Methyl Acrylate → 3-{4-[2-(6-Methyl-pyridin-2-yl)-5,6-dihydro-4H-pyrrolo [1,2-b]pyrazol-3-yl]-quinolin-7-yl}-acrylic Acid Methyl Ester

HRID 8252

Reaction equation

HRID 8252 reaction equation
Br[C:2]1[CH:11]=[C:10]2[C:5]([C:6]([C:12]3[C:16]([C:17]4[CH:22]=[CH:21][CH:20]=[C:19]([CH3:23])[N:18]=4)=[N:15][N:14]4[CH2:24][CH2:25][CH2:26][C:13]=34)=[CH:7][CH:8]=[N:9]2)=[CH:4][CH:3]=1.C(N(CCCC)CCCC)CCC.[C:40]([O:44][CH3:45])(=[O:43])[CH:41]=[CH2:42].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>C1(C)C=CC=CC=1.CC([O-])=O.CC([O-])=O.[Pd+2].CN(C)C=O>[CH3:45][O:44][C:40](=[O:43])[CH:41]=[CH:42][C:2]1[CH:11]=[C:10]2[C:5]([C:6]([C:12]3[C:16]([C:17]4[CH:22]=[CH:21][CH:20]=[C:19]([CH3:23])[N:18]=4)=[N:15][N:14]4[CH2:24][CH2:25][CH2:26][C:13]=34)=[CH:7][CH:8]=[N:9]2)=[CH:4][CH:3]=1

Participants

8

Reactant 4

HCID 7294Methyl AcrylateHCID 7622TributylamineHCID 80271Tri-o-tolylphosphine2×HCID 219925227-Bromo-4-(2-(6-methylpyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)quinoline

Product 1

HCID 666794803-{4-[2-(6-Methyl-pyridin-2-yl)-5,6-dihydro-4H-pyrrolo [1,2-b]pyrazol-3-yl]-quinolin-7-yl}-acrylic Acid Methyl Ester

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalyst2×HCID 1140TolueneSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

Nitrogen is bubbled through a solution of 7-bromo-4-[2-(6-methyl-pyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl]-quinoline (0.050 g, 0.12 mmol), tributylamine (0.032 mL, 0.17 mmol), methyl acrylate (0.027 mL, 0.24 mmol), and N,N-dimethylformamide (0.5 mL) in toluene (1.0 mL) for 20 min. Pd(OAc)2 (0.002 g, 0.006 mmol) and tri(o-tolyl)phosphine (0.007 g, 0.021 mmol) are added and nitrogen bubbled through the reaction mixture for 10 min. The mixture is heated to 80° C. for 24 h. An additional portion of Pd(OAc)2 (0.002 g, 0.006 mmol) and tri(o-tolyl)phosphine (0.007 g, 0.021 mmol) is added and heating continues for another 24 h. The reaction is cooled and concentrated in vacuo and the residue chromatographed on SiO2 (2% methanol in methylene choloride) to yield the title compound, 0.49 g (97%), as a yellowish solid.

Workup

  1. customnitrogen bubbled through the reaction mixture for 10 min
  2. temperatureheating
  3. temperatureThe reaction is cooled
  4. concentrationconcentrated in vacuo
  5. customthe residue chromatographed on SiO2 (2% methanol in methylene choloride)

Sources & evidence

ORD record
ord-e7e385e0055b4b74a462f5b25feca342
Source dataset
uspto-grants-2006_08
Patent number
US07087626B2

Linked notes

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