Iridium(I)-Catalyzed Coupling of (Z)-2-En-4-yn-1-ols with Activated Alkynes: A New Synthetic Route to 7-Oxanorbornadienes
作者:Alba E. Díaz-Álvarez、Pascale Crochet、Victorio Cadierno
DOI:10.1002/adsc.201000408
日期:2010.10.4
Taking advantage of the ability shown by the iridium(I) dimer [Ir(μ-Cl)(COD)}2] to promote the cycloisomerization of (Z)-enynols into furans, an unprecedented syntheticroute to 7-oxanorbornadienes has been developed just by performing the catalytic reactions in the presence of activatedalkynes. The process, which proceeds under solvent-free conditions, furnishes the bicyclic alkenes in good yields
Chemistry by Nanocatalysis: First Example of a Solid-Supported RAPTA Complex for Organic Reactions in Aqueous Medium
作者:Sergio E. García-Garrido、Javier Francos、Victorio Cadierno、Jean-Marie Basset、Vivek Polshettiwar
DOI:10.1002/cssc.201000280
日期:2011.1.17
A ruthenium–arene–PTA (RAPTA) complex has been supported for the first time on an inorganic solid, that is, silica‐coated ferrite nanoparticles. The resulting magnetic material proved to be a general, very efficient and easily reusable catalyst for three synthetically useful organic transformations; selective nitrile hydration, redox isomerization of allylic alcohols, and heteroannulation of (Z)‐enynols
Novel ruthenium-catalysed synthesis of furan derivatives via intramolecular cyclization of hydroxy enynes
作者:B�n�dicte Seiller、Christian Bruneau、Pierre H. Dixneuf
DOI:10.1039/c39940000493
日期:——
Furans containing a functional group at C(5) are obtained under neutral conditions by selective cyclization of (Z)-pent-2-en-4-yn-1-ols in the presence of RuCl2(PPh3)(p-cymene) as catalyst precursor.