Rhodium-catalyzed tandem cyclization-cycloaddition reactions of enynebenzaldehydes: construction of polycyclic ring systems.
o-(1,6-Enynyl)benzaldehydes underwent a novel mode of cycloaddition using Rh(I)-precatalyst, via[3+2] cycloaddition of presumed dipolar carbonyl ylide intermediate generated by Rh-catalyst and the utility of this mechanistically intriguing enyne cyclization can be found in a number of polycyclic natural product skeletons.
Shin
Seunghoon
S
Department of Chemistry, Hanyang University, Seoul, 133-791, South Korea.
Gupta
Arun Kumar
AK
Rhim
Chul Yun
CY
Oh
Chang Ho
CH