The chemistry of penicillanic acids. Part I. 6,6-Dibromo- and 6,6-di-iodo-derivatives
作者:J. P. Clayton
DOI:10.1039/j39690002123
日期:——
6-Dibromopenicillanic acid (IIIa) and 6,6-di-iodopenicillanic acid (IIIc) have been observed in the products of the deamination of 6β-aminopenicillanic acid (Ia) in the presence of sodium bromide and sodium iodide respectively. Deamination of (Ia) in the presence of bromine has resulted in the isolation of 6,6-dibromopenicillanic acid (IIIa) in 35% yield. The 1β-(Va) and 1α-(VIa) sulphoxides of this acid are described
作者:John E.G. Kemp、Michael D. Closier、Mark H. Stefaniak
DOI:10.1016/s0040-4039(01)95524-8
日期:1979.1
Penicillin -cyanosulphoximines are obtained by permanganate oxidation of the sulphilimines. Phthalimidosulphoximines are obtained from penicillin or cephalosporinsulphoxides are phthalimidonitrene (from -aminophthalimide with lead tetraacetate).