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Report | Regular issue | Vol 20, No. 4, 1983, pp.647-651
Published online, 1st January, 1970
DOI: 10.3987/R-1983-04-0647
Regio- and Periselective Cycloaddition Reactions of a Biperifunctional Compound, 1,3,6-Triphenylimidazo[1,2-c]thiaIVzole

Otohiko Tsuge, Shuji Kanemasa, and Takayoshi Hamamoto

*Research Institute of Industrial Science, Faculty of Engineering, Kyushu University, 6-1, Kasuga-koen, Kasuga 816-8580, Japan


In the cycloaddition reactions of a biperifunctional compound, 1,3,6-triphenylimidazo[1,2-c]thiaIVzole, to a variety of unsymmetrically substituted olefinic dipolarophiles, one of the two peripheral thiocarbonyl ylides has exclusively contributed affording good yields of the regioselective [3 + 2] cycloadducts.