1,1'-(Diazomethylene)bis(benzene) → HCID 88777142, Verbindung
Reaktionsgleichung
[C:1]1([C:7]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[N+]=[N-])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH:16]([C:18]1[CH:23]([C:24]([OH:26])=[O:25])[N:22]2[C:27](=[O:38])[CH:28]([NH:29][C:30](=[O:37])[CH2:31][C:32]3[S:33][CH:34]=[CH:35][CH:36]=3)[C@H:21]2[S:20][CH:19]=1)=[O:17]>O1CCCC1>[CH:16]([C:18]1[CH:23]([C:24]([O:26][CH:7]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)=[O:25])[N:22]2[C:27](=[O:38])[CH:28]([NH:29][C:30](=[O:37])[CH2:31][C:32]3[S:33][CH:34]=[CH:35][CH:36]=3)[C@H:21]2[S:20][CH:19]=1)=[O:17]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of diphenyldiazomethane (0.213 g, 1.1. mmol) in dry tetrahydrofuran (2 ml) was added dropwise with stirring to the 3-formyl-7-(2-thienylacetamido)-2-cephem-4-carboxylic acid (0.352 g., 1 mmol) in dry tetrahydrofuran (10 ml) at 40°. The reagent was allowed to completely react as noted by the color changes between each addition. The reaction was stirred at 40° for two hours after the addition was completed and then the solvent was removed in vacuo. The residual oil was dissolved in chloroform, washed with 5% NaHCO3, dried over MgSO4 and concentrated to half volume. The product was precipitated by the addition of hexane.