Triethylamine → 4-[6-(4-Hydroxy-phenyl)-3-{(E)-2-[3-(2-oxo-pyrrolidin-1-yl)-phenyl]-vinyl}-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester

HRID 82046

Reaction equation

HRID 82046 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]([C:16]2[C:17]3[C:31]([CH:32]=[CH2:33])=[N:30][N:29]([CH:34]4[CH2:39][CH2:38][CH2:37][CH2:36][O:35]4)[C:18]=3[N:19]=[C:20]([C:22]3[CH:27]=[CH:26][C:25]([OH:28])=[CH:24][CH:23]=3)[CH:21]=2)=[O:15])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].I[C:41]1[CH:42]=[C:43]([N:47]2[CH2:51][CH2:50][CH2:49][C:48]2=[O:52])[CH:44]=[CH:45][CH:46]=1.C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.C(N(CC)CC)C>CN(C=O)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][N:11]([C:14]([C:16]2[C:17]3[C:31](/[CH:32]=[CH:33]/[C:45]4[CH:46]=[CH:41][CH:42]=[C:43]([N:47]5[CH2:51][CH2:50][CH2:49][C:48]5=[O:52])[CH:44]=4)=[N:30][N:29]([CH:34]4[CH2:39][CH2:38][CH2:37][CH2:36][O:35]4)[C:18]=3[N:19]=[C:20]([C:22]3[CH:27]=[CH:26][C:25]([OH:28])=[CH:24][CH:23]=3)[CH:21]=2)=[O:15])[CH2:12][CH2:13]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 80271Tri-o-tolylphosphineHCID 606488551-(3-Iodophenyl)pyrrolidin-2-oneHCID 1363595044-[6-(4-hydroxy-phenyl)-1-(tetrahydro-pyran-2-yl)-3-vinyl-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester

Product 1

HCID 1363595064-[6-(4-Hydroxy-phenyl)-3-{(E)-2-[3-(2-oxo-pyrrolidin-1-yl)-phenyl]-vinyl}-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl esterYield 67%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
125 °C

Procedure

To a solution of 4-[6-(4-hydroxy-phenyl)-1-(tetrahydro-pyran-2-yl)-3-vinyl-1H-pyrazolo[3,4-b]pyridine-4-carbonyl]-piperazine-1-carboxylic acid tert-butyl ester (0.30 g, 0.56 mmol) in DMF (2.55 mL) were added 1-(3-iodo-phenyl)-pyrrolidin-2-one (0.19 g, 0.67 mmol), tri(o-tolyl)phosphine (34 mg, 0.11 mmol) and triethylamine (2.55 mL). The resulting solution was degassed using argon, palladium acetate (6 mg, 0.03 mmol) was then added and the reaction mixture was heated at 125° C. overnight. The reaction mixture was concentrated under vacuum and the residue taken up in water and then acidified to pH=1. The precipitate was filtered, washed with water and then dried under vacuum. The crude residue was purified by silica gel column chromatography using a gradient of EtOAc (0-100%) in cyclohexane to yield the title compound as a beige solid (0.26 g, 66%).

Workup

  1. customThe resulting solution was degassed
  2. additionwas then added
  3. concentrationThe reaction mixture was concentrated under vacuum
  4. filtrationThe precipitate was filtered
  5. washwashed with water
  6. customdried under vacuum
  7. customThe crude residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-83eb91e9840b426e8852433df21a438f
Source dataset
uspto-grants-2014_09
Patent number
US08846712B2

Linked notes

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