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

HRID 921875Notes

Reaction equation

HRID 921875 reaction equation
C(O)(C(F)(F)F)=O.[Cl:8][C:9]1[C:14]([NH:15][C:16]2[N:21]=[C:20]([N:22]([CH:32]3[CH2:34][CH2:33]3)[CH2:23][C:24]3[CH:29]=[CH:28][C:27]([O:30][CH3:31])=[CH:26][CH:25]=3)[C:19]3=[N:35][CH:36]=[C:37]([C:38]#[N:39])[N:18]3[N:17]=2)=[CH:13][C:12]([C:40]#[N:41])=[CH:11][C:10]=1[N:42]1[CH2:47][CH2:46][N:45](C(OC(C)(C)C)=O)[CH2:44][C:43]1=[O:55]>C(Cl)Cl>[Cl:8][C:9]1[C:10]([N:42]2[CH2:47][CH2:46][NH:45][CH2:44][C:43]2=[O:55])=[CH:11][C:12]([C:40]#[N:41])=[CH:13][C:14]=1[NH:15][C:16]1[N:21]=[C:20]([N:22]([CH:32]2[CH2:33][CH2:34]2)[CH2:23][C:24]2[CH:29]=[CH:28][C:27]([O:30][CH3:31])=[CH:26][CH:25]=2)[C:19]2=[N:35][CH:36]=[C:37]([C:38]#[N:39])[N:18]2[N:17]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 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-carboxylate

Product 1

HCID 899226992-((2-Chloro-5-cyano-3-(2-oxopiperazin-1-yl)phenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrileYield 69.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

TFA (2 mL) was added to a solution of 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, 0.127 mmol) in DCM (4 mL) and the reaction mixture was stirred at room temperature for 1 h. Solvent was evaporated and the crude was dried under vacuum for 10 min. The crude was dissolved in MeOH and neutralized with 7N ammonia in methanol. After stirring for 10 min it was concentrated and purification via flash chromatography (0-10% MeOH in DCM, 12 g) gave 2-((2-chloro-5-cyano-3-(2-oxopiperazin-1-yl)phenyl)amino)-4-(cyclopropyl(4-methoxybenzyl)amino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile (50 mg) as a light yellow oil.

Workup

  1. customSolvent was evaporated
  2. customthe crude was dried under vacuum for 10 min
  3. dissolutionThe crude was dissolved in MeOH and neutralized with 7N ammonia in methanol
  4. stirringAfter stirring for 10 min it
  5. concentrationwas concentrated
  6. custompurification via flash chromatography (0-10% MeOH in DCM, 12 g)

Sources & evidence

ORD record
ord-ac441fc9c6484885b870808ec8e6575d
Source dataset
uspto-grants-2016_03
Patent number
US09273057B2

Reaction notes

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