Michael addition to α,β-unsaturated arene ruthenium(II) cyclopentadiene complexes: endo nucleophilic addition

Abstract

Certain carbon and sulfur nucleophiles add to the β-terminus of the styrene system in α,β-unsaturated arene ruthenium(II) cyclopentadiene complexes, and unexpected endo addition occurs preferentially in some cases.

References

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12. Semmelhack presents evidence of a mobile equilibrium between I and II. The example of ref. 5(b) is complicated by the α,β-unsaturation being –N = CHPh.
13. An X-ray structure of the major component of product 4 has been obtained.
14. Molecular orbital and predictive results were obtained using M. C. Zerner's ZINDO program (version 3.0) from CAChe Scientific. Atomic coordinates were first optimized using molecular mechanics (augmented CAChe MM2 force field), and orbital energies calculated directly using the INDO 1 basis set. Self-consistent field molecular orbital energies were obtained in the restricted Hartree–Fock level within 4 Å self-consistent reaction field (SCRF) cavity with the relative permittivity and refractive index of water.