Cesium carbonate → 2-((3-(4-((Tert-butyldimethylsilyl)oxy)piperidin-1-yl)-2-chloro-5-cyanophenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile

HRID 921628Notes

Reaction equation

HRID 921628 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[CH:28]=[C:29]([CH:32]=[C:33]([N:36]2[CH2:41][CH2:40][CH:39]([O:42][Si:43]([C:46]([CH3:49])([CH3:48])[CH3:47])([CH3:45])[CH3:44])[CH2:38][CH2:37]2)[C:34]=1[Cl:35])[C:30]#[N:31].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+]>CC([O-])=O.CC([O-])=O.[Pd+2].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].O1CCOCC1>[Si:43]([O:42][CH:39]1[CH2:38][CH2:37][N:36]([C:33]2[C:34]([Cl:35])=[C:27]([NH:26][C:2]3[N:7]=[C:6]([N:8]([CH:18]4[CH2:20][CH2:19]4)[CH2:9][C:10]4[CH:15]=[CH:14][C:13]([O:16][CH3:17])=[CH:12][CH:11]=4)[C:5]4=[N:21][CH:22]=[C:23]([C:24]#[N:25])[N:4]4[N:3]=3)[CH:28]=[C:29]([C:30]#[N:31])[CH:32]=2)[CH2:41][CH2:40]1)([C:46]([CH3:49])([CH3:48])[CH3:47])([CH3:44])[CH3:45]

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-carbonitrile2×HCID 867084823-Amino-5-(4-((tert-butyldimethylsilyl)oxy)piperidin-1-yl)-4-chlorobenzonitrile

Product 1

HCID 867084842-((3-(4-((Tert-butyldimethylsilyl)oxy)piperidin-1-yl)-2-chloro-5-cyanophenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrileYield 74.7%

Reagents, catalysts & solvents 3

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

Conditions

Temperature
100 °C

Procedure

(I13C): 2-Chloro-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile (Intermediate 1) (0.646 g, 1.820 mmol), 3-amino-5-(4-((tert-butyldimethylsilyl)oxy)piperidin-1-yl)-4-chlorobenzonitrile (I13B) (0.666 g, 1.820 mmol), Pd(OAc)2 (0.123 g, 0.546 mmol), DPPF (0.101 g, 0.182 mmol), Xantphos (0.105 g, 0.182 mmol), and cesium carbonate (1.186 g, 3.64 mmol) were combined in a round bottom flask and dioxane (12.13 ml) was added. The flask was evacuated and backfilled with nitrogen (3×), then heated at 100° C. 10 h. The reaction mixture was diluted with ethyl acetate and vacuum filtered through a pad of Celite. The filtrate was concentrated in vacuo and the crude material purified by column chromatography on the ISCO system (40 g, 0-100% EtOAc/Hex). 2-((3-(4-((tert-Butyldimethylsilyl)oxy)piperidin-1-yl)-2-chloro-5-cyanophenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile (0.9309 g) was isolated as a dark yellow solid.

Workup

  1. customThe flask was evacuated
  2. custom10 h
  3. additionThe reaction mixture was diluted with ethyl acetate and vacuum
  4. filtrationfiltered through a pad of Celite
  5. concentrationThe filtrate was concentrated in vacuo
  6. customthe crude material purified by column chromatography on the ISCO system (40 g, 0-100% EtOAc/Hex)

Sources & evidence

ORD record
ord-43a008a7b3f040ffbea5cabaee1442cd
Source dataset
uspto-grants-2016_03
Patent number
US09273057B2

Reaction notes

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