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Synthesis 1988; 1988(3): 261-262
DOI: 10.1055/s-1988-27539
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5-Substituted 6-Amino-2,3-dihydroimidazo[2,1-b]thiazoles and 2-Amino-5,6-dihydrothiazolo[3,2-b]-1,2,4-triazole

Chuzo Lwata* , Mayumi Watanabe, Shigeha Okamoto, Michitaro Fujimoto, Masatoshi Sakae, Masanori Katsurada, Takeshi Imanishi
  • *Faculty of Pharmaceutical Sciences, Osaka University, Yamadaoka, Suita, Osaka 565, Japan
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Publikationsdatum:
20. August 2002 (online)

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Reaction of 2-(cyanoimino)thiazolidine with various alkyl halides under basic conditions affords 3-alkylated products, which are treated with sodium ethoxide in ethanol to give 5-substitued 6-amino-2,3- dihydroimidazo[2,1-b]thiazoles. 2-Amino-5,6-dihydrothiazolo[3,2-b]- 1,2,4-triazole is similarly prepared by treatment of 2-(cyanoimino) thiazolidine with O-(2,4-dinitrophenyl)hydroxylamine.