A convenient synthesis of five- and seven-membered heterocycles by rhodium(II)-catalyzed [3+2] and [3+4] cycloaddition of diazodicarbonyl compounds

ORGN 88

Yong Rok Lee, yrlee@yu.ac.kr, School of Chemical Engineering and Technology, Yeungnam University, 214-1, Dae-dong, Kyongsan, 712-749, South Korea
Rhodium(II)-catalyzed reactions of diazodicarbonyl compounds with a variety of conjugated dienes have been examined. These reactions provide a simple and rapid route to 5- and 7-membered heterocycles such as dihydrofurans and dihydrooxepines with a variety of substituents on the ring. The formation of these products has been also interpreted in terms of a step-wise mechanism.
 

Heterocycles, Aromatics, Materials, Devices, Switches, Combinatorial Chemistry, Metal-Mediated Reactions
8:00 PM-10:00 PM, Sunday, 13 March 2005 Convention Center -- Hall D, Poster

Division of Organic Chemistry

The 229th ACS National Meeting, in San Diego, CA, March 13-17, 2005