Rapid Vortex Fluidics: Continuous Flow Synthesis of Amides and Local Anesthetic Lidocaine
作者:Joshua Britton、Justin M. Chalker、Colin L. Raston
DOI:10.1002/chem.201501785
日期:2015.7.20
on multigram scales. Amide synthesis under flow was also extended to a total synthesis of local anesthetic lidocaine, with sequential reactions carried out in two serially linked VFD units. The synthesis could also be executed in a single VFD, in which the tandem reactions involve reagent delivery at different positions along the rapidly rotating tube with in situ solvent replacement, as a molecular
使用涡流装置(VFD)进行的薄膜流动化学可有效地在剪切作用下对胺进行可扩展的酰化反应,相对于传统的批处理技术,酰胺的收率得到了显着提高。优化的单相流动条件在室温下≤80秒内有效,从而能够以克数形式获得结构多样的酰胺,官能化氨基酸和取代脲。在两个连续连接的VFD单元中进行顺序反应的同时,流动条件下的酰胺合成也扩展为局部麻醉利多卡因的总合成。合成也可以在单个VFD中执行,其中串联反应涉及沿分子快速流转管在不同位置进行试剂输送,并进行原位溶剂置换,这是分子组装生产线工艺。对甲氧基苄胺