Stepwise Displacement of the Tertiary Phosphine Ligand in Square-Planar [PdR2L2]-Type Complexes by Organolithium Reagents with Stereochemical Retention Affording Organopalladate Complexes

Organometallics

Volumn 2, Issue 2, 1983, Pages 241-250

  Nakazawa, Hiroshi ^a   Ozawa, Fumiyuki ^a   Yamamoto, Akio ^a  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0006740324     PISSN: 02767333     EISSN: 15206041     Source Type: Journal    
DOI: 10.1021/om00074a007     Document Type: Article

References (18)

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2. (a) Posner, G. H. “An Introduction to Synthesis Using Organo-copper Reagents”; Wiley-Interscience: New York, 1980. (b) Jonas, K. Ado. Organomet. Chem. 1981, 19, 97.
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13. Although a five-coordinate intermediate Li[PdMe3L2] was proposed in our previous paper for the conversion of [PdR2L2] to Li[PdR3L] during the trans-cis isomerization of [PdMe2L2] promoted by MeLi, 7 the present study makes the associative mechanism unlikely, although the displacement of R in Li[PdR3L] by L to convert it into [PdR2L2] may well proceed by an associative mechanism.
14. Ham, N. S.; Mole, T. In “Progress in Nuclear Magnetic Resonance Spectroscopy”; Emsley, J. W., Feeney, F., Sutcliffe, L. H., Ed.; Pergamon Press: New York, 1969; Vol. 4, p. 101.
15. Narashimhan, P. T.; Rogers, M. T. J. Chem. Soc., Dalton Trans. 1960, 5983.
16. Because the both complexes have the ethyl groups in mutually trans positions, the trans influence of the ethyl groups may be cancelled and may not affect the following reasoning.
17. Clark, H. C.; Ward, J. E. J. Am. Chem. Soc. 1974, 96, 1741.
18. Calvin, G.; Coates, G. E. J. Chem. Soc. 1960, 2008.