=[C:20]([Cl:22])[CH:21]=3)[N:10]=2)=CC=1.FC(F)(F)S(O)(=O)=O>C(O)(C(F)(F)F)=O>[NH2:8][C:9]1[N:14]=[C:13]([CH3:15])[N:12]=[C:11]([C:16]2[C:17]([NH:23][C:24]3[CH:25]=[CH:26][C:27]([NH:30][C:31](=[O:33])[CH3:32])=[N:28][CH:29]=3)=[N:18][CH:19]=[C:20]([Cl:22])[CH:21]=2)[N:10]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 62406Trifluoromethanesulfonic acidHCID 66610813HCID 66610813, compound

Product 1

HCID 59548295N-(5-(3-(4-amino-6-methyl-1,3,5-triazin-2-yl)-5-chloropyridin-2-ylamino)pyridin-2-yl)acetamideYield 47.6%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Conditions

Temperature
75 °C

Procedure

A solution of N-(5-(3-(4-(bis(4-methoxybenzyl)amino)-6-methyl-1,3,5-triazin-2-yl)-5-chloropyridin-2-ylamino)pyridin-2-yl)acetamide (0.060 g, 0.098 mmol) and trifluoromethanesulfonic acid (TCI) (40 μL, 0.450 mmol) in TFA (2 mL) was stirred at rt for 2.5 h. Then the mixture was stirred at 75° C. for 2 h. Most of the TFA was removed in vacuo and then the residue was taken up in a small amount of DCM. Solid NaHCO3 was added in portions until no more effervescence was observed. Water was added and the resulting solid was collected by filtration. The crude product was purified by preparative HPLC using Phenomenex, Gemni 5 micron C18 100×30 mm column (0%-10% CH3CN w/0.1% TFA/H2O w/0.1% TFA in 10 min). The fractions containing product formed a precipitate which was collected by filtration and dried in a vacuum oven to give N-(5-(3-(4-amino-6-methyl-1,3,5-triazin-2-yl)-5-chloropyridin-2-ylamino)pyridin-2-yl)acetamide (0.0173 g, 36% yield) as a yellow solid. 1H NMR (300 MHz, d6-DMSO) δ 11.87 (s, 1H); 10.43 (s, 1H); 8.67-8.78 (m, 2H); 8.37 (br. s., 1H); 8.15-8.24 (m, 1H); 7.93-8.07 (m, 2H); 7.84 (br. s., 1H); 2.45 (s, 3H); 2.09 (s, 3H). m/z (ESI, +ve ion) 371.0 (M+H)+.

Workup

  1. customMost of the TFA was removed in vacuo
  2. additionSolid NaHCO3 was added in portions until no more effervescence
  3. additionWater was added
  4. filtrationthe resulting solid was collected by filtration
  5. customThe crude product was purified by preparative HPLC
  6. customC18 100×30 mm column (0%-10% CH3CN w/0.1% TFA/H2O w/0.1% TFA in 10 min)
  7. additionThe fractions containing product
  8. customformed a precipitate which
  9. filtrationwas collected by filtration
  10. customdried in a vacuum oven

Sources & evidence

ORD record
ord-c5619691d9884f0399aae46cd053422b
Source dataset
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08772480B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes