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

HRID 1811982Notes

Reaction equation

HRID 1811982 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]([N:45]3[CH2:50][CH2:49][N:48]([S:51]([CH3:54])(=[O:53])=[O:52])[CH2:47][CH2:46]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]([N:45]3[CH2:46][CH2:47][N:48]([S:51]([CH3:54])(=[O:53])=[O:52])[CH2:49][CH2:50]3)[CH3:44])=[CH:13][N:12]=2)[CH:5]=[N:6][C:7]=1[O:8][CH3:9]

Participants

3

Reactant 1

HCID 666001254-(2-(5-fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)piperazin-1-yl)ethyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine

Product 1

HCID 595482014-(2-((5-Fluoro-6-methoxypyridin-3-yl)amino)-5-(1-(4-(methylsulfonyl)piperazin-1-yl)ethyl)pyridin-3-yl)-6-methyl-1,3,5-triazin-2-amineYield 62.4%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Conditions

Temperature
76 °C

Procedure

4-(2-(5-Fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)piperazin-1-yl)ethyl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (456.7 mg, 0.6026 mmol) was dissolved in trifluoroacetic acid (9.5 mL) and the reaction flask was fitted with a reflux condenser and put in a preheated oil bath (75-77° C.) and stirred for 16 h. The reaction was cooled to room temperature and concentrated. The reaction was diluted with DCM (40 mL) and treated with saturated sodium bicarbonate and 5 N NaOH to raise the pH of the aqueous phase to about 8. Then, the layers were separated and the aqueous phase was extracted with DCM and 10:1 DCM/MeOH. The organic extracts were combined, dried over sodium sulfate, filtered, concentrated, treated with MeOH, and filtered. The solid was washed with MeOH. The solid was not >95% pure by HPLC, so the filtrate and solid were combined, concentrated, and purified on a silica gel column according to the procedure described by Still et al. (Journal of Organic Chemistry, 1978, 43, 2923-2925) using this eluent system: 30:1 DCM/2 N ammonia in MeOH to 20:1 DCM/2 N ammonia in MeOH to 15:1 DCM/2 N ammonia in MeOH to 5:1 DCM/2 N ammonia in MeOH. The fractions with product were collected, concentrated, treated with MeOH, and filtered. The solid was washed with MeOH, collected, and dried under high vacuum to give 4-(2-(5-fluoro-6-methoxypyridin-3-ylamino)-5-(1-(4-(methylsulfonyl)piperazin-1-yl)ethyl)pyridin-3-yl)-6-methyl-1,3,5-triazin-2-amine (194.7 mg, 62% yield) as a yellow powder. 1H NMR (CDCl3, 400 MHz) δ 11.93 (s, 1H), 8.71 (d, J=2.54 Hz, 1H), 8.31 (t, J=2.25 Hz, 1H), 8.27 (d, J=2.35 Hz, 1H), 8.05 (d, J=2.15 Hz, 1H), 5.42 (br s, 2H), 4.04 (s, 3H), 3.56 (quartet, J=6.65 Hz, 1H), 3.24 (t, J=4.69 Hz, 4H), 2.78 (s, 3H), 2.68-2.54 (m, 7H), 1.44 (t, J=6.85 Hz, 3H). m/z (ESI, pos. ion) 518 (M+H)+.

Workup

  1. customthe reaction flask was fitted with a reflux condenser
  2. customput in a preheated oil bath
  3. temperatureThe reaction was cooled to room temperature
  4. concentrationconcentrated
  5. additionThe reaction was diluted with DCM (40 mL)
  6. additiontreated with saturated sodium bicarbonate and 5 N NaOH
  7. temperatureto raise the pH of the aqueous phase to about 8
  8. customThen, the layers were separated
  9. extractionthe aqueous phase was extracted with DCM and 10:1 DCM/MeOH
  10. dry with materialdried over sodium sulfate
  11. filtrationfiltered
  12. concentrationconcentrated
  13. additiontreated with MeOH
  14. filtrationfiltered
  15. washThe solid was washed with MeOH
  16. concentrationconcentrated
  17. custompurified on a silica gel column
  18. customThe fractions with product were collected
  19. concentrationconcentrated
  20. additiontreated with MeOH
  21. filtrationfiltered
  22. washThe solid was washed with MeOH
  23. customcollected
  24. customdried under high vacuum

Sources & evidence

ORD record
ord-35ba0c409b0d438ab16e38fca273d87b
Source dataset
uspto-grants-2013_01
Patent number
US08362241B2

Reaction notes

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