SCHEDULED MAINTENANCE
Certain thioamides convert cephalosporanic acids into 3-spirocephamoic acids. A two-stage process is suggested, exemplifying the reversible polarisability of the 3,4-double bond in the cephalosporanic acids. The first stage probably occurs in the anion, the second in the undissociated acid.
H. Fazakerley, D. A. Gilbert, G. I. Gregory, J. K. Lazenby and A. G. Long, J. Chem. Soc. C, 1967, 1959 DOI: 10.1039/J39670001959
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