4-(2-(5-fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)phenyl)ethyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine → 4-(2-(5-Fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)phenyl)ethyl)pyridin-3-yl)-6-methyl-1,3,5-triazin-2-amine

HRID 1621592Notes

Reaction equation

HRID 1621592 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([NH:10][C:11]2[C:16]([C:17]3[N:22]=[C:21]([CH3:23])[N:20]=[C:19]([N:24](CC4C=CC(OC)=CC=4)CC4C=CC(OC)=CC=4)[N:18]=3)=[CH:15][C:14]([CH:43]([C:45]3[CH:50]=[CH:49][C:48]([S:51]([CH3:54])(=[O:53])=[O:52])=[CH:47][CH:46]=3)[CH3:44])=[CH:13][N:12]=2)[CH:5]=[N:6][C:7]=1[O:8][CH3:9]>FC(F)(F)C(O)=O>[F:1][C:2]1[CH:3]=[C:4]([NH:10][C:11]2[C:16]([C:17]3[N:22]=[C:21]([CH3:23])[N:20]=[C:19]([NH2:24])[N:18]=3)=[CH:15][C:14]([CH:43]([C:45]3[CH:50]=[CH:49][C:48]([S:51]([CH3:54])(=[O:52])=[O:53])=[CH:47][CH:46]=3)[CH3:44])=[CH:13][N:12]=2)[CH:5]=[N:6][C:7]=1[O:8][CH3:9]

Participants

3

Reactant 1

HCID 666000674-(2-(5-fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)phenyl)ethyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine

Product 1

HCID 595483864-(2-(5-Fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)phenyl)ethyl)pyridin-3-yl)-6-methyl-1,3,5-triazin-2-amineYield 37.1%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Conditions

Temperature
75 °C

Procedure

4-(2-(5-Fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)phenyl)ethyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (744 mg, 0.992 mmol) was dissolved in trifluoroacetic acid (Aldrich, redistilled, 99+%, 10 mL) and the flask was fitted with a reflux condenser and placed in a preheated oil bath (75° C.) and stirred overnight. Then, the reaction was cooled to room temperature, concentrated, diluted with DCM (30 mL), and treated with saturated sodium bicarbonate (30 mL) and with 5N NaOH to raise the pH of the aqueous phase to about 7. The layers were separated, and the aqueous phase was extracted with DCM and with 10:1 DCM/MeOH). The organic extracts were combined, dried over sodium sulfate, filtered, concentrated, and purified on a silica gel filter (150 mL fritted filter with about 2 inches of silica gel; 100:1 DCM/MeOH to 75:1 DCM/MeOH to 50:1 DCM/MeOH). The fractions with product were collected, concentrated, and purified on HPLC (10% to 100% MeCN/water with 0.1% TFA over 28 min using a total flow rate of 100 mL/min) to give 4-(2-(5-fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)phenyl)ethyl)pyridin-3-yl)-6-methyl-1,3,5-triazin-2-amine (187.7 mg, 36% yield). 1H NMR (CDCl3, 400 MHZ) δ 11.60 (s, 1H), 8.73 (d, J=2.35 Hz, 1H), 8.24 (d, J=2.74 Hz, 1H), 8.06 (dd, J=11.93 Hz, 1.76 Hz, 1H), 8.01 (d, J=2.35 Hz, 1H), 7.90 (d, J=8.41 Hz, 2H), 7.45 (d, J=8.22 Hz, 2H), 4.30-4.23 (m, 1H), 4.04 (s, 3H), 3.06 (s, 3H), 2.64 (s, 3H), 1.74 (d, J=7.24 Hz, 3H). m/z (ESI, pos. ion) 510 (M+H)+.

Workup

  1. customthe flask was fitted with a reflux condenser
  2. customplaced in a preheated oil bath
  3. temperatureThen, the reaction was cooled to room temperature
  4. concentrationconcentrated
  5. additiondiluted with DCM (30 mL)
  6. additiontreated with saturated sodium bicarbonate (30 mL) and with 5N NaOH
  7. temperatureto raise the pH of the aqueous phase to about 7
  8. customThe layers were separated
  9. extractionthe aqueous phase was extracted with DCM and with 10:1 DCM/MeOH)
  10. dry with materialdried over sodium sulfate
  11. filtrationfiltered
  12. concentrationconcentrated
  13. custompurified on a silica gel
  14. filtrationfilter (150 mL fritted filter with about 2 inches of silica gel; 100:1 DCM/MeOH to 75:1 DCM/MeOH to 50:1 DCM/MeOH)
  15. customThe fractions with product were collected
  16. concentrationconcentrated
  17. custompurified on HPLC (10% to 100% MeCN/water with 0.1% TFA over 28 min

Sources & evidence

ORD record
ord-d89226b8d75f4bbab99072cb95c85ac1
Source dataset
uspto-grants-2014_07
Patent number
US08772480B2

Reaction notes

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