Tetrahydrofuran → HCID 178445730, compound

HRID 1036543Notes

Reaction equation

HRID 1036543 reaction equation
[OH:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([C@:12]1([CH3:18])[CH2:16][O:15][C:14](=[O:17])[NH:13]1)[CH:6]=[CH:5]2.O1CCCC1.[C:24]([C@H:28]1[CH2:33][CH2:32][C@H:31](O)[CH2:30][CH2:29]1)([CH3:27])([CH3:26])[CH3:25].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>>[C:24]([C@@H:28]1[CH2:33][CH2:32][C@H:31]([O:1][C:2]2[CH:3]=[C:4]3[C:9](=[CH:10][CH:11]=2)[CH:8]=[C:7]([C@:12]2([CH3:18])[CH2:16][O:15][C:14](=[O:17])[NH:13]2)[CH:6]=[CH:5]3)[CH2:30][CH2:29]1)([CH3:27])([CH3:26])[CH3:25]

Participants

6

Reactant 5

HCID 8028TetrahydrofuranHCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 51066623(R)-4-(6-hydroxynaphthalen-2-yl)-4-methyloxazolidin-2-oneHCID 178445812HCID 178445812, compound

Product 1

HCID 178445730HCID 178445730, compoundYield 49.5%

Procedure

(R)-4-(6-Hydroxy-naphthalen-2-yl)-4-methyl-oxazolidin-2-one (0.0575 g, 0.000236 mol;) was dissolved in tetrahydrofuran (3.00 mL, 0.0370 mol) in a capped 40 mL reaction vial equipped with a magnetic stir bar. trans 4-tert-Butyl-cyclohexanol (0.0443 g, 0.000284 mol) was added, followed by triphenylphosphine (0.0992 g, 0.000378 mol;) and the mixture was heated to reflux. diisopropyl azodicarboxylate (0.0745 mL, 0.000378 mol) was then added and the reaction mixture was heated at reflux overnight. TLC analysis showed that the reaction was complete. The stir bar was removed and the mixture was concentrated via Genevac. The resulting product was purified by flash chromatography (20-30% EtOAc in methylene chloride) to give 0.0446 g of the title compound (49% yield).

Workup

  1. customvial equipped with a magnetic stir bar
  2. temperaturethe mixture was heated to reflux
  3. temperaturethe reaction mixture was heated
  4. temperatureat reflux overnight
  5. customThe stir bar was removed
  6. concentrationthe mixture was concentrated via Genevac
  7. customThe resulting product was purified by flash chromatography (20-30% EtOAc in methylene chloride)

Sources & evidence

ORD record
ord-148c4f0c2bd349828b1d68a288d4ee54
Source dataset
uspto-grants-2013_10
Patent number
US08546359B2

Reaction notes

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