The application of stop-flow microwave technology to scaling-out SNAr reactions using a soluble organic base
作者:Jameel A. Marafie、Jonathan D. Moseley
DOI:10.1039/b926537f
日期:——
A model SNAr reaction which gives a range of substituted diaryl ethers has been re-developed to function with the soluble organic base DBU in the place of insoluble potassium carbonate. Manufacture of these diaryl ethers has then been achieved by scaling-out in an automated stop-flow microwave reactor to give productivities of >0.5 kg per day. Analogous reaction partners have also been scaled up in
已开发了一种S N Ar模型反应,该反应给出了一系列取代的二芳基醚,可与可溶性有机碱DBU代替不溶的碳酸钾一起发挥作用。然后,通过在自动停止流微波反应器中按比例放大生产这些二芳基醚,以实现每天> 0.5 kg的生产率。在该反应器中也已扩大了类似的反应伙伴,以扩大研究范围。还对放大的间歇式微波反应器进行了简要比较。最后,据报道,该小型微波停止流反应器连续处理24小时,启动后无需人工干预。
Translation of microwave methodology to continuous flow for the efficient synthesis of diaryl ethers via a base-mediated S<sub>N</sub>Ar reaction
作者:Charlotte Wiles、Paul Watts
DOI:10.3762/bjoc.7.160
日期:——
for rapid reaction screening, a microwave-absorbing solvent is often required in order to achieve efficient reactant heating. In comparison, microreactors can be readily heated and pressurised in order to "super-heat" the reaction mixture, meaning that microwave-transparent solvents can also be employed. To demonstrate the advantages associated with microreaction technology a series of S(N)Ar reactions