Diisopropyl Ether → HCID 88469259, compound

HRID 1088119Notes

Reaction equation

HRID 1088119 reaction equation
[NH2:1][C:2]1[S:3][CH:4]=[C:5]([CH2:7][C:8]([NH:10][CH:11]2[C:23](=[O:24])[N:13]3[C:14]([C:20]([OH:22])=[O:21])=[C:15]([CH:18]=[CH2:19])[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1.C(=O)(O)[O-].[Na+:29].[C:30]([O:36][CH2:37]I)(=[O:35])[C:31]([CH3:34])([CH3:33])[CH3:32].C(OC(C)C)(C)C>CN(C)C=O.C(OCC)(=O)C>[NH2:1][C:2]1[S:3][CH:4]=[C:5]([CH2:7][C:8]([NH:10][CH:11]2[C:23](=[O:24])[N:13]3[C:14]([C:20]([O-:22])=[O:21])=[C:15]([CH:18]=[CH2:19])[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1.[Na+:29].[NH2:1][C:2]1[S:3][CH:4]=[C:5]([CH2:7][C:8]([NH:10][CH:11]2[C:23](=[O:24])[N:13]3[C:14]([C:20]([O:22][CH2:37][O:36][C:30](=[O:35])[C:31]([CH3:34])([CH3:33])[CH3:32])=[O:21])=[C:15]([CH:18]=[CH2:19])[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1

Participants

8

Reactant 4

HCID 7914Diisopropyl EtherHCID 104401Iodomethyl pivalateHCID 516892Sodium BicarbonateHCID 88469260Unii-nyh6qmq9H0

Product 2

HCID 88469259HCID 88469259, compoundHCID 88469761HCID 88469761, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolvent2×HCID 8857Ethyl AcetateSolvent

Procedure

Sodium 7-[2-(2-aminothiazol-4-yl)acetamido]-3-vinyl-3-cephem-4-carboxylate (1.36 g), which was prepared from 7-[2-(2-aminothiazol-4-yl)acetamido]-3-vinyl-3-cephem-4-carboxylic acid (1.33 g) and sodium bicarbonate (0.304 g), was dissolved in N,N-dimethylformamide (14 ml). To this solution was added iodomethyl pivalate (0.932 g) in N,N-dimethylformamide (3 ml) under ice-cooling, followed by stirring at the same temperature for 10 minutes. After addition of ethyl acetate (80 ml), the reaction mixture was washed twice with water, three times with 5% aqueous solution of sodium bicarbonate and twice with an aqueous solution of sodium chloride in turn, dried over anhydrous magnesium sulfate, and then evaporated to dryness under reduced pressure to give a residue, which was pulverized with diisopropyl ether to obtain pivaloyloxymethyl 7-[2-(2-aminothiazol-4-yl)acetamido]-3-vinyl-3-cephem-4-carboxylate (1.0 g), mp 128°-132° C. (dec.).

Workup

  1. temperaturecooling
  2. washthe reaction mixture was washed twice with water, three times with 5% aqueous solution of sodium bicarbonate and twice with an aqueous solution of sodium chloride in turn
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customevaporated to dryness under reduced pressure
  5. customto give a residue, which

Sources & evidence

ORD record
ord-b48c8002175340bd945b6c6501ff07a1
Source dataset
uspto-grants-1990_10
Patent number
US04960889

Reaction notes

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