作者:Ay�il Yurdakul、Christian Gurtner、Elena-Silvia Jung、Annalaura Lorenzi-Riatsch、Anthony Linden、Armin Guggisberg、Stefan Bienz、Manfred Hesse
DOI:10.1002/hlca.19980810547
日期:——
The reaction of α-nitro ketones to the corresponding α-hydroxy ketones under basic aqueous conditions, a novel transformation, was studied. The investigation revealed that the reaction is only possible with α-nitro ketones that are CH-acidic in the α′-position and readily deprotonated under the reaction conditions. The NO2/OH exchange was established to proceed with retention of configuration at the
研究了碱性条件下α-硝基酮与相应的α-羟基酮的反应,这是一种新型的转化反应。研究表明,只有在α'-位为CH酸性且在反应条件下易于去质子化的α-硝基酮才可能发生反应。建立NO 2 / OH交换可继续保持立体异构中心的构型,并且标记实验表明,OH O原子在很大程度上源自溶剂。特别是,反应的立体化学过程和外部亲核试剂的引入使我们提出了一种涉及邻基团参与的机制。用双S N来解释产品的形成通过Favorskii样环丙烷酮中间体进行的图2的反应。