2-Aminopyridine → (2'-(7,7-dimethyl-1-oxo-3,4,7,8-tetrahydro-1H-cyclopenta[4,5]pyrrolo[1,2-a]pyrazin-2(6H)-yl)-1-methyl-6-oxo-5-(pyridin-2-ylamino)-1,6-dihydro-[3,4'-bipyridin]-3'-yl)methyl acetate

HRID 593044Notes

Reaction equation

HRID 593044 reaction equation
[C:1]([O:4][CH2:5][C:6]1[C:7]([N:21]2[CH2:32][CH2:31][N:30]3[C:23](=[CH:24][C:25]4[CH2:26][C:27]([CH3:34])([CH3:33])[CH2:28][C:29]=43)[C:22]2=[O:35])=[N:8][CH:9]=[CH:10][C:11]=1[C:12]1[CH:17]=[C:16](Br)[C:15](=[O:19])[N:14]([CH3:20])[CH:13]=1)(=[O:3])[CH3:2].[NH2:36][C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][N:38]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2>O1CCOCC1.ClCCl.[Pd].[Pd].C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1.C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1.C(=CC(C=CC1C=CC=CC=1)=O)C1C=CC=CC=1>[C:1]([O:4][CH2:5][C:6]1[C:7]([N:21]2[CH2:32][CH2:31][N:30]3[C:29]4[CH2:28][C:27]([CH3:34])([CH3:33])[CH2:26][C:25]=4[CH:24]=[C:23]3[C:22]2=[O:35])=[N:8][CH:9]=[CH:10][C:11]=1[C:12]1[CH:17]=[C:16]([NH:36][C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][N:38]=2)[C:15](=[O:19])[N:14]([CH3:20])[CH:13]=1)(=[O:3])[CH3:2]

Participants

8

Reactant 4

HCID 104392-AminopyridineHCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 86684396[4-(5-Bromo-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-2-{4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}pyridin-3-yl]methyl Acetate

Product 1

HCID 86684515(2'-(7,7-dimethyl-1-oxo-3,4,7,8-tetrahydro-1H-cyclopenta[4,5]pyrrolo[1,2-a]pyrazin-2(6H)-yl)-1-methyl-6-oxo-5-(pyridin-2-ylamino)-1,6-dihydro-[3,4'-bipyridin]-3'-yl)methyl acetate

Reagents, catalysts & solvents 3

HCID 9832798Tris(dibenzylideneacetone) dipalladiumCatalystHCID 6344DichloromethaneSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

Into a 1-dram vial was added 273a (40 mg, 0.074 mmol), 2-aminopyridine, (1.2 equiv), cesium carbonate (1.5 equiv), Xantphos (10 mol %) and tris(dibenzylideneacetone) dipalladium(0) (5 mol %) in dry 1,4-dioxane (0.2 M). The reaction was then stirred at 80° C. for 3 hours. After cooling to room temperature, the reaction was then diluted with dichloromethane (3 mL) and washed with water (2×3 mL). The organic layer was dried over magnesium sulfate, filtered and concentrated in vacuo. The crude product 273b was then carried on to the subsequent step without purification.

Workup

  1. temperatureAfter cooling to room temperature
  2. washwashed with water (2×3 mL)
  3. dry with materialThe organic layer was dried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe crude product 273b was then carried on to the subsequent step without purification

Sources & evidence

ORD record
ord-37eb56c99bed4954aec3252f9238727d
Source dataset
uspto-grants-2016_01
Patent number
US09238655B2

Reaction notes

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