Conclusions
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1.
Syntheses are reported for the first mesionic compounds with a carbon-transition metal σ-bond, namely, σ-sidnonyl-η-cyclopentadienyldicarbonyliron.
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2.
The capacity of sidnones with a C-Fe bound to undergo cycloaddition with the dimethyl ester of acetylenedicarboxylic acid to give σ-pyrazolyl-η-cyclopentadienyldicarbonyliron was demonstrated.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 883–885, April, 1988.
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Kalinin, V.N., Min, S.F. Synthesis of σ-sidnonyl and σ-pyrazolyl-η-cyclopentadienyldicarbonyliron. Russ Chem Bull 37, 762–764 (1988). https://doi.org/10.1007/BF01455497
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DOI: https://doi.org/10.1007/BF01455497