Ruthenium-catalyzed ring-closing metathesis accelerated by long-range steric effect

T Fujihara, Y Tomike, T Ohtake, J Terao…

Index: Fujihara, Tetsuaki; Tomike, Yoshikazu; Ohtake, Toshiyuki; Terao, Jun; Tsuji, Yasushi Chemical Communications, 2011 , vol. 47, # 34 p. 9699 - 9701

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Citation Number: 12

Abstract

Ruthenium-based metathesis catalysts with a N-heterocyclic carbene ligand bearing 2, 3, 4, 5-tetraphenylphenyl moieties (1-TPPh and 1-TPPh*) are developed. The highly active catalyst system has been realized in THF by the combination of 1-TPPh* and CuCl as a phosphine scavenger.