A practical method for heterogeneously-catalyzed Mizoroki–Heck reaction: Flow system with adjustment of microwave resonance as an energy source

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...

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Bibliographic Details
Published in:Tetrahedron 2018-04, Vol.74 (15), p.1810-1816
Main Authors: Ichikawa, Tomohiro, Mizuno, Masahiro, Ueda, Shun, Ohneda, Noriyuki, Odajima, Hiromichi, Sawama, Yoshinari, Monguchi, Yasunari, Sajiki, Hironao
Format: Article
Language:English
Subjects:
Heck reaction
Heterogeneous catalysis
Microwave chemistry
Palladium
Polymers
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Summary: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 be sufficiently heated even with a low intensity of microwave irradiation in a 7% Pd/WA30-packed, glass tube-shaped catalyst cartridge, which was designed based on the electric permittivity of the solvents. The catalyst cartridge can be continuously reused at least 5 runs without exchange. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2018.02.044