Cesium carbonate → Tert-butyl 4-(2-chloro-5-cyano-3-((7-cyano-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazin-2-yl)amino)phenyl)-3-oxopiperazine-1-carboxylate

HRID 921874Notes

Reaction equation

HRID 921874 reaction equation
Cl[C:2]1[N:7]=[C:6]([N:8]([CH:18]2[CH2:20][CH2:19]2)[CH2:9][C:10]2[CH:15]=[CH:14][C:13]([O:16][CH3:17])=[CH:12][CH:11]=2)[C:5]2=[N:21][CH:22]=[C:23]([C:24]#[N:25])[N:4]2[N:3]=1.[NH2:26][C:27]1[C:28]([Cl:49])=[C:29]([N:35]2[CH2:40][CH2:39][N:38]([C:41]([O:43][C:44]([CH3:47])([CH3:46])[CH3:45])=[O:42])[CH2:37][C:36]2=[O:48])[CH:30]=[C:31]([C:33]#[N:34])[CH:32]=1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.[Fe+2]>[Cl:49][C:28]1[C:27]([NH:26][C:2]2[N:7]=[C:6]([N:8]([CH:18]3[CH2:19][CH2:20]3)[CH2:9][C:10]3[CH:15]=[CH:14][C:13]([O:16][CH3:17])=[CH:12][CH:11]=3)[C:5]3=[N:21][CH:22]=[C:23]([C:24]#[N:25])[N:4]3[N:3]=2)=[CH:32][C:31]([C:33]#[N:34])=[CH:30][C:29]=1[N:35]1[CH2:40][CH2:39][N:38]([C:41]([O:43][C:44]([CH3:46])([CH3:45])[CH3:47])=[O:42])[CH2:37][C:36]1=[O:48]

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 867084772-Chloro-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrileHCID 89922751HCID 89922751, compound

Product 1

HCID 89923358Tert-butyl 4-(2-chloro-5-cyano-3-((7-cyano-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazin-2-yl)amino)phenyl)-3-oxopiperazine-1-carboxylateYield 74.3%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)CatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of 2-chloro-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile (72.8 mg, 0.205 mmol), tert-butyl 4-(3-amino-2-chloro-5-cyanophenyl)-3-oxopiperazine-1-carboxylate (60 mg, 0.171 mmol), palladium(II) acetate (12 mg, 0.053 mmol), XANTPHOS (12 mg, 0.021 mmol), DPPF (12 mg, 0.022 mmol) and cesium carbonate (145 mg, 0.445 mmol) in Dioxane (2 mL) was evacuated and back filled with nitrogen three time and was heated at 80° C. for 3 h. LC-MS showed reaction was complete. The reaction mixture was filtered through a pad of Celite, rinsed with EtOAc, DCM and the filtrate was concentrated and purification via flash chromatography (0-10% MeOH in DCM, 12 g) gave tert-butyl 4-(2-chloro-5-cyano-3-((7-cyano-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazin-2-yl)amino)phenyl)-3-oxopiperazine-1-carboxylate (85 mg) as a yellow oil.

Workup

  1. customwas evacuated
  2. additionback filled with nitrogen three time
  3. customreaction
  4. filtrationThe reaction mixture was filtered through a pad of Celite
  5. washrinsed with EtOAc, DCM
  6. concentrationthe filtrate was concentrated
  7. custompurification via flash chromatography (0-10% MeOH in DCM, 12 g)

Sources & evidence

ORD record
ord-796261b61e6c476c8337163605215709
Source dataset
uspto-grants-2016_03
Patent number
US09273057B2

Reaction notes

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