139583-37-2Relevant articles and documents
Reactions between iron(0) alkynylcarbene complexes and cyclopentadiene: Formation of iron(0) η1-vinylcarbene complexes and their facile thermal transformation into the corresponding (η3:η1-allylacyl)iron(II) complexes
Park, Jaiwook,Kang, Sunhwa,Whang, Dongmok,Kim, Kimoon
, p. 1738 - 1741 (2008/10/08)
[(3-tert-Butylnorbornadienyl)ethoxymethylene]Fe(CO)4, the iron(0) η1-vinylcarbene complex 2, is obtained from the reaction of [(3,3-dimethylbutynyl)ethoxymethylene]Fe(CO)4 (1a) with cyclopentadiene at 25°C. Complex 2 transforms into the η3:η1-allylacyl complex 4a via a CO insertion reaction at the original carbene carbon by heating at 50°C for 1 h. However, direct formation of η3:η1-allylacyl complexes is observed in reactions of cyclopentadiene with other alkynylcarbene complexes, 1b (R = SiMe3), 1c (R = cyclohexyl), 1d (R = n-propyl), and 1e (R = phenyl), at 25°C.