Trifluoroacetic acid → 3'-[4-(5-Chloro-thiophen-2-yl)-6-trifluoromethyl-pyrimidin-2-yl]-biphenyl-3-sulfonic acid amide

HRID 1962914Notes

Reaction equation

HRID 1962914 reaction equation
C([NH:5][S:6]([C:9]1[CH:10]=[C:11]([C:15]2[CH:20]=[CH:19][CH:18]=[C:17]([C:21]3[N:26]=[C:25]([C:27]4[S:28][C:29]([Cl:32])=[CH:30][CH:31]=4)[CH:24]=[C:23]([C:33]([F:36])([F:35])[F:34])[N:22]=3)[CH:16]=2)[CH:12]=[CH:13][CH:14]=1)(=[O:8])=[O:7])(C)(C)C.C(O)(C(F)(F)F)=O>ClCCl>[Cl:32][C:29]1[S:28][C:27]([C:25]2[CH:24]=[C:23]([C:33]([F:34])([F:35])[F:36])[N:22]=[C:21]([C:17]3[CH:16]=[C:15]([C:11]4[CH:12]=[CH:13][CH:14]=[C:9]([S:6]([NH2:5])(=[O:8])=[O:7])[CH:10]=4)[CH:20]=[CH:19][CH:18]=3)[N:26]=2)=[CH:31][CH:30]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 673930193'-[4-(5-Chloro-thiophen-2-yl)-6-trifluoromethyl-pyrimidin-2-yl]-biphenyl-3-sulfonic acid tert-butylamide

Product 1

HCID 250971933'-[4-(5-Chloro-thiophen-2-yl)-6-trifluoromethyl-pyrimidin-2-yl]-biphenyl-3-sulfonic acid amideYield 65.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a cooled and stirred solution of 3′-[4-(5-chloro-thiophen-2-yl)-6-trifluoromethyl-pyrimidin-2-yl]-biphenyl-3-sulfonic acid tert-butylamide (0.22 g) in dichloromethane (5 ml) was added TFA (5 ml) and the reaction mixture was allowed to stir at room temperature for 15 h. The mixture was evaporated, poured into saturated NaHCO3 solution (20 ml) and extracted with ethyl acetate (2×30 ml). The combined organic layers were washed with brine (20 ml), dried (MgSO4) and evaporated. Further purification by flash chromatography on silica gel (ethyl acetate/heptane) and crystallization (MeOH) yielded the title compound as a light yellow solid (0.13 g, 27%). MS (ISN) 494.3 [(M−H)−]; mp 226.5° C.

Workup

  1. temperatureTo a cooled
  2. customThe mixture was evaporated
  3. additionpoured into saturated NaHCO3 solution (20 ml)
  4. extractionextracted with ethyl acetate (2×30 ml)
  5. washThe combined organic layers were washed with brine (20 ml)
  6. dry with materialdried (MgSO4)
  7. customevaporated
  8. customFurther purification by flash chromatography
  9. customon silica gel (ethyl acetate/heptane) and crystallization (MeOH)

Sources & evidence

ORD record
ord-ed4326cecc2646adb67a63b974d7d019
Source dataset
uspto-grants-2013_04
Patent number
US08415380B2

Reaction notes

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