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Alkenylcarbene ruthenium arene complexes as initiators of alkene metathesis: An enyne creates a catalyst that promotes its selective transformation
Castarlenas, Ricardo,Eckert, Matthieu,Dixneuf, Pierre H.
, p. 2576 - 2579 (2007/10/03)
(Chemical Equation Presented) A molecule makes its own catalyst: [RuCl(arene)(PCy3)]OTf (e.g. 1) with allyl or propyl propargyl ethers gives alkenylcarbene derivatives 2 by a metallo-retroene reaction. The latter species are efficient initiators for catalytic ring-closing metathesis of allyl propargyl ethers into alkenylcycloalkenes and of dienes into cyclic alkenes (see scheme).
