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ChemInform Abstract: Use of an Iodonium Ylide in the Synthesis of p-Nitrobenzyl (6R,7S) 3-Hydroxy-8-oxo-7-phenoxyacetamido-1-azabicyclo [4.2.0]octa-2-ene-2-carboxylate.

✍ Scribed by R. K. VAID; T. E. HOPKINS

Publisher: John Wiley and Sons
Year: 2010
Weight: 29 KB
Volume: 29
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199802243

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✦ Synopsis

Use of an Iodonium Ylide in the Synthesis of p-Nitrobenzyl (6R,7S) 3-Hydroxy-8-oxo-7-phenoxyacetamido-1-azabicyclo [4.2.0]octa-2-ene-2-carboxylate.

-The title compound (IV), a key intermediate in the synthesis of carbacephalosporins, is prepared by Rh(II)-catalyzed cyclization of the iodonium ylide (III). The cyclization mechanism is discussed. -(VAID,

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