Potassium Acetate → Tert-butyl 4-(1-(5-(4-(bis(4-methoxybenzyl)amino)-6-methyl-1,3,5-triazin-2-yl)-6-fluoropyridin-3-yl)ethyl)piperazine-1-carboxylate

HRID 1812262Notes

Reaction equation

HRID 1812262 reaction equation
Cl[C:2]1[N:7]=[C:6]([CH3:8])[N:5]=[C:4]([N:9]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)[CH2:10][C:11]2[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[CH:13][CH:12]=2)[N:3]=1.[C:28]([O:32][C:33]([N:35]1[CH2:40][CH2:39][N:38]([CH:41]([C:43]2[CH:44]=[C:45](B(O)O)[C:46]([F:49])=[N:47][CH:48]=2)[CH3:42])[CH2:37][CH2:36]1)=[O:34])([CH3:31])([CH3:30])[CH3:29].C([O-])(=O)C.[K+]>O1CCOCC1.ClCCl.O.[Cl-].[Na+].O>[CH3:18][O:17][C:14]1[CH:15]=[CH:16][C:11]([CH2:10][N:9]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)[C:4]2[N:5]=[C:6]([CH3:8])[N:7]=[C:2]([C:45]3[CH:44]=[C:43]([CH:41]([N:38]4[CH2:37][CH2:36][N:35]([C:33]([O:32][C:28]([CH3:29])([CH3:31])[CH3:30])=[O:34])[CH2:40][CH2:39]4)[CH3:42])[CH:48]=[N:47][C:46]=3[F:49])[N:3]=2)=[CH:12][CH:13]=1

Participants

8

Reactant 3

HCID 517044Potassium AcetateHCID 595482094-chloro-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amineHCID 666004735-(1-(4-(Tert-butoxycarbonyl)piperazin-1-yl)ethyl)-2-fluoropyridin-3-ylboronic acid

Product 1

HCID 66611395Tert-butyl 4-(1-(5-(4-(bis(4-methoxybenzyl)amino)-6-methyl-1,3,5-triazin-2-yl)-6-fluoropyridin-3-yl)ethyl)piperazine-1-carboxylateYield 100%

Reagents, catalysts & solvents 4

HCID 962WaterSolvent2×HCID 6344DichloromethaneSolventHCID 312751,4-DioxaneSolventHCID 57417360Sodium chloride; waterSolvent

Conditions

Temperature
120 °C

Procedure

A glass microwave reaction vessel was charged with 4-chloro-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (0.300 g, 0.780 mmol) and 5-(1-(4-(tert-butoxycarbonyl)piperazin-1-yl)ethyl)-2-fluoropyridin-3-ylboronic acid (0.385 g, 1.091 mmol) in dioxane (3 mL). Then A-Phos (0.055 g, 0.078 mmol), potassium acetate (0.230 g, 2.339 mmol) and water (0.5 mL) were added into the reaction mixture. The reaction mixture was stirred and heated in a CEM Explorer Microwave at 120° C. for 10 min (120 watts, Powermax feature on). The mixture was diluted with dichloromethane (10 mL), water (10 mL) and brine (5 mL). The organic layer was collected by extracting with dichloromethane (3×10 mL). The combined organic extracts were dried (magnesium sulfate), filtered and concentrated in vacuo to give the crude material as tan oil. The crude material was adsorbed onto silica gel and purified by chromatography through a silica-gel column (40 g) eluting with 100% ethyl acetate to give tert-butyl 4-(1-(5-(4-(bis(4-methoxybenzyl)amino)-6-methyl-1,3,5-triazin-2-yl)-6-fluoropyridin-3-yl)ethyl)piperazine-1-carboxylate (0.513 g, 0.780 mmol, 100% yield) as a tan solid. 1H NMR (400 MHz, CDCl3) δ 8.19-8.32 (m, 1H) 7.91 (d, J=8.02 Hz, 1H) 7.22 (dd, J=8.61, 2.93 Hz, 4H) 6.83-6.97 (m, 4H) 4.82 (d, J=9.39 Hz, 4H) 3.76-3.83 (m, 6H) 3.67-3.71 (m, 3H) 3.40 (s, 4H) 3.01 (s, 1H) 2.55 (s, 3H) 2.45 (s, 2H) 2.37 (s, 2H) 2.04-2.07 (m, 3H) 1.38-1.53 (m, 9H). m/z (ESI, +ve ion) 658.3 (M+H)+.

Workup

  1. customA glass microwave reaction vessel
  2. customThe organic layer was collected
  3. extractionby extracting with dichloromethane (3×10 mL)
  4. dry with materialThe combined organic extracts were dried (magnesium sulfate)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customto give the crude material as tan oil
  8. custompurified by chromatography through a silica-gel column (40 g)
  9. washeluting with 100% ethyl acetate

Sources & evidence

ORD record
ord-06ff3e7137294599b7898823de9b2a29
Source dataset
uspto-grants-2013_01
Patent number
US08362241B2

Reaction notes

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