Achieving catalyst-free Ullmann couplings under mild conditions is crucial to extending the scope of traditional carbon-carbon and carbon-heteroatom couplings. Here, the authors show that Ullmann couplings can be effectively achieved at room temperature without the need for metal catalysts in MeOH/H2O microdroplets.
- Ming-Yang Jia
- Yue-Wen Zhou
- Zhen-Feng Cai