Reactions of 1,2-Bis(trimethylsilyloxy)cycloalkenes with the Diethyl Acetals of Aldehydes
作者:Fuye Gao、D. Jean Burnell
DOI:10.1021/jo051683+
日期:2006.1.1
Lewis acid-mediated reactions of 1,2-bis(trimethylsilyloxy)cyclobutene with acetals derived from a variety of aldehydes, followed by treatment with Amberlyst 15 resin in TFA, yielded 1,3-cyclopentanedione products, but reactions with 3,3-dimethyl-1,2-bis(trimethylsilyloxy)cyclobutene led to 1,2-cyclopentanediones. Reactions of 1,2-bis(trimethylsilyloxy)cyclopentene gave intermediates that did not undergo
路易斯酸介导的1,2-双(三甲基甲硅烷氧基)环丁烯与衍生自多种醛的缩醛的反应,然后在TFA中用Amberlyst 15树脂处理,得到1,3-环戊二酮产品,但与3,3-二甲基反应-1,2-双(三甲基甲硅烷氧基)环丁烯生成1,2-环戊二酮。1,2-双(三甲基甲硅烷氧基)环戊烯的反应生成的中间体在TFA中与Amberlyst 15树脂没有发生骨架重排。