Najera Catalyst II (CAS# 419581-64-9) is an organometallic catalyst used for various cross-couplings reactions such as the Heck-Matsuda reaction of arenediazonium salts and the Suzuki-Miyaura cross-coupling reaction of aryl bromides. Najera Catalyst II has also been used in the catalytic rearrangement and dehydration of aldoximes.