Lithium Chloride → 3-(1-(4-amino-3-(pyrazin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)-4-phenyl-1H-isochromen-1-one

HRID 634461Notes

Reaction equation

HRID 634461 reaction equation
[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH:12]([C:14]3[O:15][C:16](=[O:30])[C:17]4[C:22]([C:23]=3[C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)=[CH:21][CH:20]=[CH:19][CH:18]=4)[CH3:13])[N:9]=[C:10](I)[C:3]=12.C([Sn](CCCC)(CCCC)[C:36]1[CH:41]=[N:40][CH:39]=[CH:38][N:37]=1)CCC.[Li+].[Cl-]>O1CCOCC1.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>[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH:12]([C:14]3[O:15][C:16](=[O:30])[C:17]4[C:22]([C:23]=3[C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)=[CH:21][CH:20]=[CH:19][CH:18]=4)[CH3:13])[N:9]=[C:10]([C:36]3[CH:41]=[N:40][CH:39]=[CH:38][N:37]=3)[C:3]=12

Participants

6

Reactant 3

HCID 433294Lithium ChlorideHCID 27373162-(Tributylstannyl)pyrazineHCID 1181310533-(1-(4-Amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)-4-phenyl-1H-isochromen-1-one

Product 1

HCID 1181312833-(1-(4-amino-3-(pyrazin-2-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)-4-phenyl-1H-isochromen-1-oneYield 24.8%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

3-(1-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)-4-phenyl-1H-isochromen-1-one (Intermediate D2a, 60 mg, 0.118 mmol), 2-(tributylstannyl)pyrazine (0.072 mL, 0.236 mmol), Pd(PPh3)4, (13.61 mg, 0.012 mmol) and LiCl (4.99 mg, 0.118 mmol) were reacted in dioxane (1.2 mL), purged under argon and heated at 120° C. overnigth. The reaction was quenched by the addition of 1M HClaqueous (2 ml), and the solids collected by filtration. The solid crude was straightforward purified via reverse phase chromatography using a Biotage C18 30 g SNAP with a gradient of water and acetonitrile (prior to drying 5 mL of 2M HClaqueous was added). The resulting white solid was triturated in Et2O. to give (13.5 mg, 24.8%) the title compound.

Workup

  1. custompurged under argon
  2. customThe reaction was quenched by the addition of 1M HClaqueous (2 ml)
  3. filtrationthe solids collected by filtration
  4. customThe solid crude was straightforward purified via reverse phase chromatography
  5. customto drying 5 mL of 2M HClaqueous
  6. additionwas added)
  7. customThe resulting white solid was triturated in Et2O

Sources & evidence

ORD record
ord-57b79e03145942599a5af390dbae8701
Source dataset
uspto-grants-2016_04
Patent number
US09321776B2

Reaction notes

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