Dimethylformamide → 4-Nitrobenzyl 7-[2-(2-formamidothiazol-4-yl)-2-isobutoxyiminoacetamido]-3-cephem-4-carboxylate

HRID 1284749Notes

Reaction equation

HRID 1284749 reaction equation
[CH:1]([NH:3][C:4]1[S:5][CH:6]=[C:7]([C:9](=[N:13][O:14][CH2:15][CH:16]([CH3:18])[CH3:17])[C:10]([OH:12])=O)[N:8]=1)=[O:2].CN(C)C=O.P(Cl)(Cl)(Cl)=O.[NH2:29][CH:30]1[C:50](=[O:51])[N:32]2[C:33]([C:37]([O:39][CH2:40][C:41]3[CH:46]=[CH:45][C:44]([N+:47]([O-:49])=[O:48])=[CH:43][CH:42]=3)=[O:38])=[CH:34][CH2:35][S:36][C@H:31]12>O.CC(C)=O.O1CCCC1>[CH:1]([NH:3][C:4]1[S:5][CH:6]=[C:7]([C:9](=[N:13][O:14][CH2:15][CH:16]([CH3:18])[CH3:17])[C:10]([NH:29][CH:30]2[C:50](=[O:51])[N:32]3[C:33]([C:37]([O:39][CH2:40][C:41]4[CH:42]=[CH:43][C:44]([N+:47]([O-:49])=[O:48])=[CH:45][CH:46]=4)=[O:38])=[CH:34][CH2:35][S:36][C@H:31]23)=[O:12])[N:8]=1)=[O:2]

Participants

8

Reactant 4

HCID 6228DimethylformamideHCID 24813Phosphorus oxychlorideHCID 12775080p-Nitrobenzyl 7-amino-3-cephem-4-carboxylateHCID 539625342-(2-Formamidothiazol-4-yl)-2-isobutoxyiminoacetic acid

Product 1

HCID 1317124594-Nitrobenzyl 7-[2-(2-formamidothiazol-4-yl)-2-isobutoxyiminoacetamido]-3-cephem-4-carboxylateYield 91%

Reagents, catalysts & solvents 3

HCID 180AcetoneSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

2-(2-Formamidothiazol-4-yl)-2-iso-butoxyiminoacetic acid (syn isomer, 6.48 g.), N,N-dimethylformamide (2.10 g.), phosphoryl chloride (4.40 g.), tetrahydrofuran (110 ml.), 4-nitrobenzyl 7-amino-3-cephem-4-carboxylate (8.23 g.), acetone (16 ml.) and water (16 ml.) were treated in a similar manner to that of Example 15-(1) to give 4-nitrobenzyl 7-[2-(2-formamidothiazol-4-yl)-2-iso-butoxyiminoacetamido]-3-cephem-4-carboxylate (syn isomer, 12.8 g.).

Sources & evidence

ORD record
ord-bb7921d7d3934b57ad812865096d5240
Source dataset
uspto-grants-1986_01
Patent number
US04563522

Reaction notes

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