Scheme 3.
Temperature‐controlled Suzuki–Miyaura coupling. A) Evolution of heating devices in temperature‐controlled mechanochemistry from heat gun to PID‐controlled jar heater. B) Schematic and pictorial overview of the prototyped jar heater. C) Results from different heating protocols on subset of compounds. D) Fine‐tuning of heating profile for the Suzuki–Miyaura cross‐coupling. a Jar temperature produced by latent heat of milling after 30 minutes reaction time. b Conditions as per top left of scheme – numbers given are calculated via 1H NMR analysis of the crude reaction mixture against mesitylene as an internal standard.