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티아졸로[3,2-a][1,3]디아제핀-베타인의 고리변환 반응
박미선,서명은,유경호,박상우 梨花女子大學校 藥學硏究所 1993 藥學硏究論文集 Vol.- No.3
3-Phenyl-5,6,7,8-tetrahydrothiazolo[3,2-α][1,3] diazepine, which has pharmaceutical activities, was reacted with phenyl isothiocyanate to give 3-phenyl-9-phenyl(thiocarbamoyl)-5,6,7,8-tet-rahydrothiazolo[3,2-α][1,3]diazepinium-betaine. New biheterocyclic compounds were prepared by the ring transformation reaction of the above reactive betaine with α-haloesters and α-haloketones such as ethyl bromoacetate, methyl bromoacetate, chloroacetone, and 4′-methoxyphenacyl bromide, respectively, In each ring transformation reaction, two major products supposed to be geometrical isomers were obtained.
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