Toluene → HCID 178455819, compound

HRID 1694994Notes

Reaction equation

HRID 1694994 reaction equation
N(C(OCC)=O)=N[C:3](OCC)=O.C1(C)C=CC=CC=1.O[CH2:21][C@H:22]([NH:30][S:31]([C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][C:35]=1[N+:40]([O-:42])=[O:41])(=[O:33])=[O:32])[C@@H:23]1[CH2:27][C@@H:26]([CH3:28])[C:25](=[O:29])[O:24]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>O1CCCC1>[CH2:28]([C@@H:26]1[CH2:27][C@@H:23]([CH:22]2[CH2:21][N@@:30]2[S:31]([C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][C:35]=2[N+:40]([O-:42])=[O:41])(=[O:33])=[O:32])[O:24][C:25]1=[O:29])[CH3:3]

Participants

6

Reactant 4

HCID 1140TolueneHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 66645672N-{(S)-2-hydroxy-1-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}-2-nitrobenzenesulfonamide

Product 1

HCID 178455819HCID 178455819, compoundYield 92%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

1.60 ml of a solution of diethyl azodicarboxylate in toluene (40%) (3.52 mmol) was added to a solution of 1.05 g of N-{(S)-2-hydroxy-1-[(2S,4R)-4-methyl-5-oxotetrahydrofuran-2-yl]ethyl}-2-nitrobenzenesulfonamide obtained in Example (106f) (2.93 mmol) and 923 mg of triphenylphosphine (3.52 mmol) in tetrahydrofuran (30 ml) under ice-cooling over five minutes, and the mixture was stirred at the same temperature for five minutes. The reaction mixture was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (elution solvent: toluene/acetone=5/1) to obtain 916 mg of the title compound (yield: 92%).

Workup

  1. temperaturecooling over five minutes
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. customthe residue was purified by silica gel column chromatography (elution solvent: toluene/acetone=5/1)

Sources & evidence

ORD record
ord-036a117069dc4949a11149e87d1c7b63
Source dataset
uspto-grants-2012_04
Patent number
US08158790B2

Reaction notes

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