ChemInform Abstract: Synthesis and Chemical Reactions of New Phosphono‐Phosphino Substituted γ‐Thiapyrones.

Abstract

Synthesis and Chemical Reactions of New Phosphono-PhosphinoSubstituted γ-Thiapyrones.-The 1,3-dithietane-2,4-diylidenes (I) react with acylated acetonitriles to form γ-thiapyrones (III). Standard Boc-protection of (III) results in the reaction at the primary amino group and oxidative desulfurization leads to the γ-pyrones (VI). -(NEIDLEIN, R.; HAHN, D. U.; KRAMER, W.; KRIEGER, C.; Heterocycles 47 (1998) 1, 221-262; Pharm.-Chem. Inst., Ruprecht-Karls-Univ., D-69120 Heidelberg, Germany; EN)