申请人:Emonds Mark V. M.
公开号:US20130066115A1
公开(公告)日:2013-03-14
Methods for forming boronic acids, and intermediates thereof, are disclosed. The method may include mixing a 1-chloro-2-substituted-3-fluorobenzene starting material with an alkyllithium in a first reactor to form a reaction mixture. The 1-chloro-2-substituted-3-fluorobenzene starting material may react with the alkyllithium to form a lithiated intermediate. The reaction mixture may be continuously transferred to a second reactor and a borate may be continuously introduced to form a boronate. The boronic acids may be formed by treating the boronate with aqueous potassium hydroxide followed by acidification. Such methods may provide continuous formation of the boronic acids and may reduce an amount of a reactive intermediate present during processing as well as cycle times. Systems for forming the boronic acids are also disclosed.
公开了形成硼酸及其中间体的方法。该方法可以包括将1-氯-2-取代-3-氟苯起始物与烷基锂混合在第一反应器中形成反应混合物。1-氯-2-取代-3-氟苯起始物可以与烷基锂反应形成锂中间体。反应混合物可以连续转移至第二个反应器,并连续引入硼酸盐以形成硼酸酯。硼酸可以通过用水合氢氧化钾处理硼酸酯后酸化来形成。这些方法可以提供硼酸的连续形成,并可以减少处理过程中存在的反应中间体的数量以及循环时间。公开了形成硼酸的系统。