作者:Nataliia V. Kirij、Dariya A. Dontsova、Natalya V. Pavlenko、Yurii L. Yagupolskii、Harald Scherer、Wieland Tyrra、Dieter Naumann
DOI:10.1002/ejoc.200800030
日期:2008.5
s to the C=O bond of aromatic aldehydes in the presence of cesium fluoride to give the corresponding“silylated” alcohols in high yields was performed. The reactivity of the “silylated” alcohols in the presence of nucleophilic reagents and Bronsted acids was studied. On the basis of isolated compounds and of intermediates detected by NMR spectroscopic methods, several reaction pathways are proposed
进行了在氟化铯存在下将三烷基(三氟乙烯基)硅烷选择性加成到芳族醛的 C=O 键上以高产率得到相应“甲硅烷基化”醇的条件。研究了“甲硅烷基化”醇在亲核试剂和布朗斯台德酸存在下的反应性。在分离的化合物和通过 NMR 光谱方法检测到的中间体的基础上,提出了几种反应途径。指出了三乙基(三氟乙烯基)硅烷和三甲基(三氟甲基)硅烷在可比条件下的反应行为之间的显着差异;这种差异可归因于高反应性的三氟乙烯基。“甲硅烷基化”醇的反应以高立体选择性进行,得到丙烯,(E) 异构体的酰氟和酸,纯度高于 98%。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)