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Synthesis of a configurationally stable three-legged piano-stool complex
Auteur(s)
Ward, Thomas R.
Date de parution
1999
In
Angew. Chem., Int. Ed.
Vol.
3
No
38
De la page
405
A la page
408
Résumé
Nucleophilic substitution of 3,5-bis(trifluoromethyl)pyrazole with 3-bromobenzyl bromide followed by a Stille vinylation and a radical addn. of HPPh2 on the resulting double bond affords the donor ligand in 79% overall yield. Coordination of phosphine from donor ligand to [{(?6-C6H5CO2Et)RuCl2}2] and subsequent thermal displacement of the arene ligand affords ruthenium arene phosphine complexes (R)-I and (S)-I. Treating I with excess of AgOSO2CF3 in THF affords title complexes II as a mixt. of (RRu,S) and (SRu,R) diastereomers. The crystal structure of (S)-I and II were detd. [on SciFinder(R)]
Identifiants
Type de publication
journal article
