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Potassium Carbonate → tert-Butyl 4-{4-[4-(2-chloro-4-{[(2,4-dimethoxybenzyl)(1,3,4-thiadiazol-2-yl)amino]sulfonyl}-5-fluorophenoxy)-4'-(trifluoromethyl)biphenyl-3-yl]pyridin-2-yl}piperazine-1-carboxylate

HRID 1619714
Notes
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Reaction equation

HRID 1619714 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:13]=[CH:12][C:11]([C:14]([F:17])([F:16])[F:15])=[CH:10][CH:9]=2)=[CH:4][C:3]=1[C:18]1[CH:23]=[CH:22][N:21]=[C:20]([N:24]2[CH2:29][CH2:28][N:27]([C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[CH2:26][CH2:25]2)[CH:19]=1.C(=O)([O-])[O-].[K+].[K+].[Cl:43][C:44]1[C:45](F)=[CH:46][C:47]([F:70])=[C:48]([S:50]([N:53]([CH2:59][C:60]2[CH:65]=[CH:64][C:63]([O:66][CH3:67])=[CH:62][C:61]=2[O:68][CH3:69])[C:54]2[S:55][CH:56]=[N:57][N:58]=2)(=[O:52])=[O:51])[CH:49]=1>CS(C)=O>[Cl:43][C:44]1[CH:49]=[C:48]([S:50]([N:53]([CH2:59][C:60]2[CH:65]=[CH:64][C:63]([O:66][CH3:67])=[CH:62][C:61]=2[O:68][CH3:69])[C:54]2[S:55][CH:56]=[N:57][N:58]=2)(=[O:51])=[O:52])[C:47]([F:70])=[CH:46][C:45]=1[O:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[CH:9]=[CH:10][C:11]([C:14]([F:16])([F:17])[F:15])=[CH:12][CH:13]=2)=[CH:4][C:3]=1[C:18]1[CH:23]=[CH:22][N:21]=[C:20]([N:24]2[CH2:29][CH2:28][N:27]([C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[CH2:26][CH2:25]2)[CH:19]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 580422535-chloro-N-(2,4-dimethoxybenzyl)-2,4-difluoro-N-(1,3,4-thiadiazol-2-yl)benzenesulfonamideHCID 136200880Tert-butyl 4-(4-(4-hydroxy-4'-(trifluoromethyl)biphenyl-3-yl)pyridin-2-yl)piperazine-1-carboxylate

Product 1

HCID 58042246tert-Butyl 4-{4-[4-(2-chloro-4-{[(2,4-dimethoxybenzyl)(1,3,4-thiadiazol-2-yl)amino]sulfonyl}-5-fluorophenoxy)-4'-(trifluoromethyl)biphenyl-3-yl]pyridin-2-yl}piperazine-1-carboxylate
Yield 90.3%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

tert-Butyl 4-(4-(4-hydroxy-4′-(trifluoromethyl)biphenyl-3-yl)pyridin-2-yl)piperazine-1-carboxylate (Preparation 114, 200 mg, 0.400 mmol) was dissolved in dimethyl sulfoxide (3 mL) and potassium carbonate (110 mg, 0.800 mmol) was added followed by 5-chloro-N-(2,4-dimethoxybenzyl)-2,4-difluoro-N-(1,3,4-thiadiazol-2-yl)benzenesulfonamide (Preparation 16, 185 mg, 0.400 mmol). The reaction was stirred at room temperature for 18 hours and then partitioned between ethyl acetate (10 mL) and water (5 mL). The organic layer was separated and washed with brine (5 mL), dried over anhydrous MgSO4, filtered and concentrated in vacuo. The residue was purified on silica gel by Biotage™ (7% to 60% ethyl acetate in heptane over 20 CV) to give the title product (340 mg, 90%) as a yellow foam.

Workup

  1. custompartitioned between ethyl acetate (10 mL) and water (5 mL)
  2. customThe organic layer was separated
  3. washwashed with brine (5 mL)
  4. dry with materialdried over anhydrous MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified on silica gel by Biotage™ (7% to 60% ethyl acetate in heptane over 20 CV)

Sources & evidence

ORD record
ord-4de01680eb2e4e6a9641b4148ef439ef
Source dataset
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08772293B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes