Lewis Acid Catalyzed Enlargement of Cyclic β-Alkoxyenals and One-Pot Synthesis of Polyfunctional Enoxysilanes Derived from Aucubin with Trimethylsilyldiazomethane
作者:Christelle Lemus、Marko Poleschak、Sophie Gailly、Marine Desage-El Murr、Michel Koch、Brigitte Deguin
DOI:10.1002/chem.201203968
日期:2013.4.8
homologations dependent on the nature of carbonyl function and catalysts have been observed during the formation of enoxysilanes (see scheme). Trimethylsilyl trifluoromethanesulfonate (TMSOTf) and AlCl3 were identified as suitable catalysts to promote the homologation and ring‐enlargement.
一步一步将吡喃烷转化为环氧庚烷:在环氧硅烷的形成过程中,观察到了高度羰基和立体选择性的同系物,取决于羰基官能团和催化剂的性质(请参见方案)。三氟甲磺酸三甲基甲硅烷基酯(TMSOTf)和AlCl 3被认为是促进同源和扩环的合适催化剂。