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Synlett 1994; 1994(4): 243-244
DOI: 10.1055/s-1994-22811
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A Synthetic Approach to 3-Substituted Cephalosporins: A New synthesis of 3-Chloro-3-Cephem

Gianfranco Cainelli* , Michele Contento, Mauro Panunzio, Sergio Sandri, Achille Umani-Ronchi, Marco Da Col
  • *Dipartimento di Chimica "G. Ciamician" Via Selmi, 2 40126 Bologna, Italy
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Publication Date:
22 March 2002 (online)

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An efficient approach to the synthesis of 3-chloro-3-cephem (Cefaclor), starting from the parent mesyloxy derivative is reported. The substitution is postulated to take place via an intermediate cyclic allene.