Iridium Complex‐Catalyzed Intramolecular Ene‐Type Reaction of 1,6‐Enynes Accelerated in Ionic Liquid.

Abstract

2005 Furan derivatives R 0060Iridium Complex-Catalyzed Intramolecular Ene-Type Reaction of 1,6-Enynes Accelerated in Ionic Liquid. -The title reaction of (E)-configurated substrates represents the first example of transition metal catalyzed cycloisomerization in ionic liquid. It proceeds faster and affords the products in higher yields compared to toluene.-(SHIBATA*, T.; YAMASAKI, M.; KADOWAKI, S.; TAKAGI, K.; Synlett 2004, 15, 2812-2814; Dep. Chem., Sch. Sci. Eng., Waseda Univ., Shinjuku, Tokyo 169, Japan; Eng.) -Steudel 20-102