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Diisopropylethylamine → 1-[4-(4-Chloro-3-trifluoromethyl-phenyl)-piperazin-1-yl]-2-[3-(1H-imidazol-2-yl)-pyrazolo[3,4-b]pyridin-1-yl]-ethanone

HRID 1866584
Notes
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Reaction equation

HRID 1866584 reaction equation
[NH:1]1[CH:5]=[CH:4][N:3]=[C:2]1[C:6]1[C:14]2[C:9](=[N:10][CH:11]=[CH:12][CH:13]=2)[N:8]([CH2:15][C:16]([OH:18])=O)[N:7]=1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.Cl.Cl.[Cl:45][C:46]1[CH:51]=[CH:50][C:49]([N:52]2[CH2:57][CH2:56][NH:55][CH2:54][CH2:53]2)=[CH:48][C:47]=1[C:58]([F:61])([F:60])[F:59].CCN(C(C)C)C(C)C>CN(C=O)C>[Cl:45][C:46]1[CH:51]=[CH:50][C:49]([N:52]2[CH2:57][CH2:56][N:55]([C:16](=[O:18])[CH2:15][N:8]3[C:9]4=[N:10][CH:11]=[CH:12][CH:13]=[C:14]4[C:6]([C:2]4[NH:1][CH:5]=[CH:4][N:3]=4)=[N:7]3)[CH2:54][CH2:53]2)=[CH:48][C:47]=1[C:58]([F:60])([F:59])[F:61]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 866189211-(4-Chloro-3-trifluoromethyl-phenyl)-piperazine dihydrochlorideHCID 1361746462-(3-(1H-imidazol-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid

Product 1

HCID 135882254
1-[4-(4-Chloro-3-trifluoromethyl-phenyl)-piperazin-1-yl]-2-[3-(1H-imidazol-2-yl)-pyrazolo[3,4-b]pyridin-1-yl]-ethanone

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
45 °C

Procedure

A vial was charged with 2-(3-(1H-imidazol-2-yl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid (55 mg, 0.226 mmol), HBTU (125 mg, 0.33 mmol), 1-(4-Chloro-3-trifluoromethyl-phenyl)-piperazine dihydrochloride (170 mg, 0.50 mmol), anhydrous DMF (2.0 mL), and DIPEA (0.5 mL). The vial was capped, heated to 45° C., and stirred overnight. The following day, the volatiles were removed in vacuo and separation by preparative hplc (reverse phase, acetonitrile-water gradient) gave 1-[4-(4-Chloro-3-trifluoromethyl-phenyl)-piperazin-1-yl]-2-[3-(1H-imidazol-2-yl)-pyrazolo[3,4-b]pyridin-1-yl]-ethanone: MS (ES) [M+H]+ found: 490.4

Workup

  1. customThe vial was capped
  2. customThe following day, the volatiles were removed in vacuo and separation by preparative hplc (reverse phase, acetonitrile-water gradient)

Sources & evidence

ORD record
ord-e7326a7f59814733948382d54dc832fe
Source dataset
uspto-grants-2009_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07629344B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes