Ethyl Acetate → HCID 86638175, compound

HRID 2194659Notes

Reaction equation

HRID 2194659 reaction equation
[C:1]([O:4][C@H:5]1[C@H:10]([N:11]=[C:12]=[S:13])[C@@H:9]([O:14][C:15](=[O:17])[CH3:16])[C@H:8]([O:18][C:19](=[O:21])[CH3:20])[C@@H:7]([CH2:22][O:23][C:24](=[O:26])[CH3:25])[O:6]1)(=[O:3])[CH3:2].[F:27][CH:28]([F:31])[CH2:29][NH2:30].CCOC(C)=O>CC#N>[C:1]([O:4][C@H:5]1[C@H:10]([NH:11][C:12]([NH:30][CH2:29][CH:28]([F:31])[F:27])=[S:13])[C@@H:9]([O:14][C:15](=[O:17])[CH3:16])[C@H:8]([O:18][C:19](=[O:21])[CH3:20])[C@@H:7]([CH2:22][O:23][C:24](=[O:26])[CH3:25])[O:6]1)(=[O:3])[CH3:2]

Participants

5

Reactant 3

HCID 8857Ethyl AcetateHCID 1362742,2-DifluoroethanamineHCID 14130735(2S,3R,4R,5S,6R)-6-(acetoxymethyl)-3-isothiocyanatotetrahydro-2H-pyran-2,4,5-triyl triacetate

Product 1

HCID 86638175HCID 86638175, compoundYield 56.5%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a stirred solution of (2S,3R,4R,5S,6R)-6-(acetoxymethyl)-3-isothiocyanato-tetrahydro-2H-pyran-2,4,5-triyl triacetate (0.64 g, 1.63 mmol) in CH3CN, was added neat 2,2-difluoroethylamine (0.23 g, 1.97 mmol), dropwise. The reaction was stirred at room temperature until complete by TLC (3.5 h). The reaction was washed with a minimal amount of saturated aqueous NaHCO3 (15 mL). The aqueous layer was then extracted three times with DCM, and the organic layers were combined, dried with MgSO4, filtered and concentrated. The concentrated mixture was purified via flash column chromatography in a solvent system of EtOAc and hexanes (1:1, 2:1. then pure EtOAc, respectively), providing (2S,3R,4R,5S,6R)-6-(acetoxymethyl)-3-(3-(2,2-difluoroethyl)thioureido)-tetrahydro-2H-pyran-2,4,5-triyl triacetate (0.433 g, 56% yield) 1H NMR (500 MHz, CDCl3) δ 1.99 (s, 3H), 2.00 (s, 3H), 2.03 (s, 3H), 2.06 (s, 3H), 3.83-3.86 (m, 2H), 3.95 (s, 1H), 4.02-4.09 (m, 2H), 4.18-4.23 (m, 1H), 5.05-5.11 (m, 1H), 5.21-5.30 (m, 1H), 5.72 (d, 1H, J=8.6 Hz), 5.94 (t, 1H, J=56.1 Hz), 6.63-6.73 (m, 2H).

Workup

  1. washThe reaction was washed with a minimal amount of saturated aqueous NaHCO3 (15 mL)
  2. extractionThe aqueous layer was then extracted three times with DCM
  3. dry with materialdried with MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe concentrated mixture was purified via flash column chromatography in a solvent system of EtOAc and hexanes (1:1, 2:1

Sources & evidence

ORD record
ord-ba4698a21b5d4e1bb7b5cb1c0d30a62c
Source dataset
uspto-grants-2012_12
Patent number
US08334310B2

Reaction notes

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