Potassium Carbonate → (R)-2-(5-cyano-6-(3-methylisothiazol-5-ylamino)pyrazin-2-ylamino)-4-methylpentanamide

HRID 332768Notes

Reaction equation

HRID 332768 reaction equation
Cl[C:2]1[N:7]=[C:6]([NH:8][C@H:9]([CH2:13][CH:14]([CH3:16])[CH3:15])[C:10]([NH2:12])=[O:11])[CH:5]=[N:4][C:3]=1[C:17]#[N:18].Cl.[CH3:20][C:21]1[CH:25]=[C:24]([NH2:26])[S:23][N:22]=1.C([O-])([O-])=O.[K+].[K+].C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1>O1CCOCC1.CC([O-])=O.CC([O-])=O.[Pd+2]>[C:17]([C:3]1[N:4]=[CH:5][C:6]([NH:8][C@H:9]([CH2:13][CH:14]([CH3:16])[CH3:15])[C:10]([NH2:12])=[O:11])=[N:7][C:2]=1[NH:26][C:24]1[S:23][N:22]=[C:21]([CH3:20])[CH:25]=1)#[N:18]

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 634876Binap, (A+-)-HCID 27239183-Methylisothiazol-5-ylamine hydrochlorideHCID 86685528(R)-2-(6-chloro-5-cyanopyrazin-2-ylamino)-4-methylpentanamide

Product 1

HCID 86685572(R)-2-(5-cyano-6-(3-methylisothiazol-5-ylamino)pyrazin-2-ylamino)-4-methylpentanamideYield 17.6%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 312751,4-DioxaneSolvent

Procedure

A mixture of (R)-2-(6-chloro-5-cyanopyrazin-2-ylamino)-4-methylpentanamide (75 mg, 0.280 mmol), 3-methylisothiazol-5-amine hydrochloride (50 mg, 0.332 mmol), K2CO3 (100 mg, 0.724 mmol), BINAP (25 mg, 0.040 mmol) and Pd(OAc)2 (15 mg, 0.066 mmol) in dioxane (3 mL) was degassed with Ar, then was stirred at 110 C for 20 h. The mixture was concentrated in vacuo. The residue was purified by HPLC to give (R)-2-(5-cyano-6-(3-methylisothiazol-5-ylamino)pyrazin-2-ylamino)-4-methylpentanamide (17 mg).

Workup

  1. customwas degassed with Ar
  2. concentrationThe mixture was concentrated in vacuo
  3. customThe residue was purified by HPLC

Sources & evidence

ORD record
ord-e20c61da0e084c6bb3e3942fbb15e48e
Source dataset
uspto-grants-2014_11
Patent number
US08877760B2

Reaction notes

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