Kadyrov R, Rosiak A. Synthesis of Ru alkylidene complexes.
Beilstein J Org Chem 2011;
7:104-10. [PMID:
21286400 PMCID:
PMC3028570 DOI:
10.3762/bjoc.7.14]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 11/16/2010] [Indexed: 11/23/2022] Open
Abstract
The present work describes the robust synthesis of Ru alkylidene complexes (PCy(3))(2)Cl(2)Ru=CHR - precursors for metathesis catalysts. Moreover, the dynamic behavior of complexes where R = 2-naphthyl and 2-thienyl was studied. (1)H NMR techniques were employed to establish the preferred conformations in solution for both complexes and the energy barrier for rotation around single (Ru=)CH-C(thienyl) bond was estimated (ΔG(≠) (303K) = 12.6 kcal/mol).
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