(1,5-Cyclooctadiene)(cyclopentadienyl)cobalt(I)

Air‐Stable {(C5H5)Co} Catalysts for [2+2+2] Cycloadditions

“…Conversely, [CpCo(C 2 H 4 ) 2 ], which is also employed frequently, is active at room temperature or lower. [5] However, these very efficient catalysts are all very sensitive to air [6,7] and require the use of distilled and thoroughly degassed solvents. We describe herein the synthesis of new easy-to-handle air-stable complexes of the type [CpCo(CO)(alkene)] [8] that catalyze various of [2+2+2] cycloadditions in unpurified solvents.…”