Water → HCID 57286878, compound

HRID 1941627Notes

Reaction equation

HRID 1941627 reaction equation
[OH:1][C@@H:2]([C@@H:4]1[C@@H:7]([C@H:8]([C:10]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[S:11])[CH3:9])[N:6]([CH2:18][C:19]([O:21][CH2:22][CH:23]=[CH2:24])=[O:20])[C:5]1=[O:25])[CH3:3].N1C=CC=CC=1.[CH3:32][Si:33]([CH3:36])([CH3:35])Cl.O>C1(C)C=CC=CC=1>[CH3:32][Si:33]([CH3:36])([CH3:35])[O:1][C@@H:2]([C@@H:4]1[C@@H:7]([C@H:8]([C:10]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[S:11])[CH3:9])[N:6]([CH2:18][C:19]([O:21][CH2:22][CH:23]=[CH2:24])=[O:20])[C:5]1=[O:25])[CH3:3]

Participants

6

Reactant 4

HCID 962WaterHCID 1049PyridineHCID 6397ChlorotrimethylsilaneHCID 57301775HCID 57301775, compound

Product 1

HCID 57286878HCID 57286878, compoundYield 97%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

To a solution of (3S,4S)-3-[(1R)-1-hydroxyethyl]-4-[(1R)-1-phenylthiocarbonylethyl]-1-allyloxycarbonylmethyl-2-azetidinone (5.04 g: 13.35 mmole) in toluene (40 ml) under ice cooling, pyridine (1.51 ml: 18.69 mmole) is added and trimethylchlorosilane (2.26 ml: 17.36 mmole) is added dropwise. The mixture is stirred at room temperature for 1.5 hours. Water (80 ml) is added to the reaction mixture, and aqueous layer is extracted with toluene. The extract and the organic layer are combined, washed with water (2 times) and saturated brine, dried over magnesium sulfate, and concentrated in vacuo to give crude (3S,4S)-3-[(1R)-1-trimethylsilyloxyethyl]-4-[(1R)-1-phenylthiocarbonylethyl]-1-allyloxycarbonylmethyl-2-azetidinone (5.614 g) as oily residue. Yield: 94%.

Workup

  1. extractionis extracted with toluene
  2. extractionThe extract
  3. washwashed with water (2 times) and saturated brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-bf52569c42fd46ce9577c0d8997836c3
Source dataset
uspto-grants-1997_12
Patent number
US05703243

Reaction notes

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