Potassium Carbonate → 5-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)-3-(3-methylisothiazol-5-ylamino)pyrazine-2-carbonitrile

HRID 2200445Notes

Reaction equation

HRID 2200445 reaction equation
[NH2:1][C@H:2]1[C:7]([F:9])([F:8])[CH2:6][CH2:5][CH2:4][C@H:3]1[NH:10][C:11]1[N:12]=[C:13](Cl)[C:14]([C:17]#[N:18])=[N:15][CH:16]=1.Cl.[CH3:21][C:22]1[CH:26]=[C:25]([NH2:27])[S:24][N:23]=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]>[NH2:1][C@H:2]1[C:7]([F:9])([F:8])[CH2:6][CH2:5][CH2:4][C@H:3]1[NH:10][C:11]1[N:12]=[C:13]([NH:27][C:25]2[S:24][N:23]=[C:22]([CH3:21])[CH:26]=2)[C:14]([C:17]#[N:18])=[N:15][CH:16]=1

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 634876Binap, (A+-)-HCID 27239183-Methylisothiazol-5-ylamine hydrochlorideHCID 866855565-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)-3-chloropyrazine-2-carbonitrile

Product 1

HCID 866855735-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)-3-(3-methylisothiazol-5-ylamino)pyrazine-2-carbonitrileYield 85.2%

Reagents, catalysts & solvents 2

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

Procedure

A mixture of 5-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)-3-chloropyrazine-2-carbonitrile (74 mg, 0.257 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 (10 mg, 0.044 mmol) in dioxane (2 mL) was degassed with Ar, then was stirred at 110 C for 5 h. The mixture was concentrated in vacuo. The residue was purified by HPLC to give 5-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)-3-(3-methylisothiazol-5-ylamino)pyrazine-2-carbonitrile (80 mg). The compound 5-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)-3-(3-methylisothiazol-5-ylamino)pyrazine-2-carbonitrile (80 mg, 0.219 mmol) was dissolved in EtOH (2 mL) and DMSO (1 mL), aq. 1N NaOH (1.0 mL) and aq. H2O2 (30%, 1.0 mL) were added. The mixture was stirred at room temperature for 30 min. HOAc (0.5 mL) was added. The mixture was then concentrated in vacuo. The residue was purified by HPLC to give the titled compound (44 mg). MS 384.2 (M+H); UV 209.0, 270.7, 321.3 nm; t 0.362 min.

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-113840a517654b7c92fc901a4031de26
Source dataset
uspto-grants-2016_06
Patent number
US09359308B2

Reaction notes

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