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Acceleration of Suzuki–Miyaura‐ and Stille‐type Coupling Reactions by Irradiation with Near‐UV‐A Light
Author(s) -
Imperato Giovanni,
König Burkhard
Publication year - 2008
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200800187
Subject(s) - stille reaction , irradiation , acceleration , chemistry , coupling (piping) , photochemistry , materials science , catalysis , physics , organic chemistry , nuclear physics , classical mechanics , composite material
Irradiation of a palladium catalyst bearing UV‐A‐absorbing phosphine ligands with low‐intensity UV‐A light leads to higher conversions of reactants at lower temperatures and an increased selectivity towards the cross‐coupling product in Suzuki–Miyaura‐ and Stille‐type reactions. The examples studied illustrate that a selective energy input into the catalyst by irradiation leads to more selective conversions under milder reaction conditions. With the availability of affordable and energy‐efficient UV‐A LED light sources, selective heating of the catalyst by light can be envisaged as a general strategy to increase the performance of a catalyst.