作者:Hélène Lebel、Danielle Guay、Valérie Paquet、Kim Huard
DOI:10.1021/ol049085p
日期:2004.9.1
[reaction: see text] The rhodium(I)-catalyzed methylenation of ketones using trimethylsilyldiazomethane proceeds to give the corresponding alkenes in good yields (60-97%). The use of an excess of 2-propanol and 1,4-dioxane as a solvent were instrumental to obtain the desired alkenes in high yields. Superior results were achieved with the rhodium(I)-catalyzed methylenation in comparison with the standard
[反应:见正文]使用三甲基甲硅烷基重氮甲烷进行铑(I)催化的酮的甲基化反应,得到了相应的烯烃,收率很高(60-97%)。使用过量的2-丙醇和1,4-二恶烷作为溶剂有助于以高收率获得所需的烯烃。与标准Wittig反应相比,铑(I)催化的亚甲基化获得了优异的结果。