AN UNUSUALLY FACILE DIELS-ALDER REACTION WITH NOVEL 6-ALKYLTHIO DERIVATIVES OF 1,2,4-TRIAZINE

Article abstract of DOI:10.1016/S0040-4039(00)94841-X

Treatment of a series of 6-alkylthio-, 6-alkylsulfinyl and 6-alkylsulfonyl-1,2,4-triazines with 1-pyrrolidinocyclopentene yields 3,4-cyclopentenopyridines.The observed rates of these cycloaddition reactions (sulfide < sulfoxide < sulfoxide) are consistent