1,4-Dioxane → HCID 57410847, compound

HRID 468752Notes

Reaction equation

HRID 468752 reaction equation
Br[C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[C:7]([NH:12][C:13]([CH:15]3[CH2:17][CH2:16]3)=[O:14])[N:8]=[CH:9]2)=[CH:4][CH:3]=1.O1CCOCC1.C([Sn](CCCC)(CCCC)[C:29]1[CH:34]=[N:33][CH:32]=[CH:31][N:30]=1)CCC>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.C(OCC)(=O)C>[N:30]1[CH:31]=[CH:32][N:33]=[CH:34][C:29]=1[C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[C:7]([NH:12][C:13]([CH:15]3[CH2:17][CH2:16]3)=[O:14])[N:8]=[CH:9]2)=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 312751,4-DioxaneHCID 27373162-(Tributylstannyl)pyrazineHCID 67974626N-(7-bromoisoquinolin-3-yl)cyclopropanecarboxamide

Product 1

HCID 57410847HCID 57410847, compoundYield 55%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolvent

Procedure

To a mixture of N-(7-bromoisoquinolin-3-yl)cyclopropanecarboxamide 1 (42.8 mg, 0.147 mmol) and 1,4-Dioxane (1.5 mL, 19 mmol) was added 2-(tributylstannyl)pyrazine (51.0 uL, 0.162 mmol) and tetrakis(triphenylphosphine)palladium(0) (14.0 mg, 0.0121 mmol). The reaction mixture was subjected to microwave irradiation at 130° C. for 30 minutes. The reaction mixture is poured into ethyl acetate and washed with dilute NH4OH. The organic layer was dried over MgSO4, filtered, and evaporated in vacuo. The crude product was purified via reverse phase HPLC and lyophilized to yield 23.4 mg (55%) of N-(7-(pyrazin-2-yl)isoquinolin-3-yl)cyclopropanecarboxamide. LCMS (ESI): RT=4.106, M+H=291.0, method=E; 1H NMR (400 MHz, DMSO-d6) δ 10.96 (s, 1H), 9.42 (s, 1H), 9.27 (s, 1H), 8.87 (s, 1H), 8.78 (s, 1H), 8.66 (s, 1H), 8.51 (s, 1H), 8.45 (d, J=8.6 Hz, 1H), 8.01 (d, J=8.7 Hz, 1H), 2.10 (s, 1H), 0.94-0.74 (m, 4H).

Workup

  1. customirradiation at 130° C. for 30 minutes
  2. washwashed with dilute NH4OH
  3. dry with materialThe organic layer was dried over MgSO4
  4. filtrationfiltered
  5. customevaporated in vacuo
  6. customThe crude product was purified via reverse phase HPLC

Sources & evidence

ORD record
ord-b3a9e2aa95674c3f88df0840dcf1ea4a
Source dataset
uspto-grants-2014_01
Patent number
US08623889B2

Reaction notes

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