Click chemistry; diene, enyne, diynes; C-H amination; allenylboronic acid picanol ester; ketone and aldehyde a-oxygenation; Buchwald ligands for C-N coupling; heteroatom formylation; mild Mg-halogen exchange; and nucleophilic trifluoromethylation From Sigma-Aldrich ChemFile 2007, vol 7, no. 1Â