Oxygen → Benzyl alpha-[3-phenoxymethyl-7-oxo-4-thia-2,6-diazabicyclo[3,2,0]hept-2-en-6-yl]-alpha-(1-hydroxyethylidene)acetate

HRID 1679236Notes

Reaction equation

HRID 1679236 reaction equation
[O:1]([CH2:8][C:9]1[S:15][CH:14]2[CH:11]([C:12](=[O:30])[N:13]2[CH:16]([C:27]([CH3:29])=C)[C:17]([O:19][CH2:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[O:18])[N:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[O:31]=O.CSC>ClCCl.CO>[O:1]([CH2:8][C:9]1[S:15][CH:14]2[CH:11]([C:12](=[O:30])[N:13]2[C:16](=[C:27]([OH:31])[CH3:29])[C:17]([O:19][CH2:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[O:18])[N:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 977OxygenHCID 1068Dimethyl SulfideHCID 13578824HCID 13578824, compound

Product 1

HCID 70503985Benzyl alpha-[3-phenoxymethyl-7-oxo-4-thia-2,6-diazabicyclo[3,2,0]hept-2-en-6-yl]-alpha-(1-hydroxyethylidene)acetateYield 70.28%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of benzyl α-[3-phenoxymethyl-7-oxo-4-thia-2,6-diazabicyclo[3,2,0]hept-2-en-6-yl]-α-isopropenylacetate (4.22 g) in dichloromethane and methanol (5:1) is introduced ozonized oxygen until the blue color of the solution does not fade out. Then the solution is mixed with dimethyl sulfide, washed with water, dried, and concentrated. The obtained residue is purified by chromatography over silica gel containing 10% water to give benzyl α-[3-phenoxymethyl-7-oxo-4-thia-2,6-diazabicyclo[3,2,0]hept-2-en-6-yl]-α-(1-hydroxyethylidene)acetate (2.98 g: 70.28%).

Workup

  1. washwashed with water
  2. customdried
  3. concentrationconcentrated
  4. customThe obtained residue is purified by chromatography over silica gel containing 10% water

Sources & evidence

ORD record
ord-4932c043f4ec47e19e5eb5dfa6e89f00
Source dataset
uspto-grants-1978_03
Patent number
US04079181

Reaction notes

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