C 2955 (OTTO) 4-Chlorophenylboronic acid, 98% Cas 1679-18-1 - used for palladium-catalyzed direct arylation, cyclopalladation, tandem-type Pd(II)-catalyzed oxidative Heck reaction and intramolecular C-H amidation, copper-mediated ligandless aerobic fluoroalkylation, Pd-catalyzed arylative cyclization, ruthenium catalyzed direct arylation, ligand-free copper-catalyzed coupling reactions and regioselective arylation and alkynylation by Suzuki-Miyaura and Sonogashira cross-coupling reactions.