Improving Robustness: In Situ Generation of a Pd(0) Catalyst for the Cyanation of Aryl Bromides.
John R CoombsKenneth J FraunhofferEric M SimmonsJason M StevensSteven R WisniewskiMiao YuPublished in: The Journal of organic chemistry (2017)
Conditions have been developed for the palladium-catalyzed cyanation of aryl bromides utilizing the air-stable XantPhos-PdCl2 precatalyst. By employing a trialkylamine as a reducing agent, the active Pd(0) species is generated in situ, alleviating the need to employ the air-sensitive Pd2(dba)3. Twenty-two substituted benzonitriles have been synthesized using this method.