Trifluoroacetic acid → 5-{3-[4-(3,4-Dichloro-phenyl)-6-trifluoromethyl-pyrimidin-2-yl]-phenyl}-thiophene-2-sulfonic acid amide

HRID 1928219Notes

Reaction equation

HRID 1928219 reaction equation
C([NH:5][S:6]([C:9]1[S:10][C:11]([C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([C:20]3[N:25]=[C:24]([C:26]([F:29])([F:28])[F:27])[CH:23]=[C:22]([C:30]4[CH:35]=[CH:34][C:33]([Cl:36])=[C:32]([Cl:37])[CH:31]=4)[N:21]=3)[CH:15]=2)=[CH:12][CH:13]=1)(=[O:8])=[O:7])(C)(C)C.C(O)(C(F)(F)F)=O>ClCCl>[Cl:37][C:32]1[CH:31]=[C:30]([C:22]2[CH:23]=[C:24]([C:26]([F:27])([F:29])[F:28])[N:25]=[C:20]([C:16]3[CH:15]=[C:14]([C:11]4[S:10][C:9]([S:6]([NH2:5])(=[O:7])=[O:8])=[CH:13][CH:12]=4)[CH:19]=[CH:18][CH:17]=3)[N:21]=2)[CH:35]=[CH:34][C:33]=1[Cl:36]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 57468966N-tert-Butyl-5-{3-[6-(3,4-dichloro-phenyl)-4-trifluoromethyl-pyrimidin-2-yl]-phenyl}-thiophene-2-sulfonic acid amide

Product 1

HCID 574689655-{3-[4-(3,4-Dichloro-phenyl)-6-trifluoromethyl-pyrimidin-2-yl]-phenyl}-thiophene-2-sulfonic acid amideYield 68%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a cooled and stirred solution of N-tert-butyl-5-{3-[6-(3,4-dichloro-phenyl)-4-trifluoromethyl-pyrimidin-2-yl]-phenyl}-thiophene-2-sulfonic acid amide (0.39 g) in dichloromethane (6 mL) was added TFA (6 mL) and the reaction mixture was allowed to stir at room temperature for 15 h. The mixture was evaporated to dryness and saturated NaHCO3 solution (4 mL), diethyl ether and heptane were added. The mixture was stirred at room temperature for 1 h, the precipitate was collected by filtration and further purified by flash chromatography (heptane/ethyl acetate) and crystallization (THF/hexane) to yield the title compound as an off-white solid (0.24 g, 51%). MS (ISN) 527.9 [(M−H)−]; mp 203° C.

Workup

  1. temperatureTo a cooled
  2. customThe mixture was evaporated to dryness and saturated NaHCO3 solution (4 mL), diethyl ether and heptane
  3. additionwere added
  4. stirringThe mixture was stirred at room temperature for 1 h
  5. filtrationthe precipitate was collected by filtration
  6. customfurther purified by flash chromatography (heptane/ethyl acetate) and crystallization (THF/hexane)

Sources & evidence

ORD record
ord-ae4d8c0d9dec43b0865aae03938e0ab4
Source dataset
uspto-grants-2012_05
Patent number
US08183262B2

Reaction notes

Loading…