Diethyl Ether → HCID 58595175, compound

HRID 891490Notes

Reaction equation

HRID 891490 reaction equation
[Na+].[C:2]([C:5]1[N:6]=[C:7]([N:10]2[CH2:13][CH:12]([S:14][C:15]3[C@H:16]([CH3:29])[C@@H:17]4[C@@H:24]([C@H:25]([OH:27])[CH3:26])[C:23](=[O:28])[N:18]4[C:19]=3[C:20]([O-:22])=[O:21])[CH2:11]2)[S:8][CH:9]=1)(=[O:4])[NH2:3].[CH2:30](I)[CH3:31].C(OCC)(=O)C.C(OCC)C>CN(C)C=O.C(Cl)Cl.CCCCCC>[C:2]([C:5]1[N:6]=[C:7]([N:10]2[CH2:13][CH:12]([S:14][C:15]3[C@H:16]([CH3:29])[C@@H:17]4[C@@H:24]([C@H:25]([OH:27])[CH3:26])[C:23](=[O:28])[N:18]4[C:19]=3[C:20]([O:22][CH2:30][CH3:31])=[O:21])[CH2:11]2)[S:8][CH:9]=1)(=[O:4])[NH2:3]

Participants

8

Reactant 4

HCID 3283Diethyl EtherHCID 6340IodoethaneHCID 8857Ethyl AcetateHCID 131725307HCID 131725307, compound

Product 1

HCID 58595175HCID 58595175, compoundYield 106.9%

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolventHCID 8058HexaneSolvent

Procedure

To a solution of (1R,5S,6S)-2-[1-(4-carbamoyl-1,3-thiazol-2-yl)azetidin-3-yl]thio-6-[(R)-1-hydroxyethyl]-1-methylcarbapen-2-em-3-carboxylic acid sodium salt (357 mg, 0.80 mmol) (obtained as described in Example 3) in dimethylformamide (5 ml) was added ethyl iodide (357 mg, 2.40 mmol) at 0° C. under an atmosphere of nitrogen and the mixture was stirred for 1 hour. The mixture was further stirred for 2 hours while gradually raising the temperature to room temperature. At the end of this time, to the reaction mixture was added ethyl acetate and the organic layer was washed sequentially with 10% aqueous sodium chloride solution, 10% aqueous sodium thiosulfate solution saturated aqueous sodium hydrogencarbonate solution, and saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using ethyl acetate—20% acetonitrile; ethyl acetate—40% acetonitrile; ethyl acetate—60% acetonitrile and ethyl acetate to give a purified product, which was dissolved in methylene chloride and diethyl ether and hexane were sequentially added to the solution to afford ethyl (1R,5S,6S)-2-[1-(4-carbamoyl-1,3-thiazol-2-yl)azetidin-3-yl]thio-6-[(R)-1-hydroxyethyl]-1-methylcarbapen-2-em-3-carboxylate (387 mg, yield 95%) as a colorless powder.

Workup

  1. stirringThe mixture was further stirred for 2 hours
  2. washthe organic layer was washed sequentially with 10% aqueous sodium chloride solution, 10% aqueous sodium thiosulfate solution saturated aqueous sodium hydrogencarbonate solution, and saturated aqueous sodium chloride solution
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by chromatography on a silica gel column
  7. customethyl acetate—60% acetonitrile and ethyl acetate to give a purified product, which

Sources & evidence

ORD record
ord-435d1618e511426cbffe5041a991213b
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

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