Ferrier−Petasis Rearrangement of 4-(Vinyloxy)azetidin-2-ones: An Entry to Carbapenams and Carbacephams
作者:Anna Kozioł、Barbara Grzeszczyk、Andrzej Kozioł、Olga Staszewska-Krajewska、Bartłomiej Furman、Marek Chmielewski
DOI:10.1021/jo101463w
日期:2010.10.15
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
三氟甲磺酸三甲基硅烷基酯促进4-(乙烯基氧基)-,4-(丙烯氧基)-和4-(异丙烯氧基)氮杂环丁烷-2-酮的Ferer-Petasis重排为相应的4-(羰基甲基)氮杂环丁烷-2-酮。后者化合物可作为碳青霉烯抗生素合成中的诱人中间体。为了说明该反应的潜力,已将选定的重排产物转化为碳青霉烯。