Bulletin of the Chemical Society of Japan p. 3289 - 3295 (1991)
Update date:2022-08-02
Topics:
Kakehi, Akikazu
Ito, Suketaka
Sakurai, Tosio
Urushido, Kunio
Isawa, Hidetoshi
Enomoto, Manabu
Potassium 2-indolizinethiolates, generated in situ from the treatment of dialkyl 2-<(2-ethoxycarbonylethyl)thio>indolizine-1,3-dicarboxylates with potassium t-butoxide in N,N-dimethylformamide, reacted smoothly with various isothiocyanates and isocyanates with the elimination of alkoxide ions to give new heterocyclic compounds, alkyl 4(3H)-oxo-2-thioxo- and 2,4(3H)-dioxo-2H-1,3-thiazino<6,5-b>indolizine-10-carboxylates, in moderate to good yields.The structures of these 1,3-thiazino<6,5-b>indolizine derivatives were determined mainly by elemental analyses and spectral inspections, and the structural assignment was finally confirmed by the single crystal X-ray analyses of two compounds.
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Doi:10.1016/0040-4039(91)85052-7
(1991)Doi:10.1248/cpb.39.2647
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(1991)