A practical method for heterogeneously-catalyzed Mizoroki–Heck reaction: Flow system with adjustment of microwave resonance as an energy source
作者:Tomohiro Ichikawa、Masahiro Mizuno、Shun Ueda、Noriyuki Ohneda、Hiromichi Odajima、Yoshinari Sawama、Yasunari Monguchi、Hironao Sajiki
DOI:10.1016/j.tet.2018.02.044
日期:2018.4
The microwave-assisted and continuous-flow Mizoroki–Heck reaction using a heterogeneous palladium catalyst supported on the anion-exchange resin DIAION WA30 (7% Pd/WA30) is described. The microwave resonance is finely adjusted to 2.4 GHz according to the electric permittivity of the reaction medium for efficient heating. Organic solvents, such as acetonitrile, N,N-dimethylacetamide, and toluene, can
描述了使用负载在阴离子交换树脂DIAION WA30(7%Pd / WA30)上的多相钯催化剂进行的微波辅助连续流Mizoroki-Heck反应。为了有效地加热,根据反应介质的介电常数将微波共振微调至2.4 GHz。乙腈,N,N-二甲基乙酰胺和甲苯等有机溶剂即使在微波辐射强度较低的情况下,也可以在装有7%Pd / WA30的玻璃管形催化剂盒中充分加热,该催化剂盒基于溶剂的介电常数。催化剂盒可以连续重复使用至少5次,而无需更换。