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2005
Metathesis reactions
O 0286
Alkenylcarbene Ruthenium Arene Complexes as Initiators of Alkene Metathesis:
Enyne Creates a Catalyst that Promotes Its Selective Transformation. — Alk34- 064 An
ene metathesis in the presence of Ru-complex (I) is found to be only successful, if the
substrate contains an additional terminal alkyne [cf. (III) versus (V)]. Thus, various
complexes of type (II) are prepared in situ from (I) and terminal alkynes and tested for
their catalytic activity. The best results are obtained with the species (IIa). —
(CASTARLENAS, R.; ECKERT, M.; DIXNEUF*, P. H.; Angew. Chem., Int. Ed. 44
(2005) 17, 2576-2579; Inst. Chim., CNRS, Univ. Rennes, F-35042 Rennes, Fr.; Eng.)
— Lindner
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