Potassium Carbonate → tert-butyl (1S,2R)-2-(5-cyano-6-(4-cyanophenylamino)pyrazin-2-ylamino)cyclohexylcarbamate

HRID 332748Notes

Reaction equation

HRID 332748 reaction equation
Cl[C:2]1[N:7]=[C:6]([NH:8][C@@H:9]2[CH2:14][CH2:13][CH2:12][CH2:11][C@@H:10]2[NH:15][C:16](=[O:22])[O:17][C:18]([CH3:21])([CH3:20])[CH3:19])[CH:5]=[N:4][C:3]=1[C:23]#[N:24].[NH2:25][C:26]1[CH:33]=[CH:32][C:29]([C:30]#[N:31])=[CH:28][CH:27]=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:23]([C:3]1[N:4]=[CH:5][C:6]([NH:8][C@@H:9]2[CH2:14][CH2:13][CH2:12][CH2:11][C@@H:10]2[NH:15][C:16](=[O:22])[O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[N:7][C:2]=1[NH:25][C:26]1[CH:33]=[CH:32][C:29]([C:30]#[N:31])=[CH:28][CH:27]=1)#[N:24]

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 133964-AminobenzonitrileHCID 634876Binap, (A+-)-HCID 86685544tert-butyl (1S,2R)-2-(6-chloro-5-cyanopyrazin-2-ylamino)cyclohexylcarbamate

Product 1

HCID 86685553tert-butyl (1S,2R)-2-(5-cyano-6-(4-cyanophenylamino)pyrazin-2-ylamino)cyclohexylcarbamateYield 149.6%

Reagents, catalysts & solvents 2

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

Procedure

A mixture of tert-butyl (1S,2R)-2-(6-chloro-5-cyanopyrazin-2-ylamino)cyclohexylcarbamate (90 mg, 0.256 mmol), 4-aminobenzonitrile (42 mg, 0.355 mmol), K2CO3 (100 mg, 0.724 mmol), BINAP (30 mg, 0.048 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 20 h. Water and EtOAc were added. Organic phase was separated, dried over Na2SO4, concentrated in vacuo to give a crude tert-butyl (1S,2R)-2-(5-cyano-6-(4-cyanophenylamino)pyrazin-2-ylamino)cyclohexylcarbamate (166 mg).

Workup

  1. customwas degassed with Ar
  2. additionWater and EtOAc were added
  3. customOrganic phase was separated
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-ae1b1ba8e9e54098853a9868a5c9d0f8
Source dataset
uspto-grants-2014_11
Patent number
US08877760B2

Reaction notes

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