Au(I)-catalyzed cyclization of enynes bearing an olefinic cycle.
Gold(I)-catalyzed cyclization of enynes containing an olefinic cycle has been studied. The introduction of an olefinic ring instead of a terminal alkene in enynes dramatically increased the yield of the reaction. Enynes having an olefinic cycle were prepared by a rhodium-catalyzed intermolecular [4 + 2] cycloaddition of diynes with butadiene. Consecutive rhodium-catalyzed Diels-Alder/gold(I)-catalyzed cycloisomerization reactions were integrated in a one-pot reaction.
Lee
Sang Ick
SI
Intelligent Textile System Research Center, Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea.
Kim
Soo Min
SM
Choi
Mi Ra
MR
Kim
Sun Young
SY
Chung
Young Keun
YK
Han
Won-Sik
WS
Kang
Sang Ook
SO