200073-21-8Relevant academic research and scientific papers
Ring opening of (spiro[2.4]hepta-4,6-diene)tricarbonyliron: A revisit
Fu, Yuan-Te,Chao, Pei-Chi,Liu, Ling-Kang
, p. 221 - 226 (1998)
(Spiro[2.4]hepta-4,6-diene)tricarbonyliron (2) self-converts to the tethered acyl complex (CO)2FeC(O)CH2CH2(η5-C 5H4) (3) when refluxed for 1 h in common organic solvents. The reaction of 2 with an external electrophile (CPh3+, H+) opens the three-membered ring, resulting in the cation (η5-C5H4CH2CH 2R)Fe(CO)3+ whose structure was determined by spectroscopic methods and confirmed by X-ray analysis of the PPh3 derivative (η5-C5H4CH2CH 3)Fe(CO)2(PPh3)+. The reaction of 3 with a strong electrophile (CPh3+, Me+) affords the rotationally restricted Fe-(alkoxy)carbene cation (CO)2Fe=C(OR)CH2CH2(η5-C 5H4)+, which can be converted to the Fe-(anilino)carbene cation (CO)2Fe=C(NHPh)CH2CH2(η5-C 5H4)+.
