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Diisopropylethylamine → (S)-N-(5-(4-chlorophenyl)-6-(1,1,1-trifluoropropan-2-yloxy)pyridin-3-yl)pyridazine-3-carboxamide

HRID 1958148
Notes
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Reaction equation

HRID 1958148 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:7]([OH:9])=O)[N:2]=1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.C(N(C(C)C)C(C)C)C.[Cl:41][C:42]1[CH:47]=[CH:46][C:45]([C:48]2[CH:49]=[C:50]([NH2:61])[CH:51]=[N:52][C:53]=2[O:54][C@@H:55]([CH3:60])[C:56]([F:59])([F:58])[F:57])=[CH:44][CH:43]=1>CN(C=O)C>[Cl:41][C:42]1[CH:43]=[CH:44][C:45]([C:48]2[CH:49]=[C:50]([NH:61][C:7]([C:3]3[N:2]=[N:1][CH:6]=[CH:5][CH:4]=3)=[O:9])[CH:51]=[N:52][C:53]=2[O:54][C@@H:55]([CH3:60])[C:56]([F:57])([F:58])[F:59])=[CH:46][CH:47]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 269369Pyridazine-3-carboxylic acidHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 672815945-(4-Chloro-phenyl)-6-((S)-2,2,2-trifluoro-1-methyl-ethoxy)-pyridin-3-ylamine

Product 1

HCID 56961335(S)-N-(5-(4-chlorophenyl)-6-(1,1,1-trifluoropropan-2-yloxy)pyridin-3-yl)pyridazine-3-carboxamide
Yield 83%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Pyridazine-3-carboxylic acid (CAN 2164-61-6; 43.1 mg, 347 μmol) was suspended in DMF (1.0 mL). TBTU (112 mg, 347 μmol), ethyldiisopropylamine (102 mg, 131 μl, 789 μmol,) and 5-(4-chloro-phenyl)-6-((S)-2,2,2-trifluoro-1-methyl-ethoxy)-pyridin-3-ylamine (0.100 g, 316 μmol) were added and the reaction mixture was stirred at room temperature for 1 h. The rection mixture was extracted with ethyl acetate and 1M citric acid solution; the organic phase was dried with MgSO4 and concentrated in vacuo. The crude material was purified by flash chromatography (silica gel, 10 g, 10% to 50% ethyl acetate in heptane) to give 0.11 g (83%) of the title compound as white solid; MS (EI) 423.1 (M+H)+.

Workup

  1. extractionThe rection mixture was extracted with ethyl acetate and 1M citric acid solution
  2. dry with materialthe organic phase was dried with MgSO4
  3. concentrationconcentrated in vacuo
  4. customThe crude material was purified by flash chromatography (silica gel, 10 g, 10% to 50% ethyl acetate in heptane)

Sources & evidence

ORD record
ord-b31475174256454ca03c72527d637cbb
Source dataset
uspto-grants-2013_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08410107B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes