TY - JOUR
T1 - The mechanism of pericyclic organometallic reactions. Competitive [4,4]-sigmahaptotropic rearrangement versus metal-hydride shift
AU - Goldschmidt, Zeev
AU - Genizi, Elisheva
AU - Gottlieb, H. E.
PY - 1989/6/13
Y1 - 1989/6/13
N2 - The anti-2-2H labeled 3+2 adduct of tricarbonyl(η4-cycloheptatriene)iron and tetracyanoethylene undergoes a thermal rearrangement to the 6 + 2 isomeric complex, exclusively labeled at the anti position of the methylene group. Rate studies reveal no kinetic isotope effect. These observations exclude a hydrogen transfer mechanism, and suggest a pericyclic [4,4]-sigmahaptotropic (ση) rearrangement.
AB - The anti-2-2H labeled 3+2 adduct of tricarbonyl(η4-cycloheptatriene)iron and tetracyanoethylene undergoes a thermal rearrangement to the 6 + 2 isomeric complex, exclusively labeled at the anti position of the methylene group. Rate studies reveal no kinetic isotope effect. These observations exclude a hydrogen transfer mechanism, and suggest a pericyclic [4,4]-sigmahaptotropic (ση) rearrangement.
UR - http://www.scopus.com/inward/record.url?scp=0042158114&partnerID=8YFLogxK
U2 - 10.1016/0022-328x(89)85413-0
DO - 10.1016/0022-328x(89)85413-0
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AN - SCOPUS:0042158114
SN - 0022-328X
VL - 368
SP - 351
EP - 355
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 3
ER -