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

HRID 364563Notes

Reaction equation

HRID 364563 reaction equation
[CH:1]([NH:3][C:4]1[S:5][CH:6]=[C:7]([C:9](=[N:13][O:14][CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])[C:10]([OH:12])=O)[N:8]=1)=[O:2].[NH2:21][CH:22]1[C:42](=[O:43])[N:24]2[C:25]([C:29]([O:31][CH2:32][C:33]3[CH:38]=[CH:37][C:36]([N+:39]([O-:41])=[O:40])=[CH:35][CH:34]=3)=[O:30])=[CH:26][CH2:27][S:28][C@H:23]12.CN(C)C=O.P(Cl)(Cl)(Cl)=O>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][C:16]([O:18][CH2:19][CH3:20])=[O:17])[C:10]([NH:21][CH:22]2[C:42](=[O:43])[N:24]3[C:25]([C:29]([O:31][CH2:32][C:33]4[CH:34]=[CH:35][C:36]([N+:39]([O-:41])=[O:40])=[CH:37][CH:38]=4)=[O:30])=[CH:26][CH2:27][S:28][C@H:23]23)=[O:12])[N:8]=1)=[O:2]

Participants

8

Reactant 4

HCID 6228DimethylformamideHCID 24813Phosphorus oxychlorideHCID 12775080p-Nitrobenzyl 7-amino-3-cephem-4-carboxylateHCID 544193372-Ethoxycarbonylmethoxyimino-2-(2-formamidothiazol-4-yl)acetic acid

Product 1

HCID 1317124774-Nitrobenzyl 7-[2-(2-formamidothiazol-4-yl)-2-ethoxycarbonylmethoxyiminoacetamido]-3-cephem-4-carboxylateYield 90.9%

Reagents, catalysts & solvents 3

HCID 180AcetoneSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

2-(2-Formamidothiazol-4-yl)-2-ethoxycarbonylmethoxyiminoacetic acid (syn isomer, 1.35 g.), 4-nitrobenzyl 7-amino-3-cephem-4-carboxylate (1.54 g.), N,N-dimethylformamide (393 mg.), phosphoryl chloride (825 mg.), tetrahydrofuran (21.2 ml.), acetone (3.9 ml.) and water (3.9 ml.) were treated in a similar manner to that of Example 15-(1) to give 4-nitrobenzyl 7-[2-(2-formamidothiazol-4-yl)-2-ethoxycarbonylmethoxyiminoacetamido]-3-cephem-4-carboxylate (syn isomer, 2.52 g.).

Sources & evidence

ORD record
ord-bbf5b73c19074733b982895abb5f6242
Source dataset
uspto-grants-1986_08
Patent number
US04604456

Reaction notes

Loading…