The synthesis of 2H-Thiopyranes from β-Thiooxoaldehydes

Article abstract of DOI:10.1055/s-1987-33432

<4+2>-Cycloaddition reactions between enaminothioketones and activated alkenes, which are described by Quiniou et. al., usually require relatively harsh reaction conditions, and produce the title compounds only in moderate yields.Much better results can b