p-Toluenesulfonic acid → 5-chloro-2-(2-chloro-4-iodo-phenylamino)-N-(2,3-dihydroxy-propoxy)-3,4-difluoro-benzamide

HRID 2218467Notes

Reaction equation

HRID 2218467 reaction equation
[Cl:1][C:2]1[C:3]([F:30])=[C:4]([F:29])[C:5]([NH:20][C:21]2[CH:26]=[CH:25][C:24]([I:27])=[CH:23][C:22]=2[Cl:28])=[C:6]([CH:19]=1)[C:7]([NH:9][O:10][CH2:11][CH:12]1[CH2:16][O:15]C(C)(C)[O:13]1)=[O:8].C1(C)C=CC(S(O)(=O)=O)=CC=1>CO.O>[Cl:1][C:2]1[C:3]([F:30])=[C:4]([F:29])[C:5]([NH:20][C:21]2[CH:26]=[CH:25][C:24]([I:27])=[CH:23][C:22]=2[Cl:28])=[C:6]([CH:19]=1)[C:7]([NH:9][O:10][CH2:11][CH:12]([OH:13])[CH2:16][OH:15])=[O:8]

Participants

5

Reactant 2

HCID 6101p-Toluenesulfonic acidHCID 222864765-chloro-2-(2-chloro-4-iodo-phenylamino)-N-(2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-3,4-difluoro-benzamide

Product 1

HCID 101433245-chloro-2-(2-chloro-4-iodo-phenylamino)-N-(2,3-dihydroxy-propoxy)-3,4-difluoro-benzamide

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

To a stirring solution of 5-chloro-2-(2-chloro-4-iodo-phenylamino)-N-(2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-3,4-difluoro-benzamide (3.7 g, 6.45 mmol) in methanol (20 mL) and water (2 mL) was added p-toluenesulfonic acid (0.12 g, 0.65 mmol). After 20 hours the reaction was concentrated in vacuo. The afforded residue was partitioned between ethyl acetate and water. The organic layer was washed twice with saturated NaHCO3 solution and twice with saturated brine solution. The organic layers were collected, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by crystallization with methanol/water and the solids were dried in a vacuum oven at 40° C. to afford 5-chloro-2-(2-chloro-4-iodo-phenylamino)-N-(2,3-dihydroxy-propoxy)-3,4-difluoro-benzamide: m.p.=152-154° C.; 1NMR (400 MHz, DMSO-d6) δ 12.03 (s, 1H), 8.83 (s, 1H), 7.76 (s, 1H), 7.66 (d, 1H, J=6.8), 7.47 (d, 1H, J=8.5), 6.68 (t, 1H, J=6.6), 4.83 (bs, 1H), 4.60 (bs, 1H), 3.89-3.92 (m, 1H), 3.68-3.76 (m, 2H), 3.30 (2H, partially hidden by HDO); MS(APCI+)=533.0/535.0; Anal. calcd/found for C16H13Cl2F2IN2O4: C, 36.05/36.23; H, 2.46/2.40; N, 5.25/5.03; F, 7.13/7.14.

Workup

  1. concentrationAfter 20 hours the reaction was concentrated in vacuo
  2. customThe afforded residue was partitioned between ethyl acetate and water
  3. washThe organic layer was washed twice with saturated NaHCO3 solution and twice with saturated brine solution
  4. customThe organic layers were collected
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by crystallization with methanol/water
  9. customthe solids were dried in a vacuum oven at 40° C.

Sources & evidence

ORD record
ord-cbc383e9c551459ab7aefcefa4478545
Source dataset
uspto-grants-2008_08
Patent number
US07411001B2

Reaction notes

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