Potassium Carbonate → (R)-2-(5-cyano-6-(3-phenylisothiazol-5-ylamino)pyrazin-2-ylamino)butanamide

HRID 332831Notes

Reaction equation

HRID 332831 reaction equation
Cl[C:2]1[N:7]=[C:6]([NH:8][C@H:9]([CH2:13][CH3:14])[C:10]([NH2:12])=[O:11])[CH:5]=[N:4][C:3]=1[C:15]#[N:16].[C:17]1([C:23]2[CH:27]=[C:26]([NH2:28])[S:25][N:24]=2)[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=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:15]([C:3]1[N:4]=[CH:5][C:6]([NH:8][C@H:9]([CH2:13][CH3:14])[C:10]([NH2:12])=[O:11])=[N:7][C:2]=1[NH:28][C:26]1[S:25][N:24]=[C:23]([C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH:27]=1)#[N:16]

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 634876Binap, (A+-)-HCID 126038793-Phenyl-1,2-thiazol-5-amineHCID 86685581(R)-2-(6-chloro-5-cyanopyrazin-2-ylamino)butanamide

Product 1

HCID 86685621(R)-2-(5-cyano-6-(3-phenylisothiazol-5-ylamino)pyrazin-2-ylamino)butanamideYield 16.9%

Reagents, catalysts & solvents 2

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

Procedure

A mixture of (R)-2-(6-chloro-5-cyanopyrazin-2-ylamino)butanamide (50 mg, 0.208 mmol), 3-phenylisothiazol-5-amine (22 mg, 0.125 mmol), K2CO3 (100 mg, 0.724 mmol), BINAP (25 mg, 0.040 mmol) and Pd(OAc)2 (15 mg, 0.066 mmol) in dioxane (2 mL) was degassed with Ar, then was stirred at 110 C for 4 h. HOAc (0.2 mL) was added. The mixture was concentrated in vacuo. The residue was purified by HPLC to give (R)-2-(5-cyano-6-(3-phenylisothiazol-5-ylamino)pyrazin-2-ylamino)butanamide (8 mg)

Workup

  1. customwas degassed with Ar
  2. additionHOAc (0.2 mL) was added
  3. concentrationThe mixture was concentrated in vacuo
  4. customThe residue was purified by HPLC

Sources & evidence

ORD record
ord-65b89b993db9462da8ef36680d56d38d
Source dataset
uspto-grants-2014_11
Patent number
US08877760B2

Reaction notes

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