Phosphorus oxychloride → 7-[2-(2-formamidothiazol-4-yl)-2-(2-azidoethoxyimino)acetamido]-3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid
Reaction equation
P(Cl)(Cl)(Cl)=O.[CH:6]([NH:8][C:9]1[S:10][CH:11]=[C:12]([C:14](=[N:18][O:19][CH2:20][CH2:21][N:22]=[N+:23]=[N-:24])[C:15]([OH:17])=O)[N:13]=1)=[O:7].[NH2:25][CH:26]1[C:44](=[O:45])[N:28]2[C:29]([C:41]([OH:43])=[O:42])=[C:30]([CH2:33][S:34][C:35]3[N:39]([CH3:40])[N:38]=[N:37][N:36]=3)[CH2:31][S:32][C@H:27]12.C[Si](CC(N)=O)(C)C>C(OCC)(=O)C.CN(C)C=O>[CH:6]([NH:8][C:9]1[S:10][CH:11]=[C:12]([C:14](=[N:18][O:19][CH2:20][CH2:21][N:22]=[N+:23]=[N-:24])[C:15]([NH:25][CH:26]2[C:44](=[O:45])[N:28]3[C:29]([C:41]([OH:43])=[O:42])=[C:30]([CH2:33][S:34][C:35]4[N:39]([CH3:40])[N:38]=[N:37][N:36]=4)[CH2:31][S:32][C@H:27]23)=[O:17])[N:13]=1)=[O:7]Participants
7
Reactant 4
Product 1
Reagents, catalysts & solvents 2
Procedure
N,N-Dimethylformamide (0.207 g.), phosphoryl chloride (0.436 g.), 2-(2-formamidothiazol-4-yl)-2-(2-azidoethoxyimino)acetic acid (syn isomer, 0.65 g.), 7-amino-3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid (0.85 g.), trimethylsilylacetamide (2.71 g.) and ethyl acetate (20 ml.) were treated in a similar manner to that of Example 5-(1) to give 7-[2-(2-formamidothiazol-4-yl)-2-(2-azidoethoxyimino)acetamido]-3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid (syn isomer, 0.80 g.).
Sources & evidence
- ORD record
- ord-3072ba67b938479b8dcaa32a2511958f
- Source dataset
- uspto-grants-1987_10
- Patent number
- US04698337
Reaction notes
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