Sodium Carbonate → N-((4-ethyl-6-methyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-1-isopropyl-6-(2,2,6,6-tetramethyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxamide

HRID 1854078Notes

Reaction equation

HRID 1854078 reaction equation
Br[C:2]1[CH:3]=[C:4]([C:14]([NH:16][CH2:17][C:18]2[C:19](=[O:27])[NH:20][C:21]([CH3:26])=[CH:22][C:23]=2[CH2:24][CH3:25])=[O:15])[C:5]2[CH:10]=[N:9][N:8]([CH:11]([CH3:13])[CH3:12])[C:6]=2[N:7]=1.[CH3:28][C:29]1([CH3:46])[CH2:34][C:33](B2OC(C)(C)C(C)(C)O2)=[CH:32][C:31]([CH3:45])([CH3:44])[NH:30]1.O1CCOCC1.O.C([O-])([O-])=O.[Na+].[Na+]>O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:24]([C:23]1[CH:22]=[C:21]([CH3:26])[NH:20][C:19](=[O:27])[C:18]=1[CH2:17][NH:16][C:14]([C:4]1[C:5]2[CH:10]=[N:9][N:8]([CH:11]([CH3:13])[CH3:12])[C:6]=2[N:7]=[C:2]([C:33]2[CH2:32][C:31]([CH3:45])([CH3:44])[NH:30][C:29]([CH3:46])([CH3:28])[CH:34]=2)[CH:3]=1)=[O:15])[CH3:25]

Participants

7

Reactant 4

HCID 10340Sodium CarbonateHCID 218864351,4-Dioxane--water (1/1)HCID 467380232,2,6,6-Tetramethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridineHCID 867034306-bromo-N-((4-ethyl-6-methyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-1-isopropyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide

Product 1

HCID 68295773N-((4-ethyl-6-methyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-1-isopropyl-6-(2,2,6,6-tetramethyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxamideYield 38%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Conditions

Temperature
100 °C

Procedure

To a stirred solution of 6-bromo-N-((4-ethyl-6-methyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-1-isopropyl-1H-pyrazolo[3,4-b]pyridine-4-carboxamide (0.37 g, 0.85 mmol) and 2,2,6,6-tetramethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine (1.2 equiv.) in dioxane/water mixture (3 mL+1 mL for 1 mmol), Na2CO3 (3.6 equiv.) was added and solution purged with argon for 15 min. Then Pd(PPh3)4 (0.05 equiv.) was added and argon was purged again for 10 min. Reaction mass was heated at 100° C. for 2 h. On completion, reaction mixture was diluted with water and extracted with 10% MeOH/DCM. Combined organic layers were dried over Na2SO4 and solvent removed under reduced pressure to afford crude material which was purified by column chromatography over silica gel to afford the desired compound. (38% yield). LCMS: 491.25 (M+1)+; HPLC: 95.01% (@ 254 nm) (Rt; 5.463); 1H NMR (DMSO-d6, 400 MHz) δ 11.55 (s, 1H), 8.87 (s, 1H), 8.26 (s, 1H), 7.79 (s, 1H), 6.80 (s, 1H), 5.91 (s, 1H), 5.22-5.19 (m, 1H), 4.39 (d, 2H, J=4.0 Hz), 2.42-2.40 (m, 4H), 2.24 (s, 3H), 1.49 (d, 6H, J=6 Hz). 1.24 (s, 6H), 1.14 (s, 6H), 1.11 (m, 3H).

Workup

  1. customsolution purged with argon for 15 min
  2. customargon was purged again for 10 min
  3. customReaction mass
  4. customOn completion, reaction mixture
  5. extractionextracted with 10% MeOH/DCM
  6. dry with materialCombined organic layers were dried over Na2SO4 and solvent
  7. customremoved under reduced pressure
  8. customto afford crude material which
  9. customwas purified by column chromatography over silica gel

Sources & evidence

ORD record
ord-358682525edf443db820ce8bf3059a81
Source dataset
uspto-grants-2015_02
Patent number
US08962620B2

Reaction notes

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