Trifluoroacetic acid → HCID 178461144, compound

HRID 2389200Notes

Reaction equation

HRID 2389200 reaction equation
[F:1][C:2]([C@H:5]1[CH2:10][CH2:9][C@H:8]([O:11][C:12]2[CH:13]=[C:14]3[C:19](=[CH:20][CH:21]=2)[CH:18]=[C:17]([C@:22]2([CH3:28])[CH2:26][O:25][C:24](=[O:27])[NH:23]2)[CH:16]=[CH:15]3)[CH2:7][CH2:6]1)([F:4])[CH3:3].C1C(=O)N([I:36])C(=O)C1.C(O)(C(F)(F)F)=O>CC#N>[F:1][C:2]([C@H:5]1[CH2:6][CH2:7][C@H:8]([O:11][C:12]2[C:13]([I:36])=[C:14]3[C:19](=[CH:20][CH:21]=2)[CH:18]=[C:17]([C@:22]2([CH3:28])[CH2:26][O:25][C:24](=[O:27])[NH:23]2)[CH:16]=[CH:15]3)[CH2:9][CH2:10]1)([F:4])[CH3:3]

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 120273N-IodosuccinimideHCID 178461142HCID 178461142, compound

Product 1

HCID 178461144HCID 178461144, compoundYield 90%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
15 °C

Procedure

(R)-4-(6-(trans-4-(1,1-difluoroethyl)cyclohexyloxy)naphthalen-2-yl)-4-methyloxazolidin-2-one (865 mg, 2.22 mmol) and NIS (550 mg, 2.45 mmol, 1.1 eq.) were dissolved in CH3CN (5 mL). Then CF3COOH (76 mg, 0.67 mmol, 0.3 eq.) was added to the mixture dropwise at 0° C. The mixture was warmed to 15° C. and stirred for another 1 h. Then the mixture was extracted with EtOAc and the organic layer was concentrated and purified by silica gel chromatography using PE/EA (1/1) as eluent to give the title compound as a slight red solid (1.02 g, 90%). EDI-MS (M+1): 515.8. 1H NMR (400 MHz, CDCl3) δ 8.16 (d, 1H), 7.73 (d, 2H), 7.48 (dd, 1H), 7.18 (d, 1H), 6.49 (s, 1H), 4.45-4.40 (m, 2H), 4.33-4.30 (m, 1H), 2.27-2.25 (m, 2H), 2.03-2.01 (m, 2H), 1.84 (s, 3H), 1.65-1.24 (m, 8H).

Workup

  1. extractionThen the mixture was extracted with EtOAc
  2. concentrationthe organic layer was concentrated
  3. custompurified by silica gel chromatography

Sources & evidence

ORD record
ord-453056eeb2364a4483173b6f99039d12
Source dataset
uspto-grants-2012_09
Patent number
US08269043B2

Reaction notes

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