Diisopropylethylamine → 2-((2-Chloro-5-cyano-3-(4-(2,2-difluoroethyl)piperazin-1-yl)phenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile

HRID 1430806Notes

Reaction equation

HRID 1430806 reaction equation
[Cl:1][C:2]1[C:7]([N:8]2[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]2)=[CH:6][C:5]([C:14]#[N:15])=[CH:4][C:3]=1[NH:16][C:17]1[N:22]=[C:21]([N:23]([CH:33]2[CH2:35][CH2:34]2)[CH2:24][C:25]2[CH:30]=[CH:29][C:28]([O:31][CH3:32])=[CH:27][CH:26]=2)[C:20]2=[N:36][CH:37]=[C:38]([C:39]#[N:40])[N:19]2[N:18]=1.C(N(CC)C(C)C)(C)C.FC(F)(F)S(O[CH2:56][CH:57]([F:59])[F:58])(=O)=O>CN(C=O)C.C(OCC)(=O)C>[Cl:1][C:2]1[C:7]([N:8]2[CH2:13][CH2:12][N:11]([CH2:56][CH:57]([F:59])[F:58])[CH2:10][CH2:9]2)=[CH:6][C:5]([C:14]#[N:15])=[CH:4][C:3]=1[NH:16][C:17]1[N:22]=[C:21]([N:23]([CH:33]2[CH2:34][CH2:35]2)[CH2:24][C:25]2[CH:30]=[CH:29][C:28]([O:31][CH3:32])=[CH:27][CH:26]=2)[C:20]2=[N:36][CH:37]=[C:38]([C:39]#[N:40])[N:19]2[N:18]=1

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 27740892,2-Difluoroethyl trifluoromethanesulfonateHCID 867084922-((2-Chloro-5-cyano-3-(piperazin-1-yl)phenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile2×

Product 1

HCID 867084912-((2-Chloro-5-cyano-3-(4-(2,2-difluoroethyl)piperazin-1-yl)phenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrileYield 89.7%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To the stirred solution of 2-((2-chloro-5-cyano-3-(piperazin-1-yl)phenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile (Intermediate 11) (0.100 g, 0.180 mmol) in DMF (2.0 mL) and N,N-diisopropylethylamine, (63 μL, 0.361 mmol) was added 2,2-difluoroethyl trifluoromethanesulfonate (0.046 g, 0.216 mmol) at room temperature. The reaction mixture was stirred at room temperature for overnight. On completion of the reaction, the reaction mixture was diluted with ethyl acetate and washed with water. The organic layer was separated and aqueous layer was extracted with ethyl acetate twice. The combined organic layers were dried over sodium sulfate, filtered and concentrated in vacuum to give off-white solid, which was purified by flash chromatography on silica gel using an automated ISCO system (12 g Redisep column, eluting with 0-5% methanol/chloroform) to get 2-((2-chloro-5-cyano-3-(4-(2,2-difluoroethyl)piperazin-1-yl)phenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile (100 mg) as an off-white solid.

Workup

  1. customOn completion of the reaction
  2. washwashed with water
  3. customThe organic layer was separated
  4. extractionaqueous layer was extracted with ethyl acetate twice
  5. dry with materialThe combined organic layers were dried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuum
  8. customto give off-white solid, which
  9. customwas purified by flash chromatography on silica gel using
  10. washan automated ISCO system (12 g Redisep column, eluting with 0-5% methanol/chloroform)

Sources & evidence

ORD record
ord-44c1cc2dad8e4d0b86b5e06c02048865
Source dataset
uspto-grants-2015_01
Patent number
US08940736B2

Reaction notes

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