Decomposition of donor-acceptor diazo compounds leads to the formation reactive carbene intermediates. These can undergo a wide variety transfer reactions yield synthetically useful products. Herein, we report selective borane catalyzed cyclization reaction from combination two different afford N-substituted pyrazoles. The decomposition more α-aryl α-diazoester and subsequent with vinyl diazoac...

Abstract The palladium-catalysed Suzuki–Miyaura cross-coupling reaction of organohalides and organoborons is a reliable method for carbon–carbon bond formation. This involves base-mediated transmetalation process, but the presence base also promotes competitive protodeborylation. Herein, we established via Lewis acid-mediated an organopalladium(II) intermediate with organoborons. Experimental t...