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-Trimethylsilyloxy-α-diazo-β-ketophosphonates were prepared in two steps from γ-lactones. After exposure to catalytic rhodium(II) in refluxing toluene and further aqueous treatment, they gave rise to α-phosphono-δ-lactones in moderate to good yields.
Laboratoire de Chimie Organique, Département de Biochimie, Institut National des Sciences Appliquées, 20 avenue A. Einstein, 69621 Villeurbanne, France
Laboratoire de Chimie Organique, Département de Biochimie, Institut National des Sciences Appliquées, 20 avenue A. Einstein, 69621 Villeurbanne, France