Trifluoroacetic acid → HCID 57756221, compound

HRID 227783Notes

Reaction equation

HRID 227783 reaction equation
Cl[C:2]1[N:7]=[N:6][C:5]([NH:8][C:9]2[CH:14]=[CH:13][C:12]([O:15][C:16]3[C:21]([C:22]4[CH:27]=[CH:26][N:25]=[C:24]([NH:28][CH3:29])[N:23]=4)=[CH:20][CH:19]=[CH:18][N:17]=3)=[CH:11][CH:10]=2)=[C:4]2[CH2:30][CH2:31][CH2:32][C:3]=12.[NH:33]1[CH2:38][CH2:37][CH2:36][CH2:35][CH2:34]1.C(O)(C(F)(F)F)=O>CC(O)CC.[OH-].[Na+].O.CCOC(C)=O>[CH3:29][NH:28][C:24]1[N:23]=[C:22]([C:21]2[C:16]([O:15][C:12]3[CH:13]=[CH:14][C:9]([NH:8][C:5]4[N:6]=[N:7][C:2]([N:33]5[CH2:38][CH2:37][CH2:36][CH2:35][CH2:34]5)=[C:3]5[CH2:32][CH2:31][CH2:30][C:4]=45)=[CH:10][CH:11]=3)=[N:17][CH:18]=[CH:19][CH:20]=2)[CH:27]=[CH:26][N:25]=1

Participants

8

Reactant 3

HCID 6422Trifluoroacetic acidHCID 8082PiperidineHCID 86614165HCID 86614165, compound

Product 1

HCID 57756221HCID 57756221, compound

Reagents, catalysts & solvents 4

HCID 962WaterSolventHCID 6568(+-)-2-ButanolSolventHCID 8857Ethyl AcetateSolventHCID 14798Sodium HydroxideSolvent

Conditions

Temperature
125 °C

Procedure

To a mixture of 4-chloro-N-(4-(3-(2-(methylamino)pyrimidin-4-yl)pyridin-2-yloxy)phenyl)-6,7-dihydro-5H-cyclopenta[d]pyridazin-1-amine (0.200 g, 0.449 mmol) and piperidine (0.310 ml, 3.14 mmol) in 2 mL 2-butanol was added TFA (0.173 ml, 2.24 mmol). The reaction became slightly homogeneous and then solid. The solid was heated to 125° C. for 24 h, showing a small amount of conversion. The reaction was heated to 135° C. for 3 days. The brown, homogeneous reaction was allowed to cool, and was diluted with 2N NaOH, water, and EtOAc. The organic layer was dried over anhydrous sodium sulfate, filtered, and concentrated. The resulting solid was adsorbed onto 2 g silica gel and purified by chromatography (0-100% 90/10 DCM/MeOH in DCM) to give N-(4-(3-(2-(methylamino)pyrimidin-4-yl)pyridin-2-yloxy)phenyl)-4-(piperidin-1-yl)-6,7-dihydro-5H-cyclopenta[d]pyridazin-1-amine as an off-white solid. MS m/z=495 [M+H]+. Calc'd for C28H30N8O: 494.6.

Workup

  1. temperatureThe reaction was heated to 135° C. for 3 days
  2. customThe brown, homogeneous reaction
  3. temperatureto cool
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. custompurified by chromatography (0-100% 90/10 DCM/MeOH in DCM)

Sources & evidence

ORD record
ord-cc49bf805d2543e98f289d88780ec993
Source dataset
uspto-grants-2009_07
Patent number
US07560551B2

Reaction notes

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