An unusually facile diels-alder reaction with novel 6-alkylthio derivatives of 1,2,4-triazine
作者:Edward C. Taylor、John E. Macor
DOI:10.1016/s0040-4039(00)94841-x
日期:1985.1
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 with an inverse electron-demand Diels-Alder reaction.