Triethylamine → HCID 67051754, compound

HRID 1808971Notes

Reaction equation

HRID 1808971 reaction equation
[F:1][C:2]1[C:3]([NH:12][C:13]2[CH:18]=[CH:17][C:16]([I:19])=[CH:15][C:14]=2[F:20])=[C:4]([CH:8]=[CH:9][C:10]=1[F:11])[C:5]([OH:7])=O.C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.C(N(CC)CC)C.[OH:61][CH2:62][CH2:63][C:64]1([OH:68])[CH2:67][NH:66][CH2:65]1>CN(C=O)C.C(OCC)(=O)C.O>[F:1][C:2]1[C:3]([NH:12][C:13]2[CH:18]=[CH:17][C:16]([I:19])=[CH:15][C:14]=2[F:20])=[C:4]([C:5]([N:66]2[CH2:67][C:64]([CH2:63][CH2:62][OH:61])([OH:68])[CH2:65]2)=[O:7])[CH:8]=[CH:9][C:10]=1[F:11]

Participants

8

Reactant 4

HCID 8471TriethylamineHCID 2724699PyBOPHCID 220256632-(2-Fluoro-4-iodoanilino)-3,4-difluorobenzoic acidHCID 552867093-Hydroxy-3-azetidineethanol

Product 1

HCID 67051754HCID 67051754, compoundYield 78%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

Palladium hydroxide (100 mg) was suspended in a solution of 1-(diphenylmethyl)-3-(2-hydroxyethyl)azetidin-3-ol (228 mg, 0.80 mmol) in methanol (15 mL), and the mixture was subjected to an atmosphere of hydrogen at 50 psi for 4 h. The catalyst was then removed by filtration through celite, and the filtrate was concentrated in vacuo to provide 3-(2-hydroxyethyl)azetidin-3-ol. This material was used in the subsequent reaction without purification. To a solution of 3,4-difluoro-2-[(2-fluoro-4-iodophenyl)amino]benzoic acid (314 mg, 0.80 mmol), prepared using procedures similar to those described in U.S. Pat. No. 7,019,033, in DMF (4 mL) was added PyBOP (416 mg, 0.80 mmol) and triethylamine (223 μL, 1.6 mmol). Finally, the unpurified 3-(2-hydroxyethyl)azetidin-3-ol was added, and the resulting mixture was stirred at rt for 16 h. Water and ethyl acetate were added, and the layers were separated. The aqueous phase was extracted with once more with ethyl acetate. The combined organic extracts were washed with brine, dried over magnesium sulfate, filtered, and concentrated in vacuo. The residue was purified by flash chromatography, eluting with ethyl acetate, to provide 1-({3,4-difluoro-2-[(2-fluoro-4-iodophenyl)amino]phenyl}carbonyl)-3-(2-hydroxyethyl)azetidin-3-ol as a colorless oil (303 mg, 0.62 mmol, 78% yield). 1H NMR (400 MHz, CDCl3): δ 8.46 (s, 1H), 7.39 (dd, 1H), 7.32 (m, 1H), 7.13 (m, 1H), 6.81 (m, 1H), 6.60 (m, 1H), 4.37 (br s, 1H), 4.28 (br m, 4H), 3.94 (br s, 2H), 2.19 (br s, 1H), 2.02 (m, 2H); MS (EI) for C18H16F3IN2O3: 491 (M-H).

Workup

  1. customThis material was used in the subsequent reaction without purification
  2. customthe layers were separated
  3. extractionThe aqueous phase was extracted with once more with ethyl acetate
  4. washThe combined organic extracts were washed with brine
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by flash chromatography
  9. washeluting with ethyl acetate

Sources & evidence

ORD record
ord-5d083e6db4564332b22bf2df7a056208
Source dataset
uspto-grants-2013_01
Patent number
US08362002B2

Reaction notes

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