A ruthenium-based catalytic system with switchable selectivity between cyclotrimerization and enyne metathesis/Diels-Alder reactions of terminal alkynes

Karabulut S. , SARIASLAN B., ÖZTÜRK B. Ö.

CATALYSIS COMMUNICATIONS, cilt.41, ss.12-16, 2013 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.catcom.2013.06.023
  • Sayfa Sayıları: ss.12-16


In this study, we report a practical catalytic system, [RuCl2( p-cymene)](2)/IPr (IPr: 1,3-bis(2,6 diisopropylphenyl) imidazol-2-ylidene), that can switch between cyclotrimerization and cross enyne metathesis. The cyclotrimerization reaction of phenylacetylene catalyzed by [RuCl2(p-cymene)](2) can be switched to enyne metathesis by the introduction of a sterically hindered N-heterocyclic carbene. The 1,3-diene formed during this reaction reacts with dienophiles to form the Diels-Alder adduct. A practical one-pot synthesis method, utilizing enyne metathesis/Diels-Alder reactions, was used to construct cyclic compounds in an efficient manner. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.