Heterocyclic Ketenethioacetal Derivatives. IX. Reactions of 1-[2, 2-Bis (methylthio) vinyl] pyridinium Iodides with Active Methylene Compounds

YOSHINORI TOMINAGA; HIROSHI FUJITO; KAZUMICHI MIZUYAMA; YOSHIRO MATSUDA; GORO KOBAYASHI

doi:10.1248/cpb.25.1519

YOSHINORI TOMINAGA, HIROSHI FUJITO, KAZUMICHI MIZUYAMA, YOSHIRO MATSUDA, GORO KOBAYASHI

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Keywords: indolizine ketenethioacetal

JOURNAL FREE ACCESS

1977 Volume 25 Issue 7 Pages 1519-1527

DOI https://doi.org/10.1248/cpb.25.1519

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Abstract

The reaction of 1-[2, 2-bis (methylthio) vinyl] pyridinium iodide derivatives (1a-k) with active methylene compounds in the presence of a base in ethanol, dimethylformamide, or dimethyl sulfoxide gave pyridinium allylide, indolizine, and N-[2, 2-bis (methylthio) -vinyl]-N-(6, 6-disubstituted 1, 3, 5-hexatrienyl) amine derivatives.

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