Formation of Tertiary 3-Nitro Allylic Alcohol by Condensation of 2-Chloroiso- butyrophenone with Nitromethanide Anion: Estimation of Gibbs Free Enthalpies of Reaction in Solution for the Reaction Mechanism [1]
作者:Francisco Ros、Inmaculada Barbero
DOI:10.1007/s00706-005-0340-9
日期:2005.9
The reaction of 2-chloroisobutyrophenones and nitromethanide anion gives stereoselectively ( E )-3-nitro allylic alcohols. The Gibbs free enthalpies of reaction in DMSO for carbanion addition, epoxide formation, and rearrangement to 3-nitro allylic alcohol, as elementary steps for the reaction, were estimated from corresponding neutral gas reactions and using a thermodynamical approach to the transfer
2-氯异丁苯酮与硝基甲烷阴离子的反应生成立体选择性的( E )-3-硝基烯丙基醇。的 吉布斯 在反应的自由焓 DMSO 为碳负离子加成重排,环氧化物的形成,和向3-硝基烯丙基醇,作为用于该反应的基本步骤,分别从相应的中性气体的反应和使用热力学方法气态化合物转移到估计 二甲基亚砜 。在 吉布斯 的基础上制定 了分配液体化合物对 DMSO 的亲和力标志的标准 液化焓。有关步骤的反应速率和热力学可行性的信息表明,碳负离子的添加是速率确定的步骤。