Trimethylsilyl triflate promotes Ferrier-Petasis rearrangement of 4-(vinyloxy)-, 4-(propenyloxy)-, and 4-(isopropenyloxy)azetidin-2-ones to corresponding 4-(carbonylmethyl)azetidin-2-ones. The latter compounds may serve as attractive intermediates in the synthesis of carbapenem antibiotics. To illustrate the potential of this reaction, selected rearrangement products have been transformed into carbapenams.
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| http://dx.doi.org/10.1021/jo101463w | DOI Listing |
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