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Paper | Regular issue | Vol 32, No. 2, 1991, pp.253-259
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5593
Reaction Mechanism and Structure of New Heterocycles via 1,4-Dipolar Cycloaddition of Imidazo[2,1-b]thiazolium-betaine

Kyung Ho Yoo, Dong Jin Kim, Dong Chan Kim, and Sang Woo Park*

*Division of Chemistry, Korea Institute of Science and Technology, P.O.Box 131, Cheongryang, Seoul 130-650, Korea


New heterocycles, (12RS,13SR)- and (12SR,13SR)-12-benzoyl-2,4-dioxo-1,3,9-triphenyl-6,7-dihydro-12H-thiazino[3’,4’; 2,3]imidazo[1,2-a][1,3,5]triazines (4a and 4b), were synthesized via 1,4-dipolar cycloaddition from 5,6-dihydro-3-phenyl-7-[N-phenyl(carbamoyl)]imidazo[2,1-b]thiazolium-betaine (2) by the treatment of phenacyl bomide.